Lexus ES250 (2024 year). Manual in english - page 6

181

4-5. Using the driving support systems

4

Driving

• While steering into the direction of 

oncoming traffic

■

Situations in which the system may not 

operate properly

●

In some situations such as the following, 

an object may not be detected by the 

radar sensor and front camera, prevent-

ing the system from operating properly:

• When a detectable object is approaching 

your vehicle

• When your vehicle or a detectable object 

is wobbling

• If a detectable object makes an abrupt 

maneuver (such as sudden swerving, 

acceleration or deceleration)

• When your vehicle approaches a detect-

able object rapidly

• When a detectable object is not directly 

in front of your vehicle

• When a detectable object is near a wall, 

fence, guardrail, manhole cover, vehicle, 

steel plate on the road, etc.

• When a detectable object is under a 

structure

• When  part  of  a  detectable object is hid-

den by an object, such as large baggage, 

an umbrella, or guardrail

• When there are many things which can 

reflect the radio waves of the radar in the 

vicinity (tunnels, truss bridges, gravel 

roads, snow covered road that have 

tracks, etc.)

• When there is an effect on the radio 

waves to the radar that is installed on 

another vehicle

• When multiple detectable objects are 

close together

• If the sun or other light is shining directly 

on a detectable object

• When a detectable object is a shade of 

white and looks extremely bright

• When a detectable object appears to be 

nearly the same color or brightness as its 

surroundings

• If a detectable object cuts or suddenly 

emerges in front of your vehicle

• When the front of your vehicle is hit by 

water, snow, dust, etc.

• When a very bright light ahead, such as 

the sun or the headlights of oncoming 

traffic, shines directly into the front cam-

era

• When approaching the side or front of a 

vehicle ahead

• If a vehicle ahead is a motorcycle

• If a vehicle ahead is narrow, such as a 

personal mobility vehicle

• If a preceding vehicle has a small rear 

end, such as an unloaded truck

• If a preceding vehicle has a low rear end, 

such as a low bed trailer

• If a vehicle ahead has extremely high 

ground clearance

• If a vehicle ahead is carrying a load which 

protrudes past its rear bumper

• If a vehicle ahead is irregularly shaped, 

such as a tractor or side car

• If a vehicle ahead is a child sized bicycle, 

a bicycle that is carrying a large load, a 

182

4-5. Using the driving support systems

bicycle ridden by more than one person, 

or a uniquely shaped bicycle (bicycle with 

a child seat, tandem bicycle, etc.)

• If a pedestrian/or the riding height of a 

bicyclist ahead is shorter than approxi-

mately 3.2 ft. (1 m) or taller than approxi-

mately 6.5 ft. (2 m)

• If a pedestrian/bicyclist is wearing over-

sized clothing (a rain coat, long skirt, 

etc.), making their silhouette obscure

• If a pedestrian is bending forward or 

squatting or bicyclist is bending forward

• If a pedestrian/bicyclist is moving fast

• If a pedestrian is pushing a stroller, 

wheelchair, bicycle or other vehicle

• When driving in inclement weather such 

as heavy rain, fog, snow or a sandstorm

• When driving through steam or smoke

• When the surrounding area is dim, such 

as at dawn or dusk, or while at night or in 

a tunnel, making a detectable object 

appear to be nearly the same color as its 

surroundings

• When driving in a place where the sur-

rounding brightness changes suddenly, 

such as at the entrance or exit of a tunnel

• After the engine has started the vehicle 

has not been driven for a certain amount 

of time

• While making a left/right turn and for a 

few seconds after making a left/right turn

• While driving on a curve and for a few 

seconds after driving on a curve

• If your vehicle is skidding

• If the front of the vehicle is raised or low-

ered

• If the wheels are misaligned

• If a wiper blade is blocking the front cam-

era

• The vehicle is being driven at extremely 

high speeds

• When driving on a hill

• If the radar sensor or front camera is mis-

aligned

• When driving in a traffic lane separated 

by more than one lane where oncoming 

vehicles are driving while making a 

right/left turn

• When largely out of place with the oppo-

site facing targeted oncoming vehicle 

during a right/left turn

• While making a right/left turn, when a 

pedestrian approaches from behind or 

side of your vehicle

●

In addition to the above, in some situa-

tions, such as the following, the emer-

gency steering assist may not operate.

• When the white (yellow) lane lines are 

difficult to see, such as when they are 

faint, diverging/merging, or a shadow is 

cast upon them

• When  the  lane  is  wider or narrower than 

normal

• When there is a light and dark pattern on 

the road surface, such as due to road 

repairs

• When the target is too close

• When there is insufficient safe or unob-

structed space for the vehicle to be 

steered into

• If oncoming vehicle is present

• If VSC function is operating

●

In some situations such as the following, 

sufficient braking force or steering force 

may not be obtained, preventing the sys-

tem from performing properly:

• If the braking functions cannot operate to 

their full extent, such as when the brake 

183

4-5. Using the driving support systems

4

Driving

parts are extremely cold, extremely hot, 

or wet

• If the vehicle is not properly maintained 

(brakes or tires are excessively worn, 

improper tire inflation pressure, etc.)

• When the vehicle is being driven on a 

gravel road or other slippery surface

• When the road surface has deep wheel 

tracks

• When driving on a hill road

• When driving on a road that has inclines 

to the left or right

■

If VSC is disabled

●

If VSC is disabled (



P.245), the pre-

collision brake assist and pre-collision 

braking functions are also disabled.

●

The PCS warning light will turn on and 

“VSC Turned off Pre-Collision Brake 

System Unavailable” will be displayed on 

the multi-information display.

LTA (Lane Tracing Assist)

While driving on a road with clear 
white (yellow) lane lines, the LTA 
system warns the driver if the vehi-
cle may deviate from the current 
lane or course

*

, and also can 

slightly operate the steering wheel 
to help avoid deviation from the 
lane or course

*

. Also, while the 

dynamic radar cruise control with 
full-speed range (



P.195) is oper-

ating, this system will operate the 
steering wheel to maintain the vehi-
cle’s lane position.
The LTA system recognizes white 
(yellow) lane lines or a course

*

 

using the front camera. Addition-
ally, it detects preceding vehicles 
using the front camera and radar.

*

: Boundary between asphalt and the 

side of the road, such as grass, soil, or 
a curb

184

4-5. Using the driving support systems

WARNING

■

Before using LTA system

●

Do not rely solely upon the LTA sys-

tem. The LTA system does not auto-

matically drive the vehicle or reduce 

the amount of attention that must be 

paid to the area in front of the vehicle. 

The driver must always assume full 

responsibility for driving safely by pay-

ing careful attention to the surround-

ing conditions and operating the 

steering wheel to correct the path of 

the vehicle. Also, the driver must take 

adequate breaks when fatigued, such 

as from driving for a long period of 

time.

●

Failure to perform appropriate driving 

operations and pay careful attention 

may lead to an accident, resulting in 

death or serious injury.

■

Situations unsuitable for LTA system

In the following situations, use the LTA 

switch to turn the system off. Failure to do 

so may lead to an accident, resulting in 

death or serious injury.

●

Vehicle is driven on a road surface 

which is slippery due to rainy weather, 

fallen snow, freezing, etc.

●

Vehicle is driven on a snow-covered 

road.

●

White (yellow) lines are difficult to see 

due to rain, snow, fog, dust, etc.

●

Vehicle is driven in a temporary lane 

or restricted lane due to construction 

work.

●

Vehicle is driven in a construction 

zone.

●

A spare tire, tire chains, etc. are 

equipped.

●

When the tires have been excessively 

worn, or when the tire inflation pres-

sure is low.

●

During emergency towing

■

Preventing LTA system malfunctions 

and operations performed by mistake

●

Do not modify the headlights or place 

stickers, etc. on the surface of the 

lights.

