Lexus TX350 (2024 year). Manual in english

474

7-2. Steps to take in an emergency

■

Brake hold operated indicator

■

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)

●

Side impact sensors (rear door)

●

Front passenger occupant classification

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 battery charge becomes insuffi-

cient 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.484

If none of the tires are punctured:

Turn the engine 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

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

lowered sufficiently, check the inflation

pressure 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 pres-

Warning light

Details/Actions

(flashes)

Indicates a malfunction in the brake hold system



Have the vehicle inspected by your Lexus dealer immediately.

475

7-2. Steps to take in an emergency

n t

ris

sure of each tire is at the specified level

and perform the tire inflation pressure

setting procedure.. (



P.443)

If the warning light does not turn off even

after several minutes have elapsed since

performing the tire inflation pressure setting

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 compact spare tire is not equipped with

a tire pressure warning valve and transmit-

ter. If a tire goes flat, the tire pressure warn-

ing 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.441

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.

476

7-2. Steps to take in an emergency

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).

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.

478

7-2. Steps to take in an emergency

The warning lights and warning buzzers operate as follows depending on the con-
tent of the message. If a message indicates the need for inspection by a dealer, have
the vehicle inspected by your Lexus dealer immediately.

: A buzzer sounds the first time a message is shown on the multi-information display.

■

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.

■

If “Engine Oil Level Low Add or

Replace” is displayed

The engine oil level is low. Check the level

of the engine oil, and add if necessary.

(



P.432)

This message may appear if the vehicle is

stopped on a slope. Move the vehicle to a

level surface and check to see if the mes-

sage disappears.

■

If “Engine Stopped Steering Power

Low” is displayed

This message is displayed if the engine is

stopped while driving.
When steering wheel operations are

heavier than usual, grip the steering wheel

firmly and operate it using more force than

usual.

■

If “Power Reduced to Lower Engine

Temp” is displayed

This message may be displayed when the

engine coolant temperature is high.
At that time, the engine power output is

reduced until the temperature decreases to

the specified level. It is still possible to con-

tinue driving normally, meanwhile the

acceleration performance or vehicle speed

may be lowered. After driving for a while

and the engine coolant temperature is

dropped, this message will disappear and

Messages and warnings

Warning light

Warning buzzer

Warning

Sounds



Indicates an important situation, such as when a
system related to driving is malfunctioning or that
danger may result if the correction procedure is
not performed



Indicates a situation, such as when damage to the
vehicle or danger may result

Comes on or

flashes

Sounds

Indicates an important situation, such as when the
systems shown on the multi-information display
may be malfunctioning

Does not sound



Indicates a condition, such as malfunction of elec-
trical components, their condition, or indicates
the need for maintenance



Indicates a situation, such as when an operation
has been performed incorrectly, or indicates how
to perform an operation correctly

479

7-2. Steps to take in an emergency

When trouble

ari

ses

engine power output will resume once the

engine coolant temperature has decreased

to normal.
If after driving for a while the message does

not disappear or it comes on and off fre-

quently, contact your Lexus dealer.

■

If “Auto Power OFF to Conserve Bat-

tery” is displayed

Power was cut off due to the automatic

power off function. Next time when starting

the engine, increase the engine speed

slightly and maintain that level for approxi-

mately 5 minutes to recharge the battery.

■

If “Headlight System Malfunction Visit

Your Dealer” is displayed

The following systems may be malfunction-

ing. Have the vehicle inspected by your

Lexus dealer immediately.

●

The LED headlight system

●

The automatic headlight leveling system

(if equipped)

●

AHB (Automatic High Beam)

●

AHS (Adaptive High-beam System) (if

equipped)

■

If “System Malfunction Visit Your

Dealer” is displayed

Indicates one of the following systems is dis-

abled.

●

PCS (Pre-Collision System)

●

LDA (Lane Departure Alert)

●

LTA (Lane Tracing Assist)

●

LCA (Lane Change Assist) (if

equipped)

●

AHB (Automatic High Beam)

●

AHS (Adaptive High-beam System) (if

equipped)

●

Dynamic radar cruise control

●

RSA (Road Sign Assist) (if equipped)

●

PDA (Proactive Driving Assist)

●

BSM (Blind Spot Monitor)

●

RCTA (Rear Cross Traffic Alert)

●

Safe Exit Assist

●

Intuitive Parking Assist (if equipped)

●

PKSB (Parking Support Brake) (if

equipped)

●

RCD (Rear camera detection) (if

equipped)

Have the vehicle inspected by your Lexus

dealer immediately.

