Lexus RX (2023 year). Manual in english

317

4-5. Using the driving support systems

Driving



Speed limit with supplemental mark

: Displayed simultaneously with a speed

limit sign.

: Content not recognized.



Depending on the specifications of
the vehicle, signs may be displayed
overlapping.

The following settings of the RSA can
be changed through customize set-
tings. (



P.623)

Ice

Supplemental mark
exists

Exit ramp on right

Exit ramp on left

Time

Duplicate display example

Changing RSA settings

Dynamic radar cruise con-
trol

This dynamic radar cruise control
detects the presence of vehicles
ahead, determines the current
vehicle-to-vehicle distance, and
operates to maintain a suitable dis-
tance from the vehicle ahead. The
desired vehicle-to-vehicle distance
can be set by operating the vehi-
cle-to-vehicle distance switch.

Use the dynamic radar cruise con-
trol only on highways and express-
ways.

WARNING

■

For safe use

●

Driving safely is solely the responsibil-

ity of the driver. Do not overly rely on

this system, and pay careful attention

to the surrounding conditions in order

to ensure safe driving.

●

The dynamic radar cruise control pro-

vides driving assistance to reduce the

driver’s burden. However, there are

limitations to the assistance provided.

Read the following items carefully. Do

not overly rely on this system and always

drive carefully.
• Conditions under which the system

may not operate correctly:



P.325

●

Set the speed appropriately according

to the speed limit, traffic flow, road

conditions, weather conditions, etc.

The driver is responsible for confirm-

ing the set speed.

318

4-5. Using the driving support systems

WARNING

●

Even if the system is operating cor-

rectly, the condition of a preceding

vehicle as recognized by the driver

and detected by the system may differ.

Therefore, it is necessary for the driver

to pay attention, assess risks, and

ensure safety. Over-reliance on this

system to drive the vehicle safely may

lead to an accident resulting in death

or serious injury.

■

Precautions for the driving assist sys-

tems

Observe the following precautions, as

there are limitations to the assistance

provided by the system. Over-reliance

on this system may lead to an accident

resulting in death or serious injury.

●

Details of support provided for the

driver’s vision

The dynamic radar cruise control is only

intended to help the driver in determin-

ing the distance between the driver’s own

vehicle and a designated preceding vehi-

cle. It is not a system which allows for

careless or inattentive driving, and is not

a system which assists in poor visibility

conditions.
The driver must pay attention to their

surroundings,even when the vehicle

stops.

●

Details of support provided for the

driver’s judgement

The dynamic radar cruise control deter-

mines whether the distance between the

driver’s own vehicle and a designated

preceding vehicle 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 vigi-

lant and to determine whether or not

there is a possibility of danger.

●

Details of support provided for the

driver’s operation

The dynamic radar cruise control 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 safety.

■

Situations in which the dynamic radar

cruise control should not be used

Do not use the dynamic radar cruise

control in the following situations. As the

system will not be able to provide appro-

priate control, using it may lead to an

accident resulting in death or serious

injury.

●

Roads where there are pedestrians,

cyclists, etc.

●

When driving on a highway or

expressway entrance or exit

●

When the approach warning sounds

frequently

●

Situations in which the sensors may not

operate properly:



P.324

●

Situations in which the lane may not be

detected:



P.276

319

4-5. Using the driving support systems

Driving

Constant speed cruising:
When there are no vehicles ahead

The vehicle drives at the speed set by the driver.
If the set vehicle speed is exceeded while driving down a hill, the set vehicle speed display
will blink and a buzzer will sound.

Deceleration and follow-up cruising:
When a preceding vehicle driving slower than the set vehicle speed is detected

When a vehicle is detected driving ahead of your vehicle, the vehicle automatically decel-
erates and if a greater reduction in vehicle speed is necessary, the brakes are applied (the
stop lights will come on at this time). The vehicle is controlled to maintain the vehi-
cle-to-vehicle distance set by the driver, in accordance with changes in the speed of the
preceding vehicle. If vehicle deceleration is not sufficient and the vehicle approaches the
vehicle ahead, the approach warning will sound.

Acceleration:
When there are no longer any preceding vehicles driving slower than the set
vehicle speed

The vehicle accelerates until the set vehicle speed is reached and then resumes constant
speed cruising.

