Lexus RX350h (2023 year). Manual in english

505

6-3. Do-it-yourself maintenance

Mai
nte

e a

are



Vehicles without single-beam head-
lights

Adjustment bolt A
Adjustment bolt B



Vehicles with single-beam head-
lights

Adjustment bolt A
Adjustment bolt B

Make sure the vehicle has a full
tank of gasoline and the area
around the headlight is not
deformed.

Park the vehicle on level ground.

Sit in the driver’s seat.

Bounce the vehicle several times.

Using a phillips-head screwdriver,
turn bolt A in either direction.

Remember the turning direction and the

number of turns.



Vehicles without single-beam head-
lights



Vehicles with single-beam head-
lights

Turn bolt B the same number of
turns and in the same direction as
step

If the headlight cannot be adjusted using

this procedure, take the vehicle to your

Lexus dealer to adjust the headlight aim.

Headlight aim

Vertical movement adjusting
bolts

Before checking the headlight
aim

A
B

Adjusting the headlight aim

507

6-3. Do-it-yourself maintenance

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are

■

Front

Front turn signal light (bulb type)

■

Replacing the following bulbs

If any of the lights listed below has
burnt out, have it replaced by your
Lexus dealer.



Headlight



Parking lights and daytime running
lights



Front turn signal lights (LED type)



Front side marker lights



Front fog lights



Cornering lights (if equipped)



Side turn signal lights



Stop/tail lights



Back-up lights



Rear turn signal light



Rear side marker lights



High mounted stoplight



License plate lights



Outer foot lights

■

LED Lights

The lights other than the front turn signal

lights (bulb type) each consist of a number

of LEDs. If any of the LEDs burn out, take

your vehicle to your Lexus dealer to have

the light replaced.

■

Condensation build-up on the inside of

the lens

Temporary condensation build-up on the

inside of the headlight lens does not indi-

cate a malfunction. Contact your Lexus

dealer for more information in the following

situations:

●

Large drops of water have built up on the

inside of the lens.

●

Water has built up inside the headlight.

■

When replacing light bulbs



P.504

■

Front turn signal lights (bulb type)

Turn the bulb base counterclock-
wise and remove it.

Bulb locations

Replacing light bulbs

508

6-3. Do-it-yourself maintenance

Remove the light bulb.

Install a new light bulb and then
install the bulb base to the light unit
by inserting it and turning it clock-
wise.

After installing the bulb base, wiggle it

lightly to make sure it is securely installed

and turn the lights on to visually check that

there is no light leaking from between the

bulb base and light unit.

WARNING

■

To prevent injury

Before performing any light bulb

replacement procedure, be sure to turn

the power switch off. Failure to do so may

result in burns from hot components or a

part of your body may get caught on an

operating component, possibly causing

serious injury.

■

Replacing light bulbs

●

Turn off the lights. Do not attempt to

replace the bulb immediately after

turning off the lights.

The bulbs become very hot and may

cause burns.

●

Do not touch the glass portion of the

light bulb with bare hands. When it is

unavoidable to hold the glass portion,

use and hold with a clean dry cloth to

avoid getting moisture and oils on the

bulb.

Also, if the bulb is scratched or

dropped, it may blow out or crack.

●

Fully install light bulbs and any parts

used to secure them. Failure to do so

may result in heat damage, fire, or

water entering the headlight unit. This

may damage the headlights or cause

condensation to build up on the lens.

●

Do not attempt to repair or disassem-

ble the light bulbs, connectors, electric

circuits or component parts.

Doing so may result in death or serious

injury due to electric shock.

■

To prevent damage or fire

●

Make sure bulbs are fully seated and

locked.

●

Check the wattage of the bulb before

installing to prevent heat damage.

509

When trouble

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When trouble arises

7-1. Essential information

Emergency flashers...................

510

If your vehicle has to be stopped in

an emergency...........................

510

If the vehicle is submerged or

water on the road is rising ....

511

7-2. Steps to take in an emergency

If your vehicle needs to be towed

.........................................................

513

If you think something is wrong

.........................................................

514

If a warning light turns on or a

warning buzzer sounds ........

516

If a warning message is displayed

........................................................

526

If you have a flat tire..................

539

If the hybrid system will not start

........................................................

547

If you lose your keys.................

548

If the electronic key does not

operate properly ....................

549

If a door cannot be opened using

the door opener switch.........

551

If the 12-volt battery is discharged

........................................................

553

If your vehicle overheats ........

560

If the vehicle becomes stuck

........................................................

565

510

7-1. Essential information

7-1.Essential information

Press the switch.

All the turn signal lights will flash. To turn
them off, press the switch once again.

■

Emergency flashers

●

If the emergency flashers are used for a

long time while the hybrid system is not

operating (while the “READY” indicator

is not illuminated), the 12-volt battery may

discharge.

●

If any of the SRS airbags deploy (inflate)

or in the event of a strong rear impact, the

emergency flashers will turn on automati-

cally.

The emergency flashers will turn off auto-

matically after operating for approxi-

mately 20 minutes. To manually turn the

emergency flashersoff, press the switch

twice. (The emergency flashers may not

turn on automatically depending on the

force of the impact and conditions of the

collision.)

Steadily step on the brake pedal
with both feet and firmly depress it.

Do not pump the brake pedal repeatedly

as this will increase the effort required to

slow the vehicle.

Shift the shift position to N.



If the shift position is shifted to N

After slowing down, stop the vehi-
cle in a safe place by the road.

Stop the hybrid system.