■

If “System Stopped See Owner's Man-

ual” is displayed

Indicates one of the following systems is dis-

abled.

●

PCS (Pre-Collision System)

●

LDA (Lane Departure Alert)

●

LTA (Lane Tracing Assist)

●

LCA (Lane Change Assist) (if

equipped)

●

AHB (Automatic High Beam)

●

AHS (Adaptive High-beam System) (if

equipped)

●

Dynamic radar cruise control

●

RSA (Road Sign Assist) (if equipped)

●

PDA (Proactive Driving Assist)

●

BSM (Blind Spot Monitor)

●

RCTA (Rear Cross Traffic Alert)

●

Safe Exit Assist

●

Intuitive Parking Assist (if equipped)

●

PKSB (Parking Support Brake) (if

equipped)

●

RCD (Rear camera detection) (if

equipped)

Follow the following correction methods.
• Check the voltage of the battery
• Check the sensors that the Lexus Safety

System+ 3 uses for foreign matter cover-

ing them. Remove them if any. (



P.218)

• Check if the back door is open.
Indicates the sensors may not be operating

properly.

480

7-2. Steps to take in an emergency

●

Intuitive Parking Assist (if equipped)

(



P.302)

●

PKSB (static objects front and rear of the

vehicle) (if equipped) (



P.325)

●

PKSB (moving vehicles rear of the vehi-

cle) (if equipped) (



P.327)

●

PKSB (pedestrians rear of the vehicle) (if

equipped) (



P.329)

●

PKSB (pedestrians rear of the vehicle) (if

equipped) (



P.329)

●

PKSB (static objects around the vehicle)

(if equipped) (



P.325)

●

RCD (if equipped) (



P.317)

●

BSM (Blind Spot Monitor) (



P.295)

●

RCTA (Rear Cross Traffic Alert)

(



P.313)

●

Safe Exit Assist (



P.299)

Check the rear bumper around the sensors

(



P.292) used by the BSM, RCTA, Safe

Exit Assist for foreign matter covering them.

Remove them if any.
Check the sensors including camera sen-

sors used by the Intuitive Parking Assist, and

PKSB, for foreign matter covering them.

Remove them if any.
When problems are solved and the sensors

are operational, this indication may disap-

pear by itself.

■

If “System Stopped Front Camera Low

Visibility See Owner's Manual” is dis-

played

Indicates one of the following systems is dis-

abled.

●

PCS (Pre-Collision System)

●

LDA (Lane Departure Alert)

●

LTA (Lane Tracing Assist)

●

LCA (Lane Change Assist) (if

equipped)

●

AHB (Automatic High Beam)

●

AHS (Adaptive High-beam System) (if

equipped)

●

Dynamic radar cruise control

●

RSA (Road Sign Assist) (if equipped)

●

PDA (Proactive Driving Assist)

Follow the following correction methods.
• Using the windshield wipers, remove the

dirt or foreign matter from the wind-

shield.

• Using the air conditioning system, defog

the windshield.

• Close the hood, remove any stickers, etc.

to clear the obstruction in front of the

front camera.

■

If “System Stopped Front Camera Out

of Temperature Range Wait until Nor-

mal Temperature” is displayed

Indicates one of the following systems is dis-

abled.

●

PCS (Pre-Collision System)

●

LDA (Lane Departure Alert)

●

LTA (Lane Tracing Assist)

●

LCA (Lane Change Assist) (if

equipped)

●

AHB (Automatic High Beam)

●

AHS (Adaptive High-beam System) (if

equipped)

●

Dynamic radar cruise control

●

RSA (Road Sign Assist) (if equipped)

●

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 system to decrease the tem-

perature 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 sys-

tem to increase the temperature around

the front camera

■

If “System Stopped Front Radar Sensor

Blocked Clean Radar Sensor” is dis-

played

Indicates one of the following systems is dis-

481

7-2. Steps to take in an emergency

When trouble

ari

ses

abled.