●

Do not modify the suspension etc. If 

the suspension etc. needs to be 

replaced, contact your Lexus dealer.

●

Do not install or place anything on the 

hood or grille. Also, do not install a 

grille guard (bull bars, kangaroo bar, 

etc.).

●

If your windshield needs repairs, con-

tact your Lexus dealer.

■

Conditions in which functions may 

not operate properly

In the following situations, the functions 

may not operate properly and the vehi-

cle may depart from its lane. Drive safely 

by always paying careful attention to 

your surroundings and operate the 

steering wheel to correct the path of the 

vehicle without relying solely on the func-

tions.

●

When the follow-up cruising display is 

displayed (



P.188) and the preced-

ing vehicle changes lanes. (Your vehi-

cle may follow the preceding vehicle 

and also change lanes.)

●

When the follow-up cruising display is 

displayed (



P.188) and the preced-

ing vehicle is swaying. (Your vehicle 

may sway accordingly and depart from 

the lane.)

185

4-5. Using the driving support systems

4

Driving

WARNING

●

When the follow-up cruising display is 

displayed (



P.188) and the preced-

ing vehicle departs from its lane. (Your 

vehicle may follow the preceding vehi-

cle and depart from the lane.)

●

When the follow-up cruising display is 

displayed (



P.188) and the preced-

ing vehicle is being driven extremely 

close to the left/right lane line. (Your 

vehicle may follow the preceding vehi-

cle and depart from the lane.)

●

Vehicle is being driven around a sharp 

curve.

●

Objects or patterns that could be mis-

taken for white (yellow) lines are pres-

ent on the side of the road (guardrails, 

reflective poles, etc.).

●

Vehicle is driven where the road 

diverges, merges, etc.

●

Repair marks of asphalt, white (yellow) 

lines, etc. are present due to road 

repair.

●

There are shadows on the road that 

run parallel with, or cover, the white 

(yellow) lines.

●

The vehicle is driven in an area without 

white (yellow) lines, such as in front of 

a tollgate or checkpoint, or at an inter-

section, etc.

●

The white (yellow) lines are cracked, 

“Botts’ dots”, “Raised pavement 

marker” or stones are present.

●

The white (yellow) lines cannot be 

seen or are difficult to see due to sand, 

etc.

●

The vehicle is driven on a road surface 

that is wet due to rain, puddles, etc.

●

The traffic lines are yellow (which may 

be more difficult to recognize than 

lines that are white).

●

The white (yellow) lines cross over a 

curb, etc.

●

The vehicle is driven on a bright sur-

face, such as concrete.

●

If the edge of the road is not clear or 

straight.

●

The vehicle is driven on a surface that 

is bright due to reflected light, etc.

●

The vehicle is driven in an area where 

the brightness changes suddenly, such 

as at the entrances and exits of tunnels, 

etc.

186

4-5. Using the driving support systems

■

Lane departure alert function

When the system determines that the 
vehicle might depart from its lane or 
course

*

, a warning is displayed on the 

multi-information display, and either a 
warning buzzer will sound or the steer-
ing wheel will vibrate to alert the driver.

When the warning buzzer sounds or the 
steering wheel vibrates, check the area 
around your vehicle and carefully operate 
the steering wheel to move the vehicle 
back to the center of the lane.
When the system determines that the vehi-
cle might depart from its lane and that the 
possibility of a collision with an overtaking 
vehicle in the adjacent lane is high, the lane 
departure alert will operate even if the turn 
signals are operating.

*

: Boundary between asphalt and the side 

of the road, such as grass, soil, or a curb

WARNING

●

Light from the headlights of an oncom-

ing vehicle, the sun, etc. enters the 

camera.

●

The vehicle is driven on a slope.

●

The vehicle is driven on a road which 

tilts left or right, or a winding road.

●

The vehicle is driven on an unpaved or 

rough road.

●

The traffic lane is excessively narrow 

or wide.

●

The vehicle is extremely tilted due to 

carrying heavy luggage or having 

improper tire pressure.

●

The distance to the preceding vehicle 

is extremely short.

●

The vehicle is moving up and down a 

large amount due to road conditions 

during driving (poor roads or road 

seams).

●

When driving in a tunnel or at night 

with the headlights off or when a head-

light is dim due to its lens being dirty or 

it being misaligned.

●

The vehicle is struck by a crosswind.

●

The vehicle is affected by wind from a 

vehicle driven in a nearby lane.

●

The vehicle has just changed lanes or 

crossed an intersection.

●

Tires which differ by structure, manu-

facturer, brand or tread pattern are 

used.

●

When tires of a size other than speci-

fied are installed.

●

Snow tires, etc. are equipped.

●

The vehicle is being driven at 

extremely high speeds.

Functions included in LTA sys-
tem

187

4-5. Using the driving support systems

4

Driving

■

Steering assist function

When the system determines that the 
vehicle might depart from its lane or 
course

*

, the system provides assis-

tance as necessary by operating the 
steering wheel in small amounts for a 
short period of time to keep the vehicle 
in its lane.

When the system determines that the vehi-
cle might depart from its lane and that the 
possibility of a collision with an overtaking 
vehicle in the adjacent lane is high, the 
steering assist function will operate even if 
the turn signals are operating.

*

: Boundary between asphalt and the side 

of the road, such as grass, soil, or a curb

■

Vehicle sway warning function

When the vehicle is swaying within a 
lane, the warning buzzer will sound 
and a message will be displayed on the 
multi-information display to alert the 
driver.

■

Lane centering function

This function is linked with dynamic 
radar cruise control with full-speed 
range and provides the required assis-
tance by operating the steering wheel 
to keep the vehicle in its current lane.

When dynamic radar cruise control with 
full-speed range is not operating, the lane 
centering function does not operate.
In situations where the white (yellow) lane 
lines are difficult to see or are not visible, 
such as when in a traffic jam, this function 
will operate to help follow a preceding 
vehicle by monitoring the position of the 
preceding vehicle.

188

4-5. Using the driving support systems

Press the LTA switch to turn the LTA 
system on.

The LTA indicator illuminates and a mes-
sage is displayed on the multi-information 
display.

Press the LTA switch again to turn the 
LTA system off.

When the LTA system is turned on or off, 
operation of the LTA system continues in 
the same condition the next time the 
engine is started.

LTA indicator

The illumination condition of the indicator 
informs the driver of the system operation 
status.
Illuminated in white: 
LTA system is operating.
Illuminated in green: 
Steering wheel assistance of the steering 
assist function or lane centering function is 
operating.
Flashing in orange: 
Lane departure alert function is operating.

Operation display of steering 
wheel operation support

Displayed when the multi-information dis-
play is switched to the driving support sys-
tem information display.
Indicates that steering wheel assistance of 
the steering assist function or lane center-
ing function is operating.
Both outer sides of the lane are displayed: 
Indicates that steering wheel assist of the 
lane centering function is operating.
One outer side of the lane is displayed: 
Indicates that steering wheel assist of the 
steering assist function is operating.
Both outer sides of the lane are flashing: 
Alerts the driver that their input is neces-
sary to stay in the center of the lane (lane 

Turning LTA system on

Indications on multi-information 
display

A

B

189

4-5. Using the driving support systems

4

Driving

centering function).

Lane departure alert function dis-
play

Displayed when the multi-information dis-
play is switched to the driving support sys-
tem information display.



Inside of displayed lines is white

Indicates that the system is recognizing 
white (yellow) lines or a course

*

. When the 

vehicle departs from its lane, the white line 
displayed on the side the vehicle departs 
from flashes orange.



Inside of displayed lines is black

Indicates that the system is not able to rec-
ognize white (yellow) lines or a course

*

 or 

is temporarily canceled.