If the shift position cannot be shifted
to N

Keep depressing the brake pedal
with both feet to reduce vehicle
speed as much as possible.

To stop the hybrid system, press
and hold the power switch for 2
consecutive seconds or more, or

Emergency flashers

The emergency flashers are used to
warn other drivers when the vehicle
has to be stopped on the road due
to a breakdown, etc.

Operating instructions

If your vehicle has to be
stopped in an emergency

Only in an emergency, such as if it
becomes impossible to stop the
vehicle in the normal way, stop the
vehicle using the following proce-
dure:

Stopping the vehicle

511

7-1. Essential information

n t

ise

press it briefly 3 times or more in
succession.

Stop the vehicle in a safe place by
the road.



If the door can be opened, open the
door and exit the vehicle.



If the door can not be opened, open
the window using the power window
switch and ensure an escape route.



If the window can be opened, exit
the vehicle through the window.



If the door and window cannot be
opened due to the rising water,
remain calm, wait until the water
level inside the vehicle rises to the
point that the water pressure inside
of the vehicle equals the water pres-
sure outside of the vehicle and then
open the door after waiting for the
rising water to enter the vehicle, and
exit the vehicle. When the outside
water level exceeds half the height
of the door, the door cannot be
opened from the inside due to water
pressure.

■

Water level exceeds the floor

When the water level exceeds the floor and

time has passed, the electrical equipment

will get damaged, the power windows will

WARNING

■

If the hybrid system has to be turned

off while driving

Power assist for the steering wheel will

be lost, making the steering wheel

heavier to turn. Decelerate as much as

possible before turning off the hybrid sys-

tem.

If the vehicle is submerged
or water on the road is rising

This vehicle is not designed to be
able to drive on roads that are
deeply flooded with water. Do not
drive on roads where the roads may
be submerged or the water may be
rising. It is dangerous to remain in
the vehicle, if it anticipated that the
vehicle will be flooded or set a drift.
Remain calm and follow the follow-
ing.

512

7-1. Essential information

not operate, the engine and motor stop, and

the vehicle may not be able to get moving.

■

Using an emergency escape hammer

Laminated glass

is used in the windshield

and the windows on this vehicle.
Laminated glass cannot be shattered with
an emergency hammer

: Contact your Lexus dealer or aftermar-

ket accessory manufacturer for further
information about an emergency ham-
mer.

: If equipped

■

How to distinguish laminated glass

When looking from the cross-sectional

view point, laminated glass is two sheets of

glass pasted together.

Laminated glass
Tempered glass

WARNING

■

Caution while driving

Do not drive on roads where the roads

may be submerged or the water may be

rising. Otherwise the vehicle may be

damaged and cannot move, as well as

become flooded and set a drift, which

may lead to death.

A
B

513

7-2. Steps to take in an emergency

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ise

7-2.Steps to take in an emergency



From the front

Use a towing dolly under the rear
wheels.



From the rear

Use a towing dolly under the front
wheels.

If your vehicle needs to be
towed

If towing is necessary, we recom-
mend having your vehicle towed by
your Lexus dealer or commercial
towing service, using a wheel-lift
type truck or flatbed truck.

Use a safety chain system for all
towing, and abide by all state/pro-
vincial and local laws.

Towing with a wheel-lift type
truck

WARNING

Observe the following precautions. Fail-

ure to do so may result in death or seri-

ous injury.

■

When towing the vehicle

Be sure to transport the vehicle with all

four wheels raised off the ground. If the

vehicle is towed with the tires contacting

the ground, the drivetrain or related

parts may be damaged, the vehicle may

fly off the truck, or electricity generated

by the operation of the motor may cause

a fire to occur depending on the nature

of the damage or malfunction.

NOTICE

■

To prevent damage to the vehicle

when towing using a wheel-lift type

truck

●

Do not tow the vehicle from the rear

when the power switch is off. The

steering lock mechanism is not strong

enough to hold the front wheels

straight.

●

When raising the vehicle, ensure ade-

quate ground clearance for towing at

the opposite end of the raised vehicle.

Without adequate clearance, the vehi-

cle could be damaged while being

towed.

514

7-2. Steps to take in an emergency

When using a flat-bed truck to trans-
port the vehicle, use tire strapping
belts. Refer to the owner’s manual of
the flat-bed truck for the tire strapping
method.
In order to suppress vehicle movement
during transportation, set the parking
brake and turn the power switch off.



Fluid leaks under the vehicle
(Water dripping from the air condi-
tioning after use is normal.)



Flat-looking tires or uneven tire
wear



Engine coolant temperature gauge
continually points higher than nor-
mal



Changes in exhaust sound



Excessive tire squeal when corner-
ing



Strange noises related to the sus-
pension system



Pinging or other noises related to
the hybrid system



Engine missing, stumbling or run-
ning roughly



Appreciable loss of power



Vehicle pulls heavily to one side
when braking

NOTICE

■

Towing with a sling-type truck

Do not tow with a sling-type truck to pre-

vent body damage.

Using a flatbed truck

NOTICE

■

To prevent damage to the vehicle

during emergency towing

Do not secure cables or chains to the

suspension components.

If you think something is
wrong

If you notice any of the following
symptoms, your vehicle probably
needs adjustment or repair. Con-
tact your Lexus dealer as soon as
possible.

Visible symptoms

Audible symptoms

Operational symptoms

516

7-2. Steps to take in an emergency

■

Brake system warning light (warning buzzer)

■

Brake system warning light (warning buzzer)

■

High coolant temperature warning light

(warning buzzer)

: This light illuminates on the multi-information display.