Starting off:

If a preceding vehicle stops, the vehicle will also stop (controlled stop). After the preceding

Basic functions

320

4-5. Using the driving support systems

vehicle starts off, pressing the “RES” switch or depressing the accelerator pedal will resume
follow-up cruising (start off operation). If a start off operation is not performed, the con-
trolled stop will continue.
Vehicles with a driver monitor and LCA: While driving on a highway or expressway, if a
preceding vehicle stops, your vehicle will stop accordingly. On some highways and
expressways, if the system determines that the preceding vehicle starts off within approxi-
mately 3 minutes of stopping, a buzzer will sound and a message will be displayed on the
multi-information display to notify the driver, and your vehicle will start off accordingly fol-
lowing the preceding vehicle. (Extended resume time)

■

Meter display

Multi-information display
Set vehicle speed
Indicators

■

Switches



Vehicles without a head-up display

Driving assist mode select switch
Driving assist switch

“+” switch/“RES” switch
“-” switch
Cancel switch
Vehicle-to-vehicle distance switch



Vehicles with a head-up display

The function of each switch differs
depending on the conditions and
settings.

When a switch is touched, the function of
each switch is displayed on the head-up
display. If the head-up display is off, the
functions will be displayed on the

System components

A
B
C

A
B

C
D

E
F

321

4-5. Using the driving support systems

Driving

multi-information display.

Driving assist mode select switch
Driving assist switch
“RES” switch
“+” switch
“-” switch
Vehicle-to-vehicle distance switch
Cancel switch

Press the driving assist mode select
switch to select dynamic radar
cruise control.

The dynamic radar cruise control indicator

will illuminate.



Vehicles without a head-up display



Vehicles with a head-up display

Using the accelerator pedal, accel-
erate or decelerate to the desired
vehicle speed (approximately 30
km/h [20 mph] or more), and press
the driving assist switch to set the
set vehicle speed.

The set vehicle speed will be displayed on

the multi-information display.
The vehicle speed at the moment the

switch is released will be the set vehicle

speed.



Vehicles without a head-up display

Using the dynamic radar cruise
control

Setting the vehicle speed

B
C
D

E
F

322

4-5. Using the driving support systems



Vehicles with a head-up display



Adjusting the set vehicle speed
using the switches

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



Vehicles without a head-up display

Increase set vehicle speed

Decrease set vehicle speed



Vehicles with a head-up display

Increase set vehicle speed

Decrease set vehicle speed

Short press adjustment: Press the switch
Long press adjustment: Press and hold the
switch until the desired set vehicle speed is
reached.

The set vehicle speed will increase or
decrease as follows:

Short press adjustment: By 1 km/h (0.6
mph) or 1 mph (1.6 km/h) each time the
switch is pressed
Long press adjustment: Increases or
decreases in 5 km/h (3.1 mph) or 5 mph (8
km/h) increments continuously while the
switch is pressed and held
The set vehicle speed adjustment incre-
ment can be changed through a customize
setting.



Increasing the set vehicle speed
using the accelerator pedal

Depress the accelerator pedal to
accelerate the vehicle to the
desired vehicle speed.

Press the “+” switch.

Adjusting the set vehicle speed

323

4-5. Using the driving support systems

Driving



Vehicles without a head-up display



Vehicles with a head-up display

Press the cancel switch or driving
assist switch to cancel control.

Control will also be canceled if the brake

pedal is depressed.
(If the vehicle has been stopped by system

control, depressing the brake pedal will not

cancel control.)

Press the “RES” switch to resume
control.

Each time the switch is pressed, the
vehicle-to-vehicle distance setting will
change as follows:

If a preceding vehicle is detected, the
preceding vehicle mark will be displayed.



Vehicles without a head-up display



Vehicles with a head-up display

The actual vehicle-to-vehicle distance var-
ies in accordance with the vehicle speed.

Canceling/resuming control

Changing the vehicle-to-vehicle
distance

Illus-

tration

Num-

ber

Vehi-

cle-to-vehicle

distance

Approximate Dis-

tance (Vehicle

Speed: 100 km/h

[60 mph])

Short

Approximately 25

m (85 ft.)

Medium

Approximately 30

m (100 ft.)

Long

Approximately 45

m (145 ft.)

Extra long

Approximately 60

m (200 ft.)

324

4-5. Using the driving support systems

Also, when the vehicle is stopped by sys-
tem control, it will be stopped at a certain
distance from the preceding vehicle,
depending on the situation, regardless of
the setting.

■

Operating conditions

●

The shift position is in D.

●

The desired set speed can be set when

the vehicle speed is approximately 30

km/h (20 mph) or more.

• If the vehicle speed is set while driving at

below approximately 30 km/h (20 mph),

the set vehicle speed will be approxi-

mately 30 km/h (20 mph).

• If the vehicle speed is set while driving at

a speed that exceeds the system’s upper

limit, the set vehicle speed will be the sys-

tem’s upper limit.