Follow-up cruising display

Displayed when the multi-information dis-
play is switched to the driving support sys-
tem information display.
Indicates that steering assist of the lane 
centering function is operating by monitor-

ing the position of a preceding vehicle.
When the follow-up cruising display is dis-
played, if the preceding vehicle moves, 
your vehicle may move in the same way. 
Always pay careful attention to your sur-
roundings and operate the steering wheel 
as necessary to correct the path of the 
vehicle and ensure safety.

*

: Boundary between asphalt and the side 

of the road, such as grass, soil, or a curb

■

Operation conditions of each function

●

Lane departure alert function

This function operates when all of the fol-
lowing conditions are met.
• LTA is turned on.

• Vehicle speed is approximately 32 mph 

(50 km/h) or more.

*1

• System recognizes white (yellow) lane 

lines or a course

*2

. (When a white [yel-

low] line or course

*2

 is recognized on 

only one side, the system will operate 

only for the recognized side.)

• Width of traffic lane is approximately 9.8 

ft. (3 m) or more.

• Turn signal lever is not operated. (Except 

when another vehicle is in the lane on the 

side where the turn signal was operated)

• Vehicle is not being driven around a 

sharp curve.

• No system malfunctions are detected. 

(



P.191)

*1

: The function operates even if the vehicle 

speed is less than approximately 32 mph 
(50 km/h) when the lane centering 
function is operating.

*2

: Boundary between asphalt and the side 

of the road, such as grass, soil, or a curb

●

Steering assist function

This function operates when all of the fol-
lowing conditions are met in addition to the 
operation conditions for the lane departure 
alert function.
• Vehicle is not accelerated or decelerated 

by a fixed amount or more.

C

D

190

4-5. Using the driving support systems

• Steering wheel is not operated with a 

steering force level suitable for changing 

lanes.

• ABS, VSC, TRAC and PCS are not 

operating.

• TRAC or VSC is not turned off.

●

Vehicle sway warning function

This function operates when all of the fol-
lowing conditions are met.
• Setting for “Warning” in 

 of the multi-

information display is set to “On”. 
(



P.76)

• Vehicle speed is approximately 32 mph 

(50 km/h) or more.

• Width of traffic lane is approximately 9.8 

ft. (3 m) or more.

• No system malfunctions are detected. 

(



P.191)

●

Lane centering function

This function operates when all of the fol-
lowing conditions are met.
• LTA is turned on.
• Setting for “Lane Center” in 

 of the 

multi-information display is set to “On”. 
(



P.76)

• This function recognizes white (yellow) 

lane lines or the position of a preceding 

vehicle (except when the preceding vehi-

cle is small, such as a motorcycle).

• The dynamic radar cruise control with 

full-speed range is operating in vehicle-

to-vehicle distance control mode.

• Width of traffic lane is approximately 10 

to 13 ft. (3 to 4 m).

• Turn signal lever is not operated.

• Vehicle is not being driven around a 

sharp curve.

• No system malfunctions are detected. 

(



P.191)

• Vehicle does not accelerate or deceler-

ate by a fixed amount or more.

• Steering wheel is not operated with a 

steering force level suitable for changing 

lanes.

• ABS, VSC, TRAC and PCS are not 

operating.

• TRAC or VSC is not turned off.

• Hands off steering wheel warning is not 

displayed. (



P.191)

• The vehicle is being driven in the center 

of a lane.

• Steering assist function is not operating.

■

Temporary cancelation of functions

●

When operation conditions are no lon-

ger met, a function may be temporarily 

canceled. However, when the operation 

conditions are met again, operation of 

the function is automatically restored. 

(



P.189)

●

If the operation conditions (



P.189) are 

no longer met while the lane centering 
function is operating, the steering wheel 
may vibrate and the buzzer may sound to 
indicate that the function has been tem-
porarily canceled. However, if the “Alert” 
customization setting is set to 

, the 

system will notify the driver by vibrating 
the steering wheel instead of sounding 
the buzzer.

■

Steering assist function/lane centering 

function

●

Depending on the vehicle speed, lane 

departure situation, road conditions, etc., 

the driver may not feel the function is 

operating or the function may not oper-

ate at all.

●

The steering control of the function is 

overridden by the driver’s steering wheel 

operation.

●

Do not attempt to test the operation of 

the steering assist function.

■

Lane departure alert function

●

The warning buzzer may be difficult to 

hear due to external noise, audio play-

back, etc. Also, it may be difficult to feel 

steering wheel vibrations due to the road 

conditions, etc.

●

If the edge of the course

*

 is not clear or 

straight, the lane departure alert function 

may not operate.

●

It may not be possible for the system to 

determine if there is a danger of a colli-

sion with a vehicle in an adjacent lane.

●

Do not attempt to test the operation of 

the lane departure alert function.

191

4-5. Using the driving support systems

4

Driving

*

: Boundary between asphalt and the side 

of the road, such as grass, soil, or a curb

■

Hands off steering wheel warning

In the following situations, a warning mes-

sage urging the driver to hold the steering 

wheel and the symbol shown in the illustra-

tion are displayed on the multi-information 

display to warn the driver. The warning 

stops when the system determines that the 

driver holds the steering wheel. Always 

keep your hands on the steering wheel 

when using this system, regardless of warn-

ings.

●

When the system determines the driver is 

not holding the steering wheel while the 

lane centering function is operating.

If the driver continues to keep their hands 
off of the steering wheel, the buzzer sounds, 
the driver is warned and the function is tem-
porarily canceled. This warning also oper-
ates in the same way when the driver 
continuously operates the steering wheel 
only a small amount.
The buzzer also sounds even if the alert 
type is set to 

.

●

When the system determines that the 

vehicle may deviate from the lane while 

driving around a curve while the lane 

centering function is operating.

Depending on the vehicle condition and 
road conditions, the warning may not oper-
ate.

●

When the system determines that the 

driver is driving without holding the steer-

ing wheel while the steering wheel assist 

of the steering assist function is operat-

ing.

If the driver continues to keep their hands 

off of the steering wheel and the steering 
wheel assist is operating, the buzzer sounds 
and the driver is warned. Each time the 
buzzer sounds, the continuing time of the 
buzzer becomes longer.
The buzzer also sounds even if the alert 
type is set to 

.

■

Vehicle sway warning function

When the system determines that the vehi-

cle is swaying while the vehicle sway warn-

ing function is operating, a buzzer sounds 

and a warning message urging the driver to 

rest and the symbol shown in the illustration 

are simultaneously displayed on the multi-

information display.

Depending on the vehicle and road condi-

tions, the warning may not operate.

■

Warning message

If the following warning message is dis-

played on the multi-information display and 

the LTA indicator illuminates in orange, fol-

low the appropriate troubleshooting proce-

dure. Also, if a different warning message is 

displayed, follow the instructions displayed 

on the screen.

●

“LTA Malfunction Visit Your Dealer”

The system may not be operating properly. 
Have the vehicle inspected by your Lexus 
dealer.

●

“LTA Unavailable”

The system is temporarily canceled due to a 
malfunction in a sensor other than the front 
camera. Turn the LTA system off, wait for a 
little while, and then turn the LTA system 
back on.

●

“LTA Unavailable at Current Speed”

192

4-5. Using the driving support systems

The function cannot be used as the vehicle 
speed exceeds the LTA operation range. 
Drive slower.

■

Customization

Function settings can be changed.
(Customizable features:



P.404)

*

: If equipped

When the front camera recognizes a 
sign and/or information of a sign is 

RSA (Road Sign Assist)

*

The RSA system recognizes spe-
cific road signs using the front cam-
era and/or navigation system 
(when speed limit information is 
available) to provide information to 
the driver via the display.

If the system judges that the vehicle 
is being driven over the speed limit, 
performing prohibited actions, etc. 
according to the recognized road 
signs, it notifies the driver through a 
visual notification and notification 
buzzer.