If a warning light turns on or a warning buzzer sounds

Calmly perform the following actions if any of the warning lights comes on or
flashes. If a light comes on or flashes, but then goes off, this does not necessar-
ily indicate a malfunction in the system. However, if this continues to occur,
have the vehicle inspected by your Lexus dealer.

Actions to the warning lights or warning buzzers

Warning light

Details/Actions

(U.S.A.)

(red)

(Canada)

Indicates that:



The brake fluid level is low; or



The brake system is malfunctioning



Immediately stop the vehicle in a safe place and contact your Lexus
dealer. Continuing to drive the vehicle may be dangerous.

Warning light

Details/Actions

(yellow)

Indicates a malfunction in:



The regenerative braking system;



The electronically controlled brake system; or



The parking brake system



Have the vehicle inspected by your Lexus dealer immediately.

Warning light

Details/Actions

Indicates that the engine coolant temperature is too high



Immediately stop the vehicle in a safe place.
Handling method (



P.560)

517

7-2. Steps to take in an emergency

When trouble

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ses

■

Hybrid system overheat warning light

(warning buzzer)

: This light illuminates on the multi-information display.

■

Charging system warning light

(warning buzzer)

: This light illuminates on the multi-information display.

■

Low engine oil pressure warning light

(warning buzzer)

: This light illuminates on the multi-information display.

■

Malfunction indicator lamp

■

SRS warning light (warning buzzer)

Warning light

Details/Actions

Indicates the hybrid system has overheated



Stop the vehicle in a safe place.
Handling method (



P.562)

Warning light

Details/Actions

Indicates a malfunction in the vehicle’s charging system



Immediately stop the vehicle in a safe place and contact your Lexus
dealer.

Warning light

Details/Actions

Indicates that the engine oil pressure is too low



Immediately stop the vehicle in a safe place and contact your Lexus
dealer.

Warning light

Details/Actions

(U.S.A.)

(Canada)

Indicates a malfunction in:



The hybrid system;



The electronic engine control system;



The electronic throttle control system; or



RX500h: The electronic transmission control system



Immediately stop the vehicle in a safe place and contact your Lexus
dealer.

Warning light

Details/Actions

Indicates a malfunction in:



The SRS airbag system; or



The seat belt pretensioner system



Have the vehicle inspected by your Lexus dealer immediately.

518

7-2. Steps to take in an emergency

■

ABS warning light (warning buzzer)

■

Inappropriate pedal operation warning light

(warning buzzer)

: This light illuminates on the multi-information display.

■

Electric power steering system warning light (warning buzzer)

Warning light

Details/Actions

(U.S.A.)

(Canada)

Indicates a malfunction in:



The ABS; or



The brake assist system



Have the vehicle inspected by your Lexus dealer immediately.

Warning light

Details/Actions

When a buzzer sounds:



Brake Override System is malfunctioning



Drive-Start Control is malfunctioning



Drive-Start Control is operating



PKSB (Parking Support Brake) (if equipped) is operating



Follow the instructions displayed on the multi-information display.

When a buzzer does not sound:
Brake Override System is operating



Release the accelerator pedal and depress the brake pedal.

Warning light

Details/Actions

(red)

(yellow)

Indicates a malfunction in the EPS (Electric Power Steering) system



Have the vehicle inspected by your Lexus dealer immediately.

519

7-2. Steps to take in an emergency

When trouble

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ses

■

Low fuel level warning light

■

Driver’s and front passenger’s seat belt reminder light (warning buzzer)

: Driver’s seat belt warning buzzer:

The driver’s seat belt warning buzzer sounds to alert the driver that his or her seat belt is not
fastened. Once the power switch is turned to ON, the buzzer sounds. If the seat belt is still
unfastened, the buzzer sounds intermittently for a certain period of time after the vehicle
reaches a certain speed.
Front passenger’s seat belt warning buzzer:
The front passenger’s seat belt warning buzzer sounds to alert the front passenger that his
or her seat belt is not fastened. If the seat belt is unfastened, the buzzer sounds intermit-
tently for a certain period of time after the vehicle reaches a certain speed.

■

Rear passengers’ seat belt reminder light (warning buzzer)

: Rear passengers’ seat belt warning buzzer:

The rear passengers’ seat belt warning buzzer sounds to alert the rear passenger that his or
her seat belt is not fastened. If the seat belt is unfastened, the buzzer sounds intermittently
for a certain period of time, after the seat belt is fastened and unfastened and the vehicle
reaches a certain speed.

Warning light

Details/Actions

Indicates that remaining fuel is approximately 2.6 gal. (10.0 L, 2.2 Imp.
gal.) or less



Refuel the vehicle.

Warning light

Details/Actions

Warns the driver and/or front passenger to fasten their seat belts



Fasten the seat belt.
If the front passenger’s seat is occupied, the front passenger’s seat
belt also needs to be fastened to make the warning light (warning
buzzer) turn off.

Warning light

Details/Actions

(Vehicles without a

head-up display)

(Vehicles with a

head-up display)

Warns the rear passengers to fasten their seat belts



Fasten the seat belt.

520

7-2. Steps to take in an emergency

■

Tire pressure warning light (warning buzzer)

■

Intuitive parking assist OFF indicator (warning buzzer)

■

PCS warning light (warning buzzer)

■

LTA indicator (warning buzzer)

Warning light

Details/Actions

When the light comes on (a buzzer sounds):



Low tire inflation pressure from natural causes



After the temperature of the tires has lowered sufficiently, check
the inflation pressure of each tire and adjust them to the specified
level.