■

Accelerating after setting the vehicle

speed

As with normal driving, acceleration can be

performed by depressing the accelerator

pedal. After accelerating, the vehicle will

return to the set vehicle speed. However,

while in vehicle-to-vehicle distance control

mode, the vehicle speed may decrease to

below the set vehicle speed in order to

maintain the distance from the preceding

vehicle.

■

When the vehicle is stopped by system

control during follow-up cruising

●

When the “RES” switch is pressed while

the vehicle is stopped by system control,

if the preceding vehicle starts off within

approximately 3 seconds, follow-up

cruising will resume.

●

If the preceding vehicle starts off within

approximately 3 seconds of the vehicle

being stopped by system control, fol-

low-up cruising will resume.

■

Automatic cancellation of vehi-

cle-to-vehicle distance control mode

In the following situations, vehicle-to-vehi-

cle distance control mode will be canceled

automatically:

●

When the brake control or output restric-

tion control of a driving support system

operates

(For example: Pre-Collision System,

drive-start control)

●

When the parking brake has been oper-

ated

●

When the vehicle is stopped by system

control on a steep incline

●

When any of the following are detected

while the vehicle is stopped by system

control:

• The driver’s seat belt is unfastened

• The driver’s door is opened

• Approximately 3 minutes have elapsed

since the vehicle was stopped

The parking brake may be actived automat-

ically.

●

Situations in which some or all of the

functions of the system cannot operate:



P.276

■

Dynamic radar cruise control system

warning messages and buzzers

For safe use:



P.270

■

Preceding vehicles that the sensor may

not detect correctly

In the following situations, depending on the

conditions, if the system cannot provide suf-

ficient deceleration or acceleration is nec-

essary, operate the brake pedal or

accelerator pedal.
As the sensor may not be able to correctly

detect these types of vehicles, the approach

warning (



P.325) may not operate.

●

When a vehicle cuts in front of your vehi-

cle or changes lanes away from your

vehicle extremely slowly or quickly

●

When changing lanes

●

When a preceding vehicle is driving at a

low speed

●

When a vehicle is stopped in the same

lane as the vehicle

●

When a motorcycle is traveling in the

same lane as the vehicle

325

4-5. Using the driving support systems

Driving

■

Conditions under which the system may

not operate correctly

In the following situations, operate the

brake pedal (or accelerator pedal, depend-

ing on the situation) as necessary.
As the sensor may not be able to correctly

detect a vehicle, the system may not oper-

ate properly.

●

When a preceding vehicle brakes sud-

denly

●

When changing lanes at low speeds, such

as in a traffic jam

■

Conditions for extended resume time

(vehicles with a driver monitor and

LCA)

Extended resume time is activated when all

of the following conditions are satisfied:

●

Vehicles with a display audio: The con-

nected service that Lexus provides is

subscribed to. Contact your any author-

ized Lexus retailer or Lexus authorized

repairer, or any reliable repairer.

●

The vehicle is driving on a vehicle-only

road, such as an expressway.

●

There is a preceding vehicle and the sys-

tem is able to detect it.

●

No vehicle interruptions occur.

●

The preceding vehicle has not been

replaced.

●

Clearance sonar and FCTA are not

detecting the object in front of you.

●

The driver monitor judges that the driver

is looking forward.

●

The steering wheel has not been oper-

ated.

●

The brake pedal has not been operated.

In situations where the vehicle
approaches a preceding vehicle and
the system cannot provide sufficient
deceleration, such as if a vehicle cuts in
front of the vehicle, a warning display

will flash and a buzzer will sound to
alert the driver. Depress the brake
pedal to ensure appropriate vehi-
cle-to-vehicle distance.

■

Warnings may not occur when

In the following situations, the warning
may not operate even though the vehi-
cle-to-vehicle distance is short.



When the preceding vehicle is
traveling at the same speed or faster
than your vehicle



When the preceding vehicle is
traveling at an extremely low speed



Immediately after the vehicle speed
has been set



When the accelerator pedal is
depressed

When a curve is detected, the vehicle
speed will begin being reduced. When
the curve ends, the vehicle speed
reduction will end.

Depending on the situation, the vehicle
speed will then return to the set vehicle
speed.
In situations where vehicle-to-vehicle dis-
tance control needs to operate, such as
when a preceding vehicle cuts in front of
your vehicle, the curve speed reduction
function will be canceled.

Approach warning

Curve speed reduction function

326

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

If a detected vehicle in the passing lane
is traveling slower than your vehicle,
overtaking will be suppressed.