WARNING

■

Before using the RSA

Do not rely solely upon the RSA system. 

RSA is a system which supports the 

driver by providing information, but it is 

not a replacement for a driver’s own 

vision and awareness. Drive safely by 

always paying careful attention to the 

traffic rules.

Indication on the multi-informa-
tion display

193

4-5. Using the driving support systems

4

Driving

available from the navigation system, 
the sign will be displayed on the multi-
information display.



When the driving support system 
information is selected, a maximum 
of 3 signs can be displayed. 
(



P.76)



When a tab other than the driving 
support system information is 
selected, the following types of road 
signs will be displayed. (



P.76)

• Speed limit sign
• Do Not Enter sign (when notification is 

necessary)

If signs other than speed limit signs are rec-
ognized, they will be displayed in an over-
lapping stack under the current speed limit 
sign.

The following types of road signs, 

including electronic signs and blinking 
signs, are recognized.

A non-official or a recently introduced traf-
fic sign may not be recognized.

 : Speed limit

 : Do Not Enter

 : Stop

 : Yield

In the following situations, the RSA sys-
tem will notify the driver.



When the vehicle speed exceeds 
the speed notification threshold of 
the speed limit sign displayed, the 
sign display will be emphasized and 
a buzzer will sound.



When the RSA system recognizes a 
do not enter sign and determines 
that your vehicle has entered a no-
entry area, the displayed sign will 
flash and a buzzer will sound.

Depending on the situation, a notifica-
tion function may not operate properly.

■

Setting procedure

1

Press 

 or 

 of the meter control 

switches and select 

Supported types of road signs

Notification function

194

4-5. Using the driving support systems

2

Press 

 or 

 of the meter control 

switches and select “Vehicle Settings”, 
then press “OK”

3

Press 

 or 

 of the meter control 

switches and select 

, then press 

“OK”

4

Press 

 or 

 of the meter control 

switches and select “RSA”, then press 
“OK”

■

Automatic turn-off of RSA sign display

In the following situations, a displayed 

speed limit sign and/or do not enter sign 

will stop being displayed automatically:

●

No sign has been recognized for a cer-

tain distance.

●

The road changes due to a left or right 

turn, etc.

In the following situations, stop and yield 

signs will stop being displayed automati-

cally:

●

The system determines that your vehicle 

has passed the sign.

●

The road changes due to a left or right 

turn, etc.

■

Conditions in which the function may 

not operate or detect correctly

In the following situations, RSA does not 

operate normally and may not recognize 

signs, display the incorrect sign, etc. How-

ever, this does not indicate a malfunction.

●

The front camera is misaligned due to a 

strong impact being applied to the sen-

sor, etc.

●

Dirt, snow, stickers, etc. are on the wind-

shield near the front camera.

●

In inclement weather such as heavy rain, 

fog, snow or sand storms.

●

Light from an oncoming vehicle, the sun, 

etc. enters the front camera.

●

The sign is dirty, faded, tilted or bent.

●

The contrast of electronic sign is low.

●

All or part of the sign is hidden by the 

leaves of a tree, a pole, etc.

●

The sign is only visible to the front camera 

for a short amount of time.

●

The driving scene (turning, lane change, 

etc.) is judged incorrectly.

●

If a sign not appropriate for the currently 

traveled lane, but the sign exists directly 

after a freeway branches, or in an adja-

cent lane just before merging.

●

Stickers are attached to the rear of the 

preceding vehicle.

●

A sign resembling a system compatible 

sign is recognized.

●

Side road speed signs may be detected 

and displayed (if positioned in sight of the 

front camera) while the vehicle is travel-

ing on the main road.

●

Roundabout exit road speed signs may 

be detected and displayed (if positioned 

in sight of the front camera) while travel-

ing on a roundabout.

●

The front of the vehicle is raised or low-

ered due to the carried load.

●

The surrounding brightness is not suffi-

cient or changes suddenly.

●

When a sign intended for trucks, etc. is 

recognized.

●

The navigation system map data is out-

dated.

●

The navigation system is not operating.

●

The speed information displayed on the 

meter and on the navigation system may 

be different due to the navigation system 

using map data.

■

Speed limit sign display

If the engine switch was last turned off while 

a speed limit sign was displayed on the 

multi-information display, the same sign dis-

plays again when the engine switch is 

turned to IGNITION ON mode.

■

If “RSA Malfunction Visit Your Dealer” 

is shown

The system may be malfunctioning. Have 

the vehicle inspected by your Lexus dealer.

■

Customization

Some functions can be customized. (Cus-

tomizable features: 



P.404)

195

4-5. Using the driving support systems

4

Driving

■

Meter display

Multi-information display

Set speed

Indicators

■

Operation switches

Vehicle-to-vehicle distance switch

“+RES” switch

Cruise control main switch

Cancel switch

“-SET” switch

Dynamic radar cruise con-
trol with full-speed range

In vehicle-to-vehicle distance con-
trol mode, the vehicle automati-
cally accelerates, decelerates and 
stops to match the speed changes 
of the preceding vehicle even if the 
accelerator pedal is not depressed. 
In constant speed control mode, 
the vehicle runs at a fixed speed.
Use the dynamic radar cruise con-
trol with full-speed range on free-
ways and highways.



Vehicle-to-vehicle distance con-
trol mode (



P.197)



Constant speed control mode 
(



P.202)

System Components

A

B

C

WARNING

■

Before using dynamic radar cruise 

control with full-speed range

●

Driving safely is the sole responsibility 

of the driver. Do not rely solely on the 

system, and drive safely by always pay-

ing careful attention to your surround-

ings.

●

The dynamic radar cruise control with 

full-speed range provides driving 

assistance to reduce the driver’s bur-

den. However, there are limitations to 

the assistance provided.

Read the following conditions care-

fully. Do not overly rely on this system 

and always drive carefully.

• When the sensor may not be correctly 

detecting the vehicle ahead 



P.204

• Conditions under which the vehicle-

to-vehicle distance control mode may 

not function correctly 



P.204

●

Set the speed appropriately depend-

ing on the speed limit, traffic flow, road 

conditions, weather conditions, etc. 

The driver is responsible for checking 

the set speed.

A

B

C

D

E

196

4-5. Using the driving support systems

WARNING

●

Even when the system is functioning 

normally, the condition of the preced-

ing vehicle as detected by the system 

may differ from the condition 

observed by the driver. Therefore, the 

driver must always remain alert, assess 

the danger of each situation and drive 

safely. Relying solely on this system or 

assuming the system ensures safety 

while driving can lead to an accident, 

resulting in death or serious injury.

●

Switch the dynamic radar cruise con-

trol with full-speed range setting to off, 

using the cruise control main switch 

when not in use.

■

Cautions regarding the driving assist 

systems

Observe the following precautions, as 

there are limitations to the assistance 

provided by the system. 

Failure to do so may cause an accident 

resulting in death or serious injury.

●

Assisting the driver to measure follow-

ing distance 

The dynamic radar cruise control with 

full-speed range is only intended to 

help the driver in determining the fol-

lowing distance between the driver’s 

own vehicle and a designated vehicle 

traveling ahead. It is not a mechanism 

that allows careless or inattentive driv-

ing, and it is not a system that can assist 

the driver in low-visibility conditions. 

It is still necessary for driver to pay 

close attention to the vehicle’s sur-

roundings.

●

Assisting the driver to judge proper 

following distance 

The dynamic radar cruise control with 

full-speed range determines whether 

the following distance between the 

driver’s own vehicle and a designated 

vehicle traveling ahead is within a set 

range. It is not capable of making any 

other type of judgement. Therefore, it 

is absolutely necessary for the driver to 

remain vigilant and to determine 

whether or not there is a possibility of 

danger in any given situation.