Low tire inflation pressure from flat tire



Immediately stop the vehicle in a safe place and perform the nec-
essary actions.

When the light comes on after blinking for approximately 1 minute (a
buzzer does not sounds):
Malfunction in the tire pressure warning system



Have the system checked by your Lexus dealer.

Warning light

Details/Actions

(if equipped)

Indicates a malfunction in the intuitive parking assist function



Have the vehicle inspected by your Lexus dealer immediately.

Indicates that the system is temporarily unavailable, possibly due to a
sensor being dirty or covered with ice, etc.



Follow the instructions displayed on the multi-information display.
(



P.330)

Warning light

Details/Actions

Indicates a malfunction in the PCS (Pre-Collision System).



Follow the instructions displayed on the multi-information display.

If the PCS (Pre-Collision System) or VSC (Vehicle Stability Control)
system is disabled, the PCS warning light will illuminate.

Warning light

Details/Actions

(orange)

Indicates a malfunction in the LTA (Lane Tracing Assist).



Follow the instructions displayed on the multi-information display.

521

7-2. Steps to take in an emergency

When trouble

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ses

■

LDA indicator (warning buzzer)

■

PDA indicator (warning buzzer)

■

Dynamic radar cruise control indicator (warning buzzer)

■

Cruise control indicator (warning buzzer)

■

Driving assist information indicator

Warning light

Details/Actions

(orange)

Indicates a malfunction in the LDA (Lane Departure Alert).



Follow the instructions displayed on the multi-information display.

Warning light

Details/Actions

(orange)

Indicates a malfunction in the PDA (Proactive Driving Assist).



Follow the instructions displayed on the multi-information display.

Warning light

Details/Actions

(orange)

Indicates a malfunction in the dynamic radar cruise control.



Follow the instructions displayed on the multi-information display.

Warning light

Details/Actions

(orange)

Indicates a malfunction in the cruise control.



Follow the instructions displayed on the multi-information display.

Warning light

Details/Actions

Indicates either of the following systems may be malfunctioning.



PCS (Pre-Collision System)



LDA (Lane Departure Alert)



Follow the instructions displayed on the multi-information display.

Indicates one of the following systems is malfunctioning or disabled.



PKSB (Parking Support Brake)



RCD (Rear Camera Detection)



BSM (Blind Spot Monitor)



RCTA (Rear cross traffic alert)



Safe Exit Assist



Follow the instructions displayed on the multi-information display.

522

7-2. Steps to take in an emergency

: If equipped

■

Slip indicator

■

Parking brake indicator (warning buzzer)

■

Brake hold operated indicator (warning buzzer)

■

Warning buzzer

In some cases, the buzzer may not be heard

due to being in a noisy location or audio

sound.

■

Front passenger detection sensor, seat

belt reminder and warning buzzer

●

If luggage is placed on the front passen-

ger seat, the front passenger detection

sensor may cause the warning light to

flash and the warning buzzer to sound

even if a passenger is not sitting in the

seat.

●

If a cushion is placed on the seat, the sen-

sor may not detect a passenger, and the

warning light may not operate properly.

■

SRS warning light

This warning light indicates problems with

the following:

●

Airbag sensor assembly

●

Front impact sensors

●

Side impact sensors (front door)

●

Side impact sensors (front)

●

Front passenger occupant classification

Warning light

Details/Actions

(illuminates)

Indicates a malfunction in:



The VSC system;



The TRAC system;



The Trailer Sway Control;



The Trail Mode function; or



The hill-start assist control system



Have the vehicle inspected by your Lexus dealer immediately.

Warning light

Details/Actions

(flashes)

(U.S.A.)

(flashes)

(Canada)

It is possible that the parking brake is not fully engaged or released



Operate the parking brake switch once again.

This light comes on the parking brake is not released. If the light turns off
after the parking brakes is fully released, the system is operating nor-
mally.
Indicates a malfunction in the parking brake system



Have the vehicle inspected by your Lexus dealer immediately.

Warning light

Details/Actions

(flashes)

Indicates a malfunction in the brake hold system



Have the vehicle inspected by your Lexus dealer immediately.

523

7-2. Steps to take in an emergency

When trouble

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ses

sensors

●

Driver’s seat position sensor

●

Front passenger’s seat belt buckle switch

●

“AIR BAG ON” indicator light

●

“AIR BAG OFF” indicator light

●

Seat belt pretensioners

●

SRS airbags

●

SRS system related wiring harnesses and

power sources

■

If the malfunction indicator lamp comes

on while driving

First check the following:

●

Is the fuel tank empty?

If it is, fill the fuel tank immediately.

●

Is the fuel tank cap loose?

If it is, tighten it securely.

The light will go off after several driving

trips.
If the light does not go off even after several

trips, contact your Lexus dealer as soon as

possible.

■

Electric power steering system warning

light (warning buzzer)

When the 12-volt battery charge becomes

insufficient or the voltage temporarily

drops, the electric power steering system

warning light may come on and the warning

buzzer may sound.

■

When the tire pressure warning light

comes on

Inspect the tires to check if a tire is punc-

tured.
If a tire is punctured:



P.539

If none of the tires are punctured:

Turn the power switch off then turn it to ON.

Check if the tire pressure warning light

comes on or blinks.



If the tire pressure warning light blinks for

approximately 1 minute then stays on

There may be a malfunction in the tire

pressure warning system. Have the vehicle

inspected by your Lexus dealer immedi-

ately.