The overtaking prevention function will not
operate if the passing lane is congested or
vehicles are traveling at low speeds.
This function is not available for vehicles
without a DCM.

While a warning of the driver monitor
is being displayed, the vehicle acceler-
ation will be restrained.
When the warning of the driver moni-
tor disappears, the restrained acceler-
ation control will end.

If your vehicle is being driven at
approximately 80 km/h (50 mph) or
more and a lane change to the passing
lane is performed, when the turn signal
lever is operated and the lane is
changed, the vehicle will accelerate up
to the set speed to assist in overtaking.

For vehicles with a DCM: The system’s rec-
ognition of which lane is the passing lane is
determined by location information and
the driving condition of surrounding vehi-
cles. The support for lane change function
and overtaking prevention function may
not operate if it is difficult to obtain location
information or there are few surrounding
vehicles.
For vehicles without a DCM: The system’s
recognition of which lane is the passing
lane may be based solely on the location of
the steering wheel in the vehicle (left-hand
drive/right-hand drive). If the vehicle is
driven in a location where the passing lane
is on the opposite side of that where the
vehicle was originally sold, the vehicle may
accelerate when the turn signal lever is
operated away from the passing lane. (e.g.
The vehicle was manufactured for a
right-hand traffic location, but is being
driven in a left-hand traffic location. The
vehicle may accelerate when the turn sig-
nal lever is operated to the right.)

If your vehicle is being driven at
approximately 80 km/h (50 mph) or
more and the lane is changed to that
with a vehicle traveling slower than
your vehicle, when the turn signal lever
is operated the vehicle will gradually
decelerate to assist in changing lanes.

Overtaking prevention function

Driver Monitor support function
(if equipped)

Support for lane change

328

4-5. Using the driving support systems



Vehicles with a head-up display

Press and hold the “-” switch.

■

The dynamic radar cruise control with

road sign assist may not operate prop-

erly when

As the dynamic radar cruise control with

road sign assist may not operate properly in

situations where the RSA may not operate

or cannot detect signs correctly (



P.314),

when using this function, make sure to con-

firm the actual speed limit.
In the following situations, the set speed

may not change to the detected speed limit

by pressing and holding the “+” switch or “-”

switch:

●

When speed limit information is not avail-

able

●

When the detected speed limit is the

same as the set speed

●

When the detected speed limit is outside

of the speed range which the dynamic

radar cruise control system can operate



The settings of Dynamic radar
cruise control can be changed
through customize settings.
(



P.623)

The operating state of Dynamic radar cruise control is indicated.

Changing Dynamic radar cruise
control settings

Display and system operation state

329

4-5. Using the driving support systems

Driving

Indicator

Multi-information display

Situation

White

Vehi-

cle-to-vehicle

distance set-

ting: Grey

Dynamic radar

cruise control

being OFF

Green

Vehi-

cle-to-vehicle

distance set-

ting: Blue

Set vehicle

speed: Green

Constant

speed cruising

Green

Vehi-

cle-to-vehicle

distance set-

ting: Blue

Set vehicle

speed: Green

Preceding

vehicle: White

Follow-up

cruising

Green

Vehi-

cle-to-vehicle

distance set-

ting: Orange

flashing

Set vehicle

speed: Green

Preceding

vehicle:

Orange flash-

ing

Approach

warning

331

4-5. Using the driving support systems

Driving

■

Meter display

Set vehicle speed
Cruise control indicator

■

Switches



Vehicles without a head-up display

Driving assist mode select switch
Driving assist switch
“+” switch/“RES” switch
“-” switch
Cancel switch

Cruise control

The vehicle can be driven at a set
speed even if the accelerator pedal
is not depressed.

Use the cruise control only on high-
ways and expressways.

WARNING

■

For safe use

●

Driving safely is solely the responsibil-

ity of the driver. Therefore, do not

overly rely on this system. The driver is

solely responsible for paying attention

to the vehicle’s surroundings and driv-

ing safely.

●

Set the speed appropriately according

to the speed limit, traffic flow, road

conditions, weather conditions, etc.

The driver is responsible for confirm-

ing the set speed.

■

Situations in which cruise control

should not be used

Do not use the cruise control in the fol-

lowing situations. As the system will not

be able to provide appropriate control,

using it may lead to an accident resulting

in death or serious injury.

●

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.

●

When it is necessary to disable the sys-

tem:



P.270

System Components

A
B

A
B
C
D

332

4-5. Using the driving support systems



Vehicles with a head-up display

The function of each switch differs
depending on the conditions and
settings.