●

Assisting the driver to operate the 

vehicle 

The dynamic radar cruise control with 

full-speed range does not include 

functions which will prevent or avoid 

collisions with vehicles ahead of your 

vehicle. Therefore, if there is ever any 

possibility of danger, the driver must 

take immediate and direct control of 

the vehicle and act appropriately in 

order to ensure the safety of all 

involved.

■

Situations unsuitable for dynamic 

radar cruise control with full-speed 

range

Do not use dynamic radar cruise control 

with full-speed range in any of the follow-

ing situations. 

Doing so may result in inappropriate 

speed control and could cause an acci-

dent resulting in death or serious injury.

●

Roads where there are pedestrians, 

cyclists, etc.

●

In heavy traffic

●

On roads with sharp bends

●

On winding roads

●

On slippery roads, such as those cov-

ered with rain, ice or snow

●

On steep downhills, or where there 

are sudden changes between sharp up 

and down gradients 

Vehicle speed may exceed the set 

speed when driving down a steep hill.

197

4-5. Using the driving support systems

4

Driving

This mode employs a radar to detect the presence of vehicles up to approximately 
328 ft. (100 m) ahead, determines the current vehicle-to-vehicle following dis-
tance, and operates to maintain a suitable following distance from the vehicle 
ahead. The desired vehicle-to-vehicle distance can also be set by operating the 
vehicle-to-vehicle distance switch.

When driving on downhill slopes, the vehicle-to-vehicle distance may become shorter.

Example of constant speed cruising
When there are no vehicles ahead

WARNING

●

At entrances to freeways and high-

ways

●

When weather conditions are bad 

enough that they may prevent the sen-

sors from detecting correctly (fog, 

snow, sandstorm, heavy rain, etc.)

●

When there is rain, snow, etc. on the 

front surface of the radar or front cam-

era

●

In traffic conditions that require fre-

quent repeated acceleration and 

deceleration

●

During emergency towing

●

When an approach warning buzzer is 

heard often

Driving in vehicle-to-vehicle distance control mode

A

198

4-5. Using the driving support systems

The vehicle travels at the speed set by the driver.

Example of deceleration cruising and follow-up cruising
When a preceding vehicle driving slower than the set speed appears

When a vehicle is detected running ahead of you, the system automatically decelerates 
your vehicle. When a greater reduction in vehicle speed is necessary, the system applies 
the brakes (the stop lights will come on at this time). The system will respond to changes in 
the speed of the vehicle ahead in order to maintain the vehicle-to-vehicle distance set by 
the driver. Approach warning warns you when the system cannot decelerate sufficiently to 
prevent your vehicle from closing in on the vehicle ahead. 
When the vehicle ahead of you stops, your vehicle will also stop (vehicle is stopped by sys-
tem control). After the vehicle ahead starts off, pressing the “+RES” switch or depressing 
the accelerator pedal (start-off operation) will resume follow-up cruising. If the start-off 
operation is not performed, system control continues to keep your vehicle stopped.
When the turn signal lever is operated and your vehicle moves to an overtaking lane while 
driving at 50 mph (80 km/h) or more, the vehicle will accelerate to help to overtake a 
passing vehicle.
The system’s identification of what is an overtaking lane may be determined solely based on 
the location of the steering wheel in the vehicle (left side driver position versus right side 
driver position.) If the vehicle is driven to a region where the overtaking lane is on a differ-
ent side from where the vehicle is normally driven, the vehicle may accelerate when the 
turn signal lever is operated in the opposite direction to the overtaking lane (e.g., if the 
driver normally operates the vehicle in a region where the overtaking lane is to the right but 
then drives to a region where the overtaking lane is to the left, the vehicle may accelerate 
when the right turn signal is activated).

Example of acceleration
When there are no longer any preceding vehicles driving slower than the set 
speed

The system accelerates until the set speed is reached. The system then returns to constant 
speed cruising.

1

Press the cruise control main 
switch to activate the cruise con-
trol.

Dynamic radar cruise control indicator will 

come on and a message will be displayed 

on the multi-information display. Press the 

switch again to deactivate the cruise con-

trol.

If the cruise control main switch is pressed 

and held for 1.5 seconds or more, the sys-

tem turns on in constant speed control 

mode. (



P.202)

B

C

Setting the vehicle speed (vehi-
cle-to-vehicle distance control 
mode)

199

4-5. Using the driving support systems

4

Driving

2

Accelerate or decelerate, with 
accelerator pedal operation, to the 
desired vehicle speed (at or above 
approximately 20 mph [30 km/h]) 
and press the “-SET” switch to set 
the speed.

Cruise control “SET” indicator will come 

on.
The vehicle speed at the moment the 

switch is released becomes the set speed.



Adjusting the set speed by the 
switch

To change the set speed, press the 
“+RES” or “-SET” switch until the 
desired set speed is displayed.

1

Increases the speed

(Except when the vehicle has been 
stopped by system control in vehicle-to-
vehicle distance control mode)

2

Decreases the speed

Fine adjustment: Press the switch.
Large adjustment: Press and hold the 
switch to change the speed, and 
release when the desired speed is 
reached.
In the vehicle-to-vehicle distance con-
trol mode, the set speed will be 
increased or decreased as follows:



For the U.S. mainland and Hawaii

Fine adjustment: By 1 mph (1.6 km/h)

*1

 or 1 

km/h (0.6 mph)

*2

 each time the switch is 

pressed 
Large adjustment: Increases or decreases 
in 1mph (1.6 km/h)

*1

 or 1 km/h (0.6 mph)

*2

 

increments for as long as the switch is held



Except for the U.S. mainland and 
Hawaii

Fine adjustment: By 1 mph (1.6 km/h)

*1

 or 1 

km/h (0.6 mph)

*2

 each time the switch is 

pressed 
Large adjustment: Increases or decreases 
in 5 mph (8 km/h)

*1

 or 5 km/h (3.1 mph)

*2

 

increments for as long as the switch is held

In the constant speed control mode 
(



P.202), the set speed will be 

increased or decreased as follows:

Fine adjustment: By 1 mph (1.6 km/h)

*1

 or 1 

km/h (0.6 mph)

*2

 each time the switch is 

pressed
Large adjustment: The speed will continue 
to change while the switch is held.

*1

: When the set speed is shown in “MPH”

*2

: When the set speed is shown in “km/h”



Increasing the set speed by the 
accelerator pedal

Adjusting the set speed

200

4-5. Using the driving support systems

1

Accelerate with accelerator pedal 
operation to the desired vehicle 
speed

2

Press the “-SET” switch

Pressing the switch changes the vehi-
cle-to-vehicle distance as follows:

1

Long

2

Medium

3

Short

If a vehicle is running ahead of you, the pre-
ceding vehicle mark 

 will also be dis-

played.

Select a distance from the table below. 
Note that the distances shown corre-
spond to a vehicle speed of 50 mph 
(80 km/h). Vehicle-to-vehicle dis-
tance increases/decreases in accor-
dance with vehicle speed. When the 
vehicle is stopped by system control, 
the vehicle stops at a certain vehicle-

to-vehicle distance depending on the 
situation.

After the vehicle ahead of you starts 
off, press the “+RES” switch.
Your vehicle will also resume follow-
up cruising if the accelerator pedal is 
depressed after the vehicle ahead of 
you starts off.

Changing the vehicle-to-vehicle 
distance (vehicle-to-vehicle dis-
tance control mode)

Vehicle-to-vehicle distance set-
tings (vehicle-to-vehicle dis-
tance control mode)

A

Distance options

Vehicle-to-vehicle 

distance

Long

Approximately 160 

ft. (50 m)

Medium

Approximately 130 

ft. (40 m)

Short

Approximately 100 

ft. (30 m)

Resuming follow-up cruising 
when the vehicle has been 
stopped by system control (vehi-
cle-to-vehicle distance control 
mode)

201

4-5. Using the driving support systems

4

Driving

1

Pressing the cancel switch cancels 
the speed control.