If the tire pressure warning light comes

After the temperature of the tires has low-

ered sufficiently, check the inflation pres-

sure of each tire and adjust them to the

specified level.
If the warning light does not turn off even

after several minutes have elapsed, check

that the inflation pressure of each tire is at

the specified level and perform the tire

inflation pressure setting procedure.

(



P.488)

If the warning light does not turn off even

after several minutes have elapsed since

performing the tire inflation pressure set-

ting procedure, have the vehicle inspected

by your Lexus dealer immediately.

■

The tire pressure warning light may

come on due to natural causes

The tire pressure warning light may come

on due to natural causes such as natural air

leaks and tire inflation pressure changes

caused by temperature. In this case, adjust-

ing the tire inflation pressure will turn off the

warning light (after a few minutes).

■

When a tire is replaced with a spare tire

The spare tire is not equipped with a tire

pressure warning valve and transmitter. If a

tire goes flat, the tire pressure warning light

will not turn off even though the flat tire has

been replaced with the spare tire. Replace

the spare tire with the repaired tire and

adjust the tire inflation pressure. The tire

pressure warning light will go off after a few

minutes.

■

Conditions that the tire pressure warn-

ing system may not function properly



P.486

524

7-2. Steps to take in an emergency

WARNING

■

If both the ABS and the brake system

warning lights remain on

Stop your vehicle in a safe place immedi-

ately and contact your Lexus dealer.

The vehicle will become extremely

unstable during braking, and the ABS

system may fail, which could cause an

accident resulting in death or serious

injury.

■

When the electric power steering

system warning light comes on

When the light comes on yellow, the

assist to the power steering is restricted.

When the light comes on red, the assist

to the power steering is lost and handling

operations of the steering wheel become

extremely heavy.

When steering wheel operations are

heavier than usual, grip the steering

wheel firmly and operate it using more

force than usual.

■

If the tire pressure warning light

comes on

Be sure to observe the following precau-

tions.

Failure to do so could cause a loss of

vehicle control and result in death or

serious injury.

●

Stop your vehicle in a safe place as

soon as possible. Adjust the tire infla-

tion pressure immediately.

●

If the tire pressure warning light comes

on even after tire inflation pressure

adjustment, it is probable that you have

a flat tire. Check the tires. If a tire is flat,

change it with the spare tire and have

the flat tire repaired by the nearest

Lexus dealer.

●

Avoid abrupt maneuvering and brak-

ing.

If the vehicle tires deteriorate, you

could lose control of the steering

wheel or the brakes.

■

If a blowout or sudden air leakage

should occur

The tire pressure warning system may

not activate immediately.

WARNING

■

Maintenance of the tires

Each tire, including the spare (if pro-

vided), should be checked monthly when

cold and inflated to the inflation pressure

recommended by the vehicle manufac-

turer on the vehicle placard or tire infla-

tion pressure label (tire and load

information label). (If your vehicle has

tires of a different size than the size indi-

cated on the vehicle placard or tire infla-

tion pressure label [tire and load

information label], you should determine

the proper tire inflation pressure for

those tires.)

As an added safety feature, your vehicle

has been equipped with a tire pressure

monitoring system (TPMS-tire pressure

warning system) that illuminates a low

tire pressure telltale (tire pressure warn-

ing light) when one or more of your tires

is significantly under-inflated. Accord-

ingly, when the low tire pressure telltale

(tire pressure warning light) illuminates,

you should stop and check your tires as

soon as possible, and inflate them to the

proper pressure. Driving on a signifi-

cantly under-inflated tire causes the tire

to overheat and can lead to tire failure.

Under-inflation also reduces fuel effi-

ciency and tire tread life, and may affect

the vehicle’s handling and stopping abil-

ity.

Please note that the TPMS (tire pressure

warning system) is not a substitute for

proper tire maintenance, and it is the

driver’s responsibility to maintain correct

tire pressure, even if under-inflation has

not reached the level to trigger illumina-

tion of the TPMS low tire pressure telltale

(tire pressure warning light).

525

7-2. Steps to take in an emergency

n t

ise

■

Warning messages

The warning messages explained below

may differ from the actual messages

according to operation conditions and vehi-

cle specifications.

■

Warning buzzer

In some cases, the buzzer may not be heard

due to being in a noisy location or audio

sound.

Your vehicle has also been equipped with

a TPMS (tire pressure warning system)

malfunction indicator to indicate when

the system is not operating properly. The

TPMS (tire pressure warning system)

malfunction indicator is combined with

the low tire pressure telltale (tire pres-

sure warning light). When the system

detects a malfunction, the telltale will

flash for approximately one minute and

then remain continuously illuminated.

This sequence will continue upon subse-

quent vehicle start-ups as long as the

malfunction exists. When the malfunction

indicator is illuminated, the system may

not be able to detect or signal low tire

pressure as intended.

TPMS (tire pressure warning system)

malfunctions may occur for a variety of

reasons, including the installation of

replacement or alternate tires or wheels

on the vehicle that prevent the TPMS

(tire pressure warning system) from func-

tioning properly. Always check the

TPMS (tire pressure warning system)

malfunction telltale after replacing one

or more tires or wheels on your vehicle to

ensure that the replacement or alternate

tires and wheels allow the TPMS (tire

pressure warning system) to continue to

function properly.

NOTICE

■

To ensure the tire pressure warning

system operates properly

Do not install tires with different specifi-

cations or makers, as the tire pressure

warning system may not operate prop-

erly.

If a warning message is dis-
played

The multi-information display
shows warnings for system malfunc-
tions and incorrectly performed
operations, and messages that indi-
cate a need for maintenance.
When a message is displayed, per-
form the appropriate corrective
action for the message.