When a switch is touched, the function of
each switch is displayed on the head-up
display. If the head-up display is off, the
functions will be displayed on the
multi-information display.

Driving assist mode select switch
Driving assist switch
“RES” switch
“+” switch
“-” switch
Cancel switch

Press the driving assist mode select
switch to select cruise control.

The cruise control indicator will illuminate.



Vehicles without a head-up display



Vehicles with a head-up display

Using the accelerator pedal, accel-
erate to the desired vehicle speed
(approximately 30 km/h [20 mph]
or more), and press the driving
assist switch to set the set vehicle
speed.

The vehicle speed at the moment the

switch is released will be the set vehicle

speed.

B
C
D

E
F

Using the cruise control

Setting the vehicle speed

333

4-5. Using the driving support systems

Driving



Vehicles without a head-up display



Vehicles with a head-up display



Adjusting the set vehicle speed
using the switches

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



Vehicles without a head-up display

Increase set vehicle speed

Decrease set vehicle speed



Vehicles with a head-up display

Increase set vehicle speed

Decrease set vehicle speed

The set vehicle speed will increase or
decrease as follows:

Fine adjustment: By 1 km/h (0.6 mph) or 1
mph (1.6 km/h) each time the switch is
pressed
Large adjustment: Increases continuously
while the switch is pressed and held



Increasing the set vehicle speed
using the accelerator pedal

Depress the accelerator pedal to
accelerate the vehicle to the
desired vehicle speed.

Press the “+” switch.



Vehicles without a head-up display

Adjusting the set vehicle speed

Canceling/resuming control

334

4-5. Using the driving support systems



Vehicles with a head-up display

Press the cancel switch or driving
assist switch to cancel control.

Control will also be canceled if the brake

pedal is depressed.

Press the “RES” switch to resume
control.

■

Automatic cancellation of the cruise

control

In the following situations, the cruise control

will be canceled automatically:

●

When the vehicle speed drops approxi-

mately 16 km/h (10 mph) or more below

the set vehicle speed

●

When the vehicle speed drops below

approximately 30 km/h (20 mph)

●

When the brake control or output restric-

tion control of a driving support system

operates

(For example: PCS, drive-start control)

●

When the parking brake has been oper-

ated

●

Situations in which some or all of the

functions of the system cannot operate:



P.276

The operating state of cruise control is indicated.

Display and system operation state

Indicator

Multi-information display

Situation

White

Blank

Cruise control

being OFF

336

4-5. Using the driving support systems

: If equipped

■

Meter display

Set vehicle speed
Speed limiter indicator

■

Switches



Vehicles without a head-up display

Driving assist mode select switch
Driving assist switch
“+” switch/“RES” switch
“-” switch
Cancel switch



Vehicles with a head-up display

The function of each switch differs
depending on the conditions and
settings.

Speed limiter

A desired maximum speed can be
set using the speed limiter switch.
The speed limiter prevents the vehi-
cle speed from exceeding the set
speed.

WARNING

■

Situations in which speed limiter

should not be used

●

Situations in which the sensors may not

operate properly:



P.275

●

When it is necessary to disable the sys-

tem:



P.276

System Components

A
B

A
B
C
D

337

4-5. Using the driving support systems

Driving

When a switch is touched, the function of
each switch is displayed on the head-up
display. If the head-up display is off, the
functions will be displayed on the
multi-information display.

Driving assist mode select switch
Driving assist switch
“RES” switch
“+” switch
“-” switch
Cancel switch

Press the driving assist mode select
switch to select the speed limiter.

The speed limiter indicator will illuminate in

white.



Vehicles without a head-up display



Vehicles with a head-up display

Accelerate or decelerate to the
desired vehicle speed, and press
the driving assist switch to set the
maximum vehicle speed.

The speed limiter indicator will change

from illuminated in white to green.
The set vehicle speed will be displayed on

the multi-information display in green.

If the vehicle speed is set while driving at

below approximately 30 km/h (20 mph),

the set vehicle speed will be set to approxi-

mately 30 km/h (20 mph).
Press the cancel switch or driving assist

switch to cancel control.



Vehicles without a head-up display

Using the speed limiter

Setting the maximum vehicle
speed

B
C
D

E
F

338

4-5. Using the driving support systems



Vehicles with a head-up display

The system does not start when the shift

lever is R.
The system does not start when the driving

assist switch is pressed continuously.