The speed control is also canceled when 
the brake pedal is depressed.
(When the vehicle has been stopped by 
system control, depressing the brake pedal 
does not cancel the setting.)

2

Pressing the “+RES” switch 
resumes the cruise control and 
returns vehicle speed to the set 
speed.

When your vehicle is too close to a 
vehicle ahead, and sufficient automatic 
deceleration via the cruise control is 
not possible, the display will flash and 
the buzzer will sound to alert the 
driver. An example of this would be if 
another driver cuts in front of you while 
you are following a vehicle. Depress 
the brake pedal to ensure an appropri-
ate vehicle-to-vehicle distance.

■

Warnings may not occur when

In the following instances, warnings 
may not occur even when the vehicle-
to-vehicle distance is small.



When the speed of the preceding 
vehicle matches or exceeds your 
vehicle speed



When the preceding vehicle is trav-
eling at an extremely slow speed



Immediately after the cruise control 
speed was set



When depressing the accelerator 
pedal

While driving in vehicle-to-vehicle dis-
tance control mode, this function will 
reduce the vehicle speed, if it is deter-
mined to be necessary.

■

Function operation

When the steering wheel begins to be 
turned, the vehicle speed will begin 
being reduced. When the steering 
wheel is returned to the center posi-
tion, the vehicle speed reduction will 
end.
Depending on the situation, the vehicle 
speed will then return to the vehicle-to-

Canceling and resuming the 
speed control

Approach warning (vehicle-to-
vehicle distance control mode)

Curve speed reduction function

202

4-5. Using the driving support systems

vehicle distance control mode set 
speed.
In situations where vehicle-to-vehicle 
distance control needs to operate, 
such as when a preceding vehicle cuts 
in front of your vehicle, the curve 
speed reduction function will be can-
celed.

■

Operation display

Displayed when the vehicle speed is 
being reduced.

When the vehicle speed reduction ends, 
the display will disappear.

■

Changing the settings of the curve 
speed reduction function

The curve speed reduction function 
can be enabled/disabled and the vehi-
cle speed reduction strength can be 
adjusted on 

 (



P.76) of the multi-

information display.

The setting will change each time the “OK” 
meter control switch is pressed.

When constant speed control mode is 
selected, your vehicle will maintain a 
set speed without controlling the vehi-
cle-to-vehicle distance. Select this 

mode only when vehicle-to-vehicle 
distance control mode does not func-
tion correctly due to a dirty radar, etc.

1

With the cruise control off, press 
and hold the cruise control main 
switch for 1.5 seconds or more.

Immediately after the switch is pressed, the 

dynamic radar cruise control indicator will 

come on. Afterwards, it switches to the 

cruise control indicator.
Switching to constant speed control mode 

is only possible when operating the switch 

with the cruise control off.

2

Accelerate or decelerate, with 
accelerator pedal operation, to the 
desired vehicle speed (at or above 
approximately 20 mph [30 km/h]) 
and press the “-SET” switch to set 
the speed.

Cruise control “SET” indicator will come 

on.
The vehicle speed at the moment the 

switch is released becomes the set speed.
Adjusting the speed setting: 



P.199

Canceling and resuming the speed setting: 

Selecting constant speed con-
trol mode

203

4-5. Using the driving support systems

4

Driving



P.201

■

Dynamic radar cruise control with full-

speed range can be set when

●

The shift lever is in D.

●

The desired set speed can be set when 

the vehicle speed is approximately 20 

mph (30 km/h) or more. (However, 

when the vehicle speed is set while driv-

ing at below approximately 20 mph [30 

km/h], the set speed will be set to 

approximately 20 mph [30 km/h].)

■

Accelerating after setting the vehicle 

speed

The vehicle can accelerate by operating the 

accelerator pedal. After accelerating, the 

set speed resumes. However, during vehi-

cle-to-vehicle distance control mode, the 

vehicle speed may decrease below the set 

speed in order to maintain the distance to 

the preceding vehicle.

■

When the vehicle stops while follow-up 

cruising

●

Pressing the “+RES” switch while the 

vehicle ahead stops will resume follow-

up cruising if the vehicle ahead starts off 

within approximately 3 seconds after the 

switch is pressed.

●

If the vehicle ahead starts off within 3 sec-

onds after your vehicle stops, follow-up 

cruising will be resumed.

■

Automatic cancelation of vehicle-to-

vehicle distance control mode

Vehicle-to-vehicle distance control mode is 

automatically canceled in the following situ-

ations.

●

VSC is activated.

●

TRAC is activated for a period of time.

●

When the VSC or TRAC system is 

turned off.

●

The sensor cannot detect correctly 

because it is covered in some way.

●

When the brake control or output 

restriction control of a driving support 

system operates. (For example: Pre-Col-

lision System, Drive-Start Control)

●

The parking brake is operated.

●

The vehicle is stopped by system control 

on a steep incline.

●

The following are detected when the 

vehicle has been stopped by system con-

trol:

• The driver is not wearing a seat belt.

• The driver’s door is opened.

• The vehicle has been stopped for about 3 

minutes

If vehicle-to-vehicle distance control mode 

is automatically canceled for any reasons 

other than the above, there may be a mal-

function in the system. Contact your Lexus 

dealer.

■

Automatic cancelation of constant 

speed control mode

Constant speed control mode is automati-

cally canceled in the following situations:

●

Actual vehicle speed is more than 

approximately 10 mph (16 km/h) below 

the set vehicle speed.

●

Actual vehicle speed falls below approxi-

mately 20 mph (30 km/h).

●

VSC is activated.

●

TRAC is activated for a period of time.

●

When the VSC or TRAC system is 

turned off.

●

When the brake control or output 

restriction control of a driving support 

system operates. (For example: Pre-Col-

lision System, Drive-Start Control)

●

The parking brake is operated.

If constant speed control mode is automati-

cally canceled for any reasons other than 

the above, there may be a malfunction in 

the system. Contact your Lexus dealer.

204

4-5. Using the driving support systems

■

Situations in which the curve speed 

reduction function may not operate

In situations such as the following, the curve 

speed reduction function may not operate:

●

When the vehicle is being driven around 

a gentle curve.

●

When the accelerator pedal is being 

depressed.

●

When the vehicle is being driven around 

an extremely short curve.

■

Brake operation

A brake operation sound may be heard and 

the brake pedal response may change, but 

these are not malfunctions.

■

Warning messages and buzzers for 

dynamic radar cruise control with full-

speed range

Warning messages and buzzers are used to 

indicate a system malfunction or to inform 

the driver of the need for caution while driv-

ing. If a warning message is shown on the 

multi-information display, read the message 

and follow the instructions. (



P.172, 357)

■

When the sensor may not be correctly 

detecting the vehicle ahead

In the case of the following and depending 

on the conditions, operate the brake pedal 

when deceleration of the system is insuffi-

cient or operate the accelerator pedal 

when acceleration is required. 

As the sensor may not be able to correctly 

detect these types of vehicles, the approach 

warning (



P.201) may not be activated.

●

Vehicles that cut in suddenly

●

Vehicles traveling at low speeds

●

Vehicles that are not moving in the same 

lane

●

Vehicles with small rear ends (trailers 

with no load on board, etc.)

●

Motorcycles traveling in the same lane

●

When water or snow thrown up by the 

surrounding vehicles hinders the detect-

ing of the sensor

●

When your vehicle is pointing upwards 

(caused by a heavy load in the luggage 

compartment, etc.)

●

Preceding vehicle has an extremely high 

ground clearance

■

Conditions under which the vehicle-to-

vehicle distance control mode may not 

function correctly

In the case of the following conditions, 

operate the brake pedal (or accelerator 

pedal, depending on the situation) as nec-

essary. 

As the sensor may not be able to correctly 

detect vehicles ahead, the system may not 

operate properly.