If a warning message is displayed
again after the appropriate actions
have been performed, contact your
Lexus dealer.

Additionally, if a warning light
comes on or flashes at the same
time that a warning message is dis-
played, take the appropriate cor-
rective action for the warning light.
(



P.516)

526

7-2. Steps to take in an emergency

■

If “Engine Oil Level Low Add or Replace” is displayed

■

If “Hybrid System Stopped Steering Power Low” is displayed

■

If “Power Reduced to Lower Engine Temp” is displayed (RX500h)

■

If “Auto Power OFF to Conserve Battery” is displayed

Messages and warnings

Cause

Actions

The engine oil level may be low.

Check the level of the engine oil, and add engine oil
if necessary. (



P.476)

This message may be displayed if the vehicle is
stopped on a slope. Move the vehicle to a level sur-
face and check if the message disappears.

Cause

Actions

This message is displayed if the
hybrid system is stopped while driv-
ing.

When steering wheel operations are heavier than
usual, grip the steering wheel firmly and operate it
using more force than usual.

Cause

Actions

This message may be displayed
when the engine coolant tempera-
ture is high.
At that time, the engine power out-
put is reduced until the temperature
decreases to the specified level.

It is still possible to continue driving normally, mean-
while the acceleration performance or vehicle
speed may be lowered.
After driving for a while and the engine coolant tem-
perature is dropped, this message will disappear and
engine power output will resume once the engine
coolant temperature has decreased to normal.
If after driving for a while the message does not dis-
appear or it comes on and off frequently, contact
your Lexus dealer.

Cause

Actions

Power was turned off due to the
automatic power off function.

Next time when starting the hybrid system, operate
the hybrid system for approximately 5 minutes to
recharge the 12-volt battery.

527

7-2. Steps to take in an emergency

When trouble

ari

ses

■

If “Shift is in N Release Accelerator Before Shifting” is displayed

■

If “Press brake when vehicle is stopped Hybrid system may overheat” is dis-
played

■

If “12-Volt Battery Charging System Malfunction Stop in a Safe Place See
Owner’s Manual” is displayed

■

If “Traction battery needs to be protected. Shift into P to restart.” is displayed
(RX350h)

■

If “Traction battery needs to be protected. Refrain from the use of N position.”
is displayed (RX350h)

Cause

Actions

The accelerator pedal has been
depressed when the shift position is
in N.

Release the accelerator pedal and change the shift
position to D or R.

Cause

Actions

The message may be displayed
when the accelerator pedal is
depressed to hold the vehicle while
the vehicle is stopped on an incline,
etc.

The hybrid system may overheat. Release the accel-
erator pedal and depress the brake pedal.

Cause

Actions

It may indicate a malfunction.

Immediately stop the vehicle and contact your Lexus
dealer. Continuing to drive the vehicle may be dan-
gerous.

Cause

Actions

This message is displayed when the
hybrid battery (traction battery)
charge has become extremely low
because the vehicle has been left
with the N shift position selected for
a certain amount of time.

When operating the vehicle, shift to P and restart the
hybrid system.

Cause

Actions

This message may be displayed
when the shift position is in N.

As the hybrid battery (traction battery) cannot be
charged when the shift position is in N, shift the shift
position to P when the vehicle is stopped.

528

7-2. Steps to take in an emergency

■

If “Hybrid System Overheated Output Power Reduced” is displayed

■

If “Tire Set Switching Incomplete Try Tire Set Registration Again See Owner’s
Manual” is displayed

■

If “Headlight System Malfunction Visit Your Dealer” is displayed

: If equipped

■

If “Engine Coolant Temp High Stop in a Safe Place See Owner’s Manual” is
displayed

■

If “Access System with Elec.Key malfunction See owner’s manual” is displayed

■

If “Braking Power Low Stop in a Safe Place See Owner’s Manual” is displayed

Cause

Actions

This message may be displayed
when driving under severe operating
conditions. (For example, when driv-
ing up a long steep hill.)



P.560

Cause

Actions

The wheel set change could not be
completed.

Check which wheel set is installed and perform the
change procedure again from the beginning.

Cause

Actions

The following systems may be malfunctioning.



The LED headlight system



The automatic headlight leveling system



AHB (Automatic High Beam)



AHS (Adaptive High-beam System)

Have the vehicle inspected by your
Lexus dealer immediately.

Actions



P.560

Cause

Actions

It may indicate a malfunction.

Have the vehicle checked by your Lexus dealer
immediately.

Cause

Actions

It may indicate a malfunction.

Immediately stop the vehicle and contact your Lexus
dealer. Continuing to drive the vehicle may be dan-
gerous.

529

7-2. Steps to take in an emergency

When trouble

ari

ses

■

If “Oil pressure low Stop in a safe place See owner’s manual” is displayed

■

If “High Power Consumption Power to Climate Temporarily Limited” is dis-
played

■

If a message that indicates the need for visiting your Lexus dealer is displayed

■

If “Maintenance Required for Traction Battery Cooling Parts See Owner’s
Manual” is displayed

■

If “Shift System Malfunction Shifting Unavailable Drive to a Safe Place and
Stop” is displayed

Cause

Actions

It may indicate a malfunction.

Immediately stop the vehicle and contact your Lexus
dealer. Continuing to drive the vehicle may be dan-
gerous.

Cause

Actions

If this message is displayed fre-
quently, there is a possible malfunc-
tion relating to the charging system
or the 12-volt battery may be deteri-
orating.

Have the vehicle checked by your Lexus dealer.