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



Vehicles without a head-up display

Increase set vehicle speed

Decrease set vehicle speed



Vehicles with a head-up display

Increase set vehicle speed

Decrease set vehicle speed

Short press adjustment: Press the switch
Long press adjustment: Press and hold the
switch until the desired set vehicle speed is
reached.
The set vehicle speed will increase or
decrease as follows:
Short press adjustment: By 1 km/h (0.6
mph) or 1 mph (1.6 km/h) each time the
switch is pressed
Long press adjustment: Increases or
decreases in 5 km/h (3.1 mph) or 5 mph (8
km/h) increments continuously while the
switch is pressed and held
The set vehicle speed adjustment incre-
ment can be changed through a customize
setting.

Adjusting the set vehicle speed

339

4-5. Using the driving support systems

Driving



Vehicles without a head-up display



Vehicles with a head-up display

Press the cancel switch or driving
assist switch to cancel control.

Press the “RES” switch to resume
control.

When control is canceled, the speed lim-

iter indicator will change from illuminated

in green to white.

■

Exceeding the set speed

In the following situations, if the vehicle

speed exceeds the set vehicle speed, the

displayed set vehicle speed will flash:

●

When the accelerator pedal is deeply

depressed

●

When driving down a slope

■

Automatic cancellation of the speed

limiter

●

Situations in which some or all of the

functions of the system cannot operate:



P.276

■

Changes in brake operation sound and

pedal response



P.276

When RSA function is enabled and the
speed limiter is operating, if a speed
limit sign is detected, the detected
speed limit will be displayed with an
up/down arrow. The set vehicle speed
can be increased/reduced to the
detected speed limit by pressing and
holding the “+” switch or “-” switch.

■

When the set vehicle speed is
lower than the detected speed limit



Vehicles without a head-up display

Press and hold the “+” switch.

Canceling/resuming control

Speed limiter with Road Sign
Assist

340

4-5. Using the driving support systems



Vehicles with a head-up display

Press and hold the “+” switch.

■

When the set vehicle speed is
higher than the detected speed
limit



Vehicles without a head-up display

Press and hold the “-” switch.



Vehicles with a head-up display

Press and hold the “-” switch.

■

The speed limiter with road sign assist

may not operate properly when

As the speed limiter with road sign assist

may not operate properly in situations

where the RSA may not operate or cannot

detect signs correctly (



P.314), when

using this function, make sure to confirm the

actual speed limit.
In the following situations, the set speed

may not change to the detected speed limit

by pressing and holding the “+” switch or “-”

switch:

●

When the detected speed limit is the

same as the set speed

●

When the detected speed limit is outside

of the speed range which the speed lim-

iter system can operate

341

4-5. Using the driving support systems

Driving

: If equipped

Operation of this system is separated
into 4 control states. Through control
state “Warning phase 1” and “Warning
phase 2”, the system determines if the
driver is aware and responsive while

Emergency Driving Stop
System

The emergency driving stop system
is a system which automatically
decelerates and stops the vehicle
within its lane if the driver becomes
unable to continue driving the vehi-
cle, such as if they have suffered a
medical emergency, etc.

During LTA (Lane Tracing Assist)
control, if the system does not
detect driving operations, such as if
the driver is not holding the steer-
ing wheel, and determines the
driver is not responsive, the vehicle
will be decelerated and stopped
within its current lane to help avoid
a collision or reduce the impact of a
collision.

WARNING

■

For safe use

●

Driving safely is solely the responsibil-

ity of the driver. Pay careful attention to

the surrounding conditions in order to

ensure safe driving. The emergency

driving stop system is designed to pro-

vide support in an emergency where it

is difficult for the driver to continue

driving, such as if they have had a med-

ical emergency. It is not designed to

support driving while drowsy or in

poor physical health, or inattentive

driving.

●

Although the emergency driving stop

system is designed to decelerate the

vehicle within its lane to help avoid or

help reduce the impact of a collision if

the system determines that it is difficult

for the driver to continue driving, its

effectiveness may change according

to various conditions. Therefore, it may

not always be able to achieve the same

level of performance. Also, if the oper-

ating conditions are not met, this func-

tion will not operate.

●

After the emergency driving stop sys-

tem operates, if driving becomes pos-

sible again, immediately begin driving

again or, if necessary, park the vehicle

on the shoulder of the road and set a

warning reflector and flare to warn

other drivers of your stopped vehicle.

●

After this system operates, passengers

should attend to the driver as neces-

sary and take appropriate hazard pre-

vention measures, such as moving to a

place where safety can be ensured,

such as the shoulder of the road or

behind a guardrail.

●

This system detects the condition of

the driver through the operation of the

steering wheel. This system may oper-

ate if the driver is aware but intention-

ally and continuously does not operate

the vehicle. Also, the system may not

operate if it cannot determine that the

driver is not responsive, such as if they

are leaning on the steering wheel.