●

When the road curves or when the lanes 

are narrow

●

When steering wheel operation or your 

position in the lane is unstable

205

4-5. Using the driving support systems

4

Driving

●

When the vehicle ahead of you deceler-

ates suddenly

●

When driving on a road surrounded by a 

structure, such as in a tunnel or on a 

bridge

●

While the vehicle speed is decreasing to 

the set speed after the vehicle acceler-

ates by depressing the accelerator pedal

■

Situations in which the curve speed 

reduction function may not operate 

properly

In situations such as the following, the curve 

speed reduction function may not operate 

properly:

●

When the vehicle is being driven around 

a curve on an incline/decline

●

When the course of the vehicle differs 

from the shape of the curve

●

When the vehicle speed is excessively 

high when entering a curve

●

When the steering wheel is suddenly 

operated

Meter control switches

Turn the Blind Spot Monitor on/off.

BSM (Blind Spot Monitor)

The Blind Spot Monitor is a system 
that uses rear side radar sensors 
installed on the inner side of the 
rear bumper on the left and right 
side to assist the driver in confirm-
ing safety when changing lanes.

WARNING

■

Cautions regarding the use of the 

function

The driver is solely responsible for safe 

driving. Always drive safely, taking care 

to observe your surroundings.
The Blind Spot Monitor is a supplemen-

tary function which alerts the driver that a 

vehicle is in a blind spot of the outside 

rear view mirrors or is approaching rap-

idly from behind into a blind spot. Do not 

overly rely on the Blind Spot Monitor. As 

the function cannot judge if it is safe to 

change lanes, over reliance could lead to 

an accident resulting in death or serious 

injury.
As the system may not function correctly 

under certain conditions, the driver’s 

own visual confirmation of safety is nec-

essary.

System components

A

206

4-5. Using the driving support systems

Outside rear view mirror indicators

When a vehicle is detected in a blind spot 
of the outside rear view mirrors or 
approaching rapidly from behind into a 
blind spot, the outside rear view mirror 
indicator on the detected side will illumi-
nate. If the turn signal lever is operated 
toward the detected side, the outside rear 
view mirror indicator will flash.

BSM indicator

When the Blind Spot Monitor is turned on, 
the indicator comes on.

1

Press 

 or 

 of the meter con-

trol switches, select 

.

2

Press 

 or 

 of the meter con-

trol switches, select “BSM”, and 
then press “OK”.

■

Outside rear view mirror indicator visi-

bility

In strong sunlight, the outside rear view mir-

ror indicator may be difficult to see.

■

When “Blind Spot Monitor Unavailable” 

is shown on the multi-information dis-

play

Ice, snow, mud, etc., may be attached to the 

rear bumper around the sensors. 

(



P.206) Remove the ice, snow, mud, etc., 

attached to the rear bumper around the 

sensors to return the function to normal. 

Additionally, the sensors may not operate 

normally when driving in extremely hot or 

cold environments.

■

Customization

Some functions can be customized. (Cus-

tomizable features: 



P.404)

Turning the Blind Spot Monitor 
on/off

B

C

WARNING

■

To ensure the system can operate 

properly

Blind Spot Monitor sensors are installed 

behind the left and right sides of the rear 

bumper respectively. Observe the fol-

lowing to ensure the Blind Spot Monitor 

can function correctly.

●

Keep the sensors and the surrounding 

areas on the rear bumper clean at all 

times. 

If a sensor or its surrounding area on 

the rear bumper is dirty or covered 

with snow, the Blind Spot Monitor may 

not operate and a warning message 

(



P.206) will be displayed. In this sit-

uation, clear off the dirt or snow and 

drive the vehicle with the operation 

conditions of the BSM function 

(



P.208) satisfied for approximately 

10 minutes. If the warning message 

does not disappear, have the vehicle 

inspected by your Lexus dealer.

●

Do not subject a sensor or its sur-

rounding area on the rear bumper to a 

strong impact. 

If a sensor is moved even slightly off 

position, the system may malfunction 

and vehicles may not be detected cor-

rectly. 

In the following situations, have your 

vehicle inspected by your Lexus 

dealer.

• A sensor or its surrounding area is 

subject to a strong impact.

• If the surrounding area of a sensor is 

scratched or dented, or part of them 

has become disconnected.

●

Do not disassemble the sensor.

207

4-5. Using the driving support systems

4

Driving

■

Vehicles that can be detected by the Blind Spot Monitor

The Blind Spot Monitor uses rear side radar sensors to detect the following vehi-
cles traveling in adjacent lanes and advises the driver of the presence of such vehi-
cles via the indicators on the outside rear view mirrors.

Vehicles that are traveling in areas that are not visible using the outside rear 
view mirrors (the blind spots)

Vehicles that are approaching rapidly from behind in areas that are not visible 
using the outside rear view mirrors (the blind spots)

■

Blind Spot Monitor detection areas

The areas that vehicles can be detected in are outlined below.

WARNING

●

Do not attach accessories, stickers 

(including transparent stickers), alumi-

num tape, etc. to a sensor or its sur-

rounding area on the rear bumper.

●

Do not modify the sensor or surround-

ing area on the rear bumper.

●

If a sensor or the rear bumper needs to 

be removed/installed or replaced, 

contact your Lexus dealer.

●

Do not paint the rear bumper any 

color other than an official Lexus color.

Blind Spot Monitor operation

A

B

208

4-5. Using the driving support systems

The range of each detection area is:

Approximately 1.6 ft. (0.5 m) to 11.5 ft. (3.5 m) from either side of the vehicle

*1

Approximately 3.3 ft. (1 m) forward of the rear bumper

Approximately 9.8 ft. (3 m) from the rear bumper

Approximately 9.8 ft. (3 m) to 197 ft. (60 m) from the rear bumper

*2

*1

: The area between the side of the vehicle and 1.6 ft. (0.5 m) from the side of the vehicle 

cannot be detected.

*2

: The greater the difference in speed between your vehicle and the detected vehicle is, 

the farther away the vehicle will be detected, causing the outside rear view mirror indi-
cator to illuminate or flash.

■

The Blind Spot Monitor is operational 

when

The Blind Spot Monitor is operational when 

all of the following conditions are met:

●

The Blind Spot Monitor is on.

●

The shift lever is in a position other than R.

●

The vehicle speed is greater than 

approximately 10 mph (16 km/h).

■

The Blind Spot Monitor will detect a 

vehicle when

The Blind Spot Monitor will detect a vehicle 

present in the detection area in the follow-

ing situations:

●

A vehicle in an adjacent lane overtakes 

your vehicle.

●

You overtake a vehicle in adjacent lane 

slowly.

●

Another vehicle enters the detection 

area when it changes lanes.

■

Conditions under which the system will 

not detect a vehicle

The Blind Spot Monitor is not designed to 

detect the following types of vehicles 

and/or objects:

●

Small motorcycles, bicycles, pedestrians, 
etc.

*

●

Vehicles traveling in the opposite direc-

tion

●

Guardrails, walls, signs, parked vehicles 
and similar stationary objects

*

●

Following vehicles that are in the same 
lane

*

●

Vehicles traveling 2 lanes away from 
your vehicle

*

●

Vehicles which are being overtaken rap-
idly by your vehicle.

*

*

: Depending on the conditions, detection 

of a vehicle and/or object may occur.