Cause

Actions

The system or part shown on the
multi-information display is malfunc-
tioning.

Have the vehicle inspected by your Lexus dealer
immediately.

Cause

Actions

The air intake vent or filter of the
hybrid battery (traction battery) may
be clogged, the air intake vent may
be blocked, or there may be a gap in
the duct.



If the air intake vent or filter of the hybrid battery
(traction battery) is dirty, clean them. (



P.498)



If the warning message is shown when the air
intake vent and filter the hybrid battery (traction
battery) are not dirty, have the vehicle inspected
at your Lexus dealer.

Cause

Actions

There is a malfunction in the shift
control system.

Have the vehicle inspected by your Lexus dealer
immediately.

530

7-2. Steps to take in an emergency

■

If “Shift System Malfunction Driving Unavailable” is displayed

■

If a message that indicates the need for the shift lever operation is displayed

■

If “Shift System Malfunction Apply Parking Brake Securely When Parking
See Owner’s Manual” is displayed

■

If “P Switch Malfunction Apply Parking Brake Securely When Parking See
Owner’s Manual” is displayed

■

If “Shift System Unavailable Apply Parking Brake Securely When Parking See
Owner’s Manual” is displayed

■

If “Shift System Malfunction See Owner’s Manual” is displayed

Cause

Actions

There is a malfunction in the shift
control system.

Have the vehicle inspected by your Lexus dealer
immediately.

Cause

Actions

To prevent the shift lever from being operated incor-
rectly or the vehicle from moving unexpectedly, a
message that requires shifting the shift position may
be displayed on the multi-information display.

Follow the instruction of the message
and shift the shift position.

Cause

Actions

It may indicate a malfunction.

Have the vehicle inspected by your Lexus dealer
immediately.

Cause

Actions

It may indicate a malfunction.

Have the vehicle inspected by your Lexus dealer
immediately.

Cause

Actions

It may indicate a malfunction.

Have the vehicle inspected by your Lexus dealer
immediately.

Cause

Actions

It may indicate a malfunction.

Have the vehicle inspected by your Lexus dealer
immediately.

531

7-2. Steps to take in an emergency

When trouble

ari

ses

■

If “Shift System Malfunction Stop in a Safe Place See Owner’s Manual” is dis-
played

■

If “Battery Low Shifting Unavailable See Owner’s Manual” is displayed

■

If “System Malfunction Visit Your Dealer” is displayed

: If equipped

Cause

Actions

It may indicate a malfunction.

Have the vehicle inspected by your Lexus dealer
immediately.

Cause

Actions

It may indicate a malfunction.

Have the vehicle inspected by your Lexus dealer
immediately.

Cause

Actions

Indicates one of the following systems is disabled.



PCS (Pre-Collision System)



LDA (Lane Departure Alert)



LTA (Lane Tracing Assist)



LCA (Lane Change Assist)



AHB (Automatic High Beam)



AHS (Adaptive High-beam System)



Dynamic radar cruise control system



RSA (Road Sign Assist)



PDA (Proactive Driving Assist)



BSM (Blind Spot Monitor)



RCTA (Rear Cross Traffic Alert)



Safe Exit Assist



Intuitive parking assist



PKSB (Parking Support Brake)



RCD (Rear camera detection)

Have the vehicle inspected by your
Lexus dealer immediately.

532

7-2. Steps to take in an emergency

■

If “System Stopped See Owner’s Manual” is displayed

: If equipped

Cause

Actions

Indicates one of the following systems is disabled.



PCS (Pre-Collision System)



LDA (Lane Departure Alert)



LTA (Lane Tracing Assist)



LCA (Lane Change Assist)



AHB (Automatic High Beam)



AHS (Adaptive High-beam System)



Dynamic radar cruise control system



RSA (Road Sign Assist)



PDA (Proactive Driving Assist)



BSM (Blind Spot Monitor)



RCTA (Rear Cross Traffic Alert)



Safe Exit Assist



Intuitive parking assist



PKSB (Parking Support Brake)



RCD (Rear camera detection)

Follow the following correction
methods.



Check the voltage of the 12-volt
battery



Check the sensors that the Lexus
Safety System+ 3 uses for foreign
matter covering them. Remove
them if any. (



P.253)



Vehicles with RCD: Check if the
back door is open.

Indicates the sensors may not be operating properly.
(



P.257, 322, 327, 330, 340, 343, 352, 353,

354, 356)



Check the rear bumper around
the sensors used by the BSM,
RCTA, or Safe Exit Assist for for-
eign matter covering them.
Remove them if any. (



P.319,

325)



Check the sensors including cam-
era sensors used by the Intuitive
parking assist

, PKSB

, or RCD

for foreign matter covering them.
Remove them if any. (



P.328)



When problems are solved and
the sensors are operational, this
indication may disappear by itself.

533

7-2. Steps to take in an emergency

When trouble

ari

ses

■

If “System Stopped Front Camera Low Visibility See Owner’s Manual” is dis-
played

: If equipped

■

If “System Stopped Front Camera Out of Temperature Range Wait until Nor-
mal Temperature” is displayed

: If equipped

Cause

Actions

Indicates one of the following systems is disabled.



PCS (Pre-Collision System)



LDA (Lane Departure Alert)



LTA (Lane Tracing Assist)



LCA (Lane Change Assist)



AHB (Automatic High Beam)



AHS (Adaptive High-beam System)



Dynamic radar cruise control system



RSA (Road Sign Assist)



PDA (Proactive Driving Assist)

Follow the following correction
methods.