●

Situations in which the driver monitor

may not operate properly (vehicles

with a driver monitor):



P.277

Summary of the system

342

4-5. Using the driving support systems

outputting a warning and controlling
the vehicle speed. If the system deter-
mines the driver is not responsive, it will
operate in control state “Deceleration
stop phase” and “Stop hold phase” and
decelerate and stop the vehicle. It will
then operate continuously in “Stop
hold phase”.

■

Operating conditions

This system operates when all of the follow-

ing conditions are met:

●

When the LTA is on

●

When the vehicle speed is approximately

50 km/h (30 mph) or more

■

Operation cancelation conditions

In the following situations, system operation

will be canceled:

●

When LTA control has been canceled

(the LTA switch has been pressed, etc.)

●

When the dynamic radar cruise control

has been canceled

●

When driver operations are detected

(the steering wheel is held, the brake

pedal, accelerator pedal, parking brake,

hazard light switch, or turn signal lever is

operated)

●

When the driving assist switch is pressed

while in the stop and hold phase

●

When the power switch has been turned

from ON to off

●

Situations in which some or all of the

functions of the system cannot operate:



P.276

■

LTA control when operation is canceled

When emergency driving stop system

operation is canceled, LTA control may also

be canceled.

If driving operations are not detected
after the hands off steering wheel

warning operates, a buzzer will sound
intermittently and a message will be
displayed to warn the driver, and the
system will judge if the driver is respon-
sive or not. If driving operations, such
as holding the steering wheel, are not
performed within a certain amount of
time, the system will enter warning
phase 2.
Vehicles with a driver monitor camera:
Depending on the type of detection of
the driver’s unresponsiveness, the sys-
tem may skip warning phase 1 and start
the control of warning phase 2.

After entering warning phase 2, a
buzzer will sound in short intervals and
a message will be displayed to warn the
driver, and the vehicle will slowly
decelerate. If driving operations, such
as holding the steering wheel, are not
performed within a certain amount of
time, the system will determine that the
driver is not responsive and enter the
deceleration stop phase.

The audio system will be muted until the
driver becomes responsive.
When the vehicle is decelerating, the
brake lights may illuminate, depending on
the road conditions, etc.
After the vehicle has decelerated a certain
amount, the emergency flashers (hazard
lights) will flash.

After the driver is judged as being not

Warning phase 1

Warning phase 2

Deceleration stop phase

343

4-5. Using the driving support systems

Driving

responsive, a buzzer will sound contin-
uously and a message will be displayed
to warn the driver, and the vehicle will
slowly decelerate and stop. While the
vehicle is decelerating, the emergency
flashers (hazard lights) will flash to
warn other drivers of the emergency.

After the vehicle is stopped, the park-
ing brake will be applied automatically.
After entering the stop and hold phase,
the buzzer will continue sounding con-
tinuously, the emergency flashers (haz-
ard lights) will flash to warn other
drivers of the emergency, and the
doors will unlock.

■

Restricted functions after the operation

is canceled

After shifting to the deceleration stop

phase, the following functions will not be

available until the hybrid system is

re-started even though the emergency driv-

ing stop system is canceled:

●

LTA

●

LCA (if equipped)

: If equipped

Stop hold phase

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 sys-

tem

●

The driver is solely responsible for safe

driving. Always drive safely, taking

care to observe your surroundings.

●

The Blind Spot Monitor is a supple-

mentary function which alerts the

driver that a vehicle is in a blind spot of

the outside rear view mirrors or is

approaching rapidly 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 cor-

rectly under certain conditions, the

driver’s own visual confirmation of

safety is necessary.

System components

344

4-5. Using the driving support systems

Center display

Turning the Blind Spot Monitor on/off.

Outside rear view mirror indica-
tors/buzzer

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 and a
buzzer will sound.

Driving assist information indicator

Illuminates when the Blind Spot Monitor is
turned off. At this time, “Blind Spot Monitor
OFF” will be displayed on the multi-infor-
mation display.

■

Outside rear view mirror indicator visi-

bility

In strong sunlight, the outside rear view mir-

ror indicator may be difficult to see.

■

Buzzer

If the volume setting of the audio system is

high or the surrounding area is loud, it may

be difficult to hear the buzzer.

■

Customization

Some functions can be customized.

(



P.623)

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 operate 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 will be
displayed. In this situation, clear off the
dirt or snow and drive the vehicle with
the operation conditions of the BSM
function (



P.346) satisfied for approxi-

mately 10 minutes. If the warning mes-
sage does not disappear, have the
vehicle inspected by any authorized
Lexus retailer or Lexus authorized
repairer, or any reliable repairer.