A
B
C
D

209

4-5. Using the driving support systems

4

Driving

■

Conditions under which the system may 

not function correctly

●

The Blind Spot Monitor may not detect 

vehicles correctly in the following situa-

tions:

• When the sensor is misaligned due to a 

strong impact to the sensor or its sur-

rounding area

• When mud, snow, ice, a sticker, etc. is 

covering the sensor or surrounding area 

on the rear bumper

• When driving on a road surface that is 

wet with standing water during bad 

weather, such as heavy rain, snow, or fog

• When multiple vehicles are approaching 

with only a small gap between each vehi-

cle

• When the distance between your vehicle 

and a following vehicle is short

• When there is a significant difference in 

speed between your vehicle and the 

vehicle that enters the detection area

• When the difference in speed between 

your vehicle and another vehicle is 

changing

• When a vehicle enters a detection area 

traveling at about the same speed as your 

vehicle

• As your vehicle starts from a stop, a vehi-

cle remains in the detection area

• When driving up and down consecutive 

steep inclines, such as hills, dips in the 

road, etc.

• When driving on roads with sharp bends, 

consecutive curves, or uneven surfaces

• When vehicle lanes are wide, or when 

driving on the edge of a lane, and the 

vehicle in an adjacent lane is far away 

from your vehicle

• When an accessory (such as a bicycle 

carrier) or towing eyelet is installed to the 

rear of the vehicle

• When there is a significant difference in 

height between your vehicle and the 

vehicle that enters the detection area

• Immediately after the Blind Spot Monitor 

is turned on

●

Instances of the Blind Spot Monitor 

unnecessarily detecting a vehicle and/or 

object may increase in the following situ-

ations:

• When the sensor is misaligned due to a 

strong impact to the sensor or its sur-

rounding area

• When the distance between your vehicle 

and a guardrail, wall, etc. that enters the 

detection area is short

• When driving up and down consecutive 

steep inclines, such as hills, dips in the 

road, etc.

• When vehicle lanes are narrow, or when 

driving on the edge of a lane, and a vehi-

cle traveling in a lane other than the adja-

cent lanes enters the detection area

• When driving on roads with sharp bends, 

consecutive curves, or uneven surfaces

• When the tires are slipping or spinning

• When the distance between your vehicle 

and a following vehicle is short

• When an accessory (such as a bicycle 

carrier) or towing eyelet is installed to the 

rear of the vehicle

210

4-5. Using the driving support systems



Vehicles without Adaptive Variable 
Suspension system

Except F SPORT models

F SPORT models

1

Normal mode

Provides an optimal balance of fuel econ-
omy, quietness, and dynamic performance. 
Suitable for city driving.
Press the switch to change to normal mode 
when not in normal mode.

2

Eco drive mode

Helps the driver accelerate in an eco-
friendly manner and improve fuel economy 
through moderate throttle characteristics 
and by controlling the operation of the air 
conditioning system (heating/cooling).
When not in Eco drive mode, if the Driving 
Mode Select switch is turned toward you, 
the Eco drive mode indicator comes on.

3

Sport mode

Controls the transmission and engine to 
provide quick, powerful acceleration. This 
mode is suitable for when agile driving 
response is desired, such as when driving 
on roads with many curves.
When not in SPORT mode, if the Driving 
Mode Select switch is turned away from 
you, the Sport mode indicator comes on.



Vehicles with Adaptive Variable 
Suspension system

1

Normal mode/Custom mode

Normal mode and custom mode are 
selected by pressing the Driving Mode 
Select switch. Each time the switch is 
pressed, the driving mode changes 
between normal mode and custom mode. 
When custom mode is selected, the Cus-
tom mode indicator comes on.
Press the switch to change the driving 
mode to normal mode when not in normal 
mode.
• Normal mode
Provides an optimal balance of fuel econ-
omy, quietness, and dynamic performance. 
Suitable for city driving.
• Custom mode
Allows you to drive with the power train, 

Driving Mode Select switch

The driving modes can be selected 
to suit driving condition.

Selecting the driving mode

A
B

211

4-5. Using the driving support systems

4

Driving

chassis and air conditioning system func-
tions set to your preferred settings. 
Custom mode settings can only be 
changed on the drive mode customization 
display of the Center Display. (



P.404)

2

Eco drive mode

Helps the driver accelerate in an eco-
friendly manner and improve fuel economy 
through moderate throttle characteristics 
and by controlling the operation of the air 
conditioning system (heating/cooling).
When not in Eco drive mode, if the Driving 
Mode Select switch is turned toward you, 
the Eco drive mode indicator comes on.

3

Sport mode

• Sport  S  mode
Controls the transmission and engine to 
provide quick, powerful acceleration. This 
mode is suitable for when agile driving 
response is desired, such as when driving 
on roads with many curves.
When not in Sport S mode, if the Driving 
Mode Select switch is turned away from 
you, the Sport S mode indicator comes on.
• Sport  S+  mode
Helps to ensure steering performance and 
driving stability by simultaneously con-
trolling the steering and suspension in 
addition to the transmission and engine.
Suitable for sportier driving.
When in Sport S mode, if the Driving 
Mode Select switch is turned away from 
you, the Sport S+ mode indicator comes 
on.

■

Operation of the air conditioning sys-

tem in Eco drive mode

Eco drive mode controls the heating/cool-

ing operations and fan speed of the air con-

ditioning system to enhance fuel efficiency. 

To improve air conditioning performance, 

perform the following operations:

●

Turn off eco air conditioning mode 

(



P.259)

●

Adjust the fan speed (



P.255)

●

Turn off Eco drive mode (



P.210)

■

Automatic deactivation of sport mode 

and custom mode (if equipped)

If the engine switch is turned off after driv-

ing in sport mode or custom mode, the 

drive mode will be changed to normal 

mode.

■

Driving mode pop-up display

When the driving mode is changed, the 

selected driving mode will be temporarily 

displayed on the Center Display. (Except 

for Normal mode)
For Custom mode, select “Settings” on the 

display to customize the driving mode.

■

Customization (vehicles with Adaptive 

Variable Suspension system)

Settings (e.g. custom mode) can be 

changed.
(Customizable features: 



P.404)

212

4-5. Using the driving support systems

*

: If  equipped

■

Intuitive parking assist

Ultrasonic sensors are used to detect 
static objects in the detection area 
when driving at a low speed or backing 
up. (



P.213)

■

RCTA (Rear Cross Traffic Alert) 
function

Rear side radar sensors are used to 
detect approaching vehicles in the 
detection areas behind the vehicle 
when backing up. (



P.221)

■

RCD (Rear Camera Detection) 
function (if equipped)

A rear camera sensor is used to detect 
pedestrians in the detection area 
behind the vehicle when backing up. 
(



P.227)

■

Adjusting the buzzer volume

The buzzer volume can be adjusted on 
the multi-information display. The vol-
ume of buzzers for the intuitive parking 
assist, RCTA function and RCD func-
tion will be adjusted simultaneously.
Use the meter control switches to 
change settings. (



P.77)

1

Press 

 or 

 to select 

.

2

Press 

 or 

 to select “PKSA” 

and then press “OK”.

3

Press 

 or 

 to select 

 and 

then press “OK”.

Each time the switch is pressed, the vol-

ume level will change between 1, 2, and 3.

■

Muting a buzzer temporarily

A mute button will be displayed on the 
multi-information display or Center 
Display (vehicles with 12.3-inch Cen-
ter Display and Lexus parking assist 
monitor) when an object or pedestrian 
is detected. To mute the buzzer, press 
“OK” or 

.

The buzzers for the intuitive parking 
assist, RCTA function and RCD func-
tion will be muted simultaneously.
Mute will be automatically canceled in 
the following situations:



When the shift position is changed.



When there is a malfunction in a 
sensor or the system is temporarily 
unavailable.



When the function is disabled while 
it is operating.

PKSA (Parking Support 
Alert)

*

The Parking Support Alert system 
consists of the following functions 
that operate when driving at a low 
speed or backing up, such as when 
parking. When the system deter-
mines that the possibility of a colli-
sion with a detected object, such as 
a wall, or pedestrian is high, a warn-
ing operates to urge the driver to 
take evasive action.

PKSA (Parking Support Alert) 
system

Setting the buzzer volume