Using the windshield wipers,
remove the dirt or foreign matter
from the windshield.



Using the air conditioning system,
defog the windshield.



Close the hood, remove any stick-
ers, etc. to clear the obstruction in
front of the front camera.

Cause

Actions

Indicates one of the following systems is disabled.



PCS (Pre-Collision System)



LDA (Lane Departure Alert)



LTA (Lane Tracing Assist)



LCA (Lane Change Assist)



AHB (Automatic High Beam)



AHS (Adaptive High-beam System)



Dynamic radar cruise control system



RSA (Road Sign Assist)



PDA (Proactive Driving Assist)

Follow the following correction
methods.



If the front camera is hot, such as
after the vehicle is parked in the
sun, use the air conditioning sys-
tem to decrease the temperature
around the front camera



If a sunshade was used when the
vehicle was parked, depending on
its type, the sunlight reflected from
the surface of the sunshade may
cause the temperature of the front
camera to become excessively
high



If the front camera is cold, such
after the vehicle is parked in an
extremely cold environment, use
the air conditioning system to
increase the temperature around
the front camera

534

7-2. Steps to take in an emergency

■

If “System Stopped Front Radar Sensor Blocked Clean Radar Sensor” is dis-
played

: If equipped

■

If “System Stopped Front Radar Sensor Out of Temperature Range Wait until
Normal Temperature” is displayed

: If equipped

Cause

Actions

Indicates one of the following systems is disabled.



PCS (Pre-Collision System)



LDA (Lane Departure Alert)



LTA (Lane Tracing Assist)



LCA (Lane Change Assist)



AHB (Automatic High Beam)



AHS (Adaptive High-beam System)



Dynamic radar cruise control system



PDA (Proactive Driving Assist)

Follow the following correction
methods.



Check if there is any foreign mat-
ter attached to the radar sensor or
radar sensor cover and clean
them if necessary. (



P.254)



This message may be displayed
when driving in an open area with
few nearby vehicles or structures,
such as a desert, grasslands, sub-
urbs, etc.

The message may be cleared by
driving the vehicle in an area with
structures, vehicles, etc. nearby.

Cause

Actions

Indicates one of the following systems is disabled.



PCS (Pre-Collision System)



LDA (Lane Departure Alert)



LTA (Lane Tracing Assist)



LCA (Lane Change Assist)



AHB (Automatic High Beam)



AHS (Adaptive High-beam System)



Dynamic radar cruise control system



PDA (Proactive Driving Assist)

The temperature of the radar sensor
is outside of the operating range.
Wait for the temperature to become
appropriate.

535

7-2. Steps to take in an emergency

When trouble

ari

ses

■

If “System Stopped Front Radar In Self Calibration See Owner’s Manual” is
displayed

: If equipped

■

If “Driver Monitor Out of Temperature Range Wait until Normal Tempera-
ture” is displayed (on some models)

■

If “Unavailable Activation Condition not Satisfied See Owner’s Manual” is
displayed (on some models)

■

If “Cruise Control Unavailable See Owner’s Manual” is displayed

Cause

Actions

Indicates one of the following systems is disabled.



PCS (Pre-Collision System)



LDA (Lane Departure Alert)



LTA (Lane Tracing Assist)



LCA (Lane Change Assist)



AHB (Automatic High Beam)



AHS (Adaptive High-beam System)



Dynamic radar cruise control system



PDA (Proactive Driving Assist)

Follow the following correction
methods.



Check if there is any foreign mat-
ter attached to the radar sensor or
radar sensor cover and clean
them if necessary. (



P.254)



The radar sensor may be mis-
aligned and will be adjusted auto-
matically while driving. Continue
driving for a while.

Cause

Actions

Indicates one of the following sys-
tems is disabled.



Driver monitor



Traffic Jam Assist

The temperature of the driver monitor camera is
outside of the operating range. Wait for the tem-
perature to become appropriate.

Cause

Actions

The LCA function cannot be

used as the operating conditions
have not been met. (P.276)

Operate the turn signal lever again after all of the
operating conditions are met.

Cause

Actions

Indicates one of the following sys-
tems is disabled.



Dynamic radar cruise control



Cruise control

A message is displayed when the
driving assist switch is pushed
repeatedly.

Press the driving assist switch quickly and firmly.

536

7-2. Steps to take in an emergency

■

If “Driver Monitor Unavailable See Owner’s Manual” is displayed (on some
models)

■

If “Parking Assist Unavailable Low Visibility See Owner’s Manual” is dis-
played (on some models)

■

If “Check Engine” is displayed

■

If “Hybrid System Malfunction” is displayed

■

If “Accelerator System Malfunction” is displayed

■

If “Traction battery system malfunction” is displayed

Cause

Actions

The lens of the driver monitor cam-
era may be dirty.

When there is dirt on the camera lens, clean it with a
dry, soft cloth so as to not damage it.

Cause

Actions

Indicates one of the following sys-
tems is disabled.



PKSB (Parking Support

Brake)



RCD (Rear camera detec-

tion)

Remove any dirt or foreign matter from the rear
cameras.

Cause

Actions

It may indicate a malfunction.

Have the vehicle inspected by your Lexus dealer
immediately.

Cause

Actions

It may indicate a malfunction.

Have the vehicle inspected by your Lexus dealer
immediately.

Cause

Actions

It may indicate a malfunction.

Have the vehicle inspected by your Lexus dealer
immediately.

Cause

Actions

It may indicate a malfunction.

Have the vehicle inspected by your Lexus dealer
immediately.

Lexus RX350h (2023 year). Manual in english - page 16