●

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 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 any author-

ized Lexus retailer or Lexus authorized

repairer, or any reliable repairer.

• 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.

345

4-5. Using the driving support systems

Driving

The blind spot monitor can be ena-
bled/disabled on

of the center dis-

play. (



P.623)

When the Blind Spot Monitor is off, the
driving assist information indicator
(



P.110) will illuminate. At this time,

“Blind Spot Monitor OFF” will be dis-
played on the multi-information dis-
play.
Each time the power switch is turned to
ON, the Blind Spot Monitor is enabled.

■

Objects that can be detected while driving

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)

■

Detection range while driving

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

WARNING

●

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 any authorized Lexus retailer

or Lexus authorized repairer, or any

reliable repairer.

●

The sensors are likely to be affected by

paint on the rear bumper. If the rear

bumper is not repaired correctly, the

Blind Spot Monitor may not operate

with a warning message displayed. If

any paint repair is needed, contact any

authorized Lexus retailer or Lexus

authorized repairer, or any reliable

repairer.

Turning the Blind Spot Monitor
on/off

Blind Spot Monitor operation

346

4-5. Using the driving support systems

The range of each detection area is:

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

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

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

Approximately 3 m (9.8 ft.) to 70 m (230 ft.) from the rear bumper

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

cannot be detected.

: While the vehicle is to being overtaken, up to approximately 3 m (9.8 ft.) forward of the

rear bumper will be detected.

: 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 linked
function

The LDA (Lane Departure Alert) has a
function that uses information of
detected vehicles driving in an adja-
cent lane. For details about the function
and its operating conditions, P.301

■

The Blind Spot Monitor is operational

when

The Blind Spot Monitor is operational when

all of the following conditions are met:

●

The power switch is in ON.

●

The Blind Spot Monitor is on.

●

The shift position is in a position other

than R.

●

The vehicle speed is greater than approx-

imately 10 km/h (7 mph).

■

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 an adjacent lane

slowly.

●

Another vehicle enters the detection

area when it changes lanes.

■

Situations in which the blind spot moni-

tor cannot detect vehicles.

The blind spot monitor cannot detect the

following vehicles and other objects:

●

Small motorcycles, bicycles, pedestrians,
etc.

A
B
C
D

347

4-5. Using the driving support systems

Driving

●

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.

■

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 vehi-

cle 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) is installed to the rear of the vehi-

cle

• 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

• When towing with the vehicle

●

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) is installed to the rear of the vehi-

cle

• When towing with the vehicle

348

4-5. Using the driving support systems

: If equipped

The rear side radar sensors detect fol-
lowing vehicles driving in the same
lane. If the system determines that the

possibility of a rear-end collision is
high, the emergency flashers will flash
rapidly to warn the driver of the follow-
ing vehicle. Simultaneously, a message
will be displayed on the multi-informa-
tion display to notify the driver of the
approach of the following vehicle.

■

Operating conditions of Automatic

Rear Flashing Hazard Lights

When the following conditions are met, the

Automatic Rear Flashing Hazard Lights will

operate:

●

The power switch is in ON.

●

The shift position is in a position other

than R.

●

The turn signal lever is not being oper-

ated.

●

The relative speed between your vehicle

and the following vehicle is between

approximately 30 and 100 km/h (19 and

62 mph)

●

Your vehicle is being driven at approxi-

mately 10 km/h (7 mph) or less or at any

speed with the brake pedal depressed.

Automatic Rear Flashing
Hazard Lights

The Automatic Rear Flashing Haz-
ard Lights is a system that uses the
rear side radar sensors located on
the inside of the rear bumper.
When the system determines that
the possibility of a rear-end collision
is high, it flashes the emergency
flashers rapidly to warn the driver of
the following vehicle.

WARNING

■

Cautions regarding the use of the sys-

tem

The driver is solely responsible for safe

driving. Always drive safely, taking care

to observe your surroundings. The Auto-

matic Rear Flashing Hazard Lights is an

auxiliary system that flashes the emer-

gency flashers rapidly to warn the driver

of the following vehicle when it deter-

mines that the possibility of a rear-end

collision is high. As this system may not

function to its fullest extent in certain situ-

ations, the driver’s own visual confirma-

tion of safety is necessary. Over reliance

on this function may lead to an accident

resulting death or serious injury.

■

To ensure the system can operate

properly



P.344

Automatic Rear Flashing Hazard
Lights operation

Lexus RX (2023 year). Manual in english - page 10