●

PCS (Pre-Collision System)

●

LDA (Lane Departure Alert)

●

LTA (Lane Tracing Assist)

●

LCA (Lane Change Assist) (if

equipped)

●

AHB (Automatic High Beam)

●

AHS (Adaptive High-beam System) (if

equipped)

●

Dynamic radar cruise control

●

PDA (Proactive Driving Assist)

Follow the following correction methods.
• Check if there is any foreign matter

attached to the radar sensor or radar

sensor cover and clean them if necessary

(



P.219)

• This message may be displayed when

driving in an open area with few nearby

vehicles or structures, such as a desert,

grasslands, suburbs, etc. The message

may be cleared by driving the vehicle in

an area with structures, vehicles, etc.

nearby.

■

If “System Stopped Front Radar Sensor

Out of Temperature Range Wait until

Normal Temperature” is displayed

Indicates one of the following systems is dis-

abled.

●

PCS (Pre-Collision System)

●

LDA (Lane Departure Alert)

●

LTA (Lane Tracing Assist)

●

LCA (Lane Change Assist) (if

equipped)

●

AHB (Automatic High Beam)

●

AHS (Adaptive High-beam System) (if

equipped)

●

Dynamic radar cruise control

●

PDA (Proactive Driving Assist)

The temperature of the radar sensor is out-

side of the operating range. Wait for the

temperature to become appropriate.

■

If “System Stopped Front Radar In Self

Calibration See Owner's Manual” is dis-

played

Indicates one of the following systems is dis-

abled.

●

PCS (Pre-Collision System)

●

LDA (Lane Departure Alert)

●

LTA (Lane Tracing Assist)

●

LCA (Lane Change Assist) (if

equipped)

●

AHB (Automatic High Beam)

●

AHS (Adaptive High-beam System) (if

equipped)

●

Dynamic radar cruise control

●

PDA (Proactive Driving Assist)

Follow the following correction methods.
• Check if there is any foreign matter

attached to the radar sensor or radar

sensor cover and clean them if necessary

(



P.219)

• The radar sensor may be misaligned and

will be adjusted automatically while driv-

ing. Continue driving for a while.

■

If “Unavailable Activation Condition not

Satisfied See Owner's Manual” is dis-

played

The LCA function cannot be used as

the operating conditions have not been

met.
Operate the turn signal lever again after all

of the operating conditions are met.

■

If “Cruise Control Unavailable See

Owner's Manual” is displayed

Indicates one of the following systems is dis-

abled.

●

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.

482

7-2. Steps to take in an emergency

■

If “Driver Monitor Out of Temperature

Range Wait until Normal Temperature”

is displayed

Indicates one of the following systems is dis-

abled.

●

Driver monitor (if equipped)

●

Traffic Jam Assist (if equipped)

The temperature of the driver monitor cam-

era is outside of the operating range. Wait

for the temperature to become appropri-

ate.

■

If “Driver Monitor Unavailable See

Owner's Manual” is displayed

The lens of the driver monitor camera may

be dirty.
When there is dirt on the camera lens, clean

it with a dry, soft cloth so as to not damage

it.

■

If “Parking Assist Unavailable Sensor

Blocked” is displayed

A sensor may be covered with water drops,

ice, snow, dirt, etc. Remove the water drops,

ice, snow, dirt, etc., from the sensor to return

the system to normal.
Also, due to ice forming on a sensor at low

temperatures, a warning message may be

displayed or the sensor may not be able to

detect an object. Once the ice melts, the

system will return to normal.
If a sensor is dirty, the position of the dirty

sensor will be shown on the display.
If an abnormality is displayed even though

there are no water drops, ice, snow or dirt,

the sensor may be operating abnormally.

Have the vehicle inspected by your Lexus

dealer.

■

If “Parking Assist Unavailable Low Visi-

bility See Owner's Manual” is displayed

Indicates one of the following systems is dis-

abled.

●

RCD (Rear camera detection) (if

equipped)

●

PKSB (Parking Support Brake) (if

equipped)

Remove any dirt or foreign matter from the

rear camera.

■

If “Shift System Malfunction Shifting

Unavailable Drive to a Safe Place and

Stop” or “Shift System Malfunction

Driving Unavailable” is displayed

There is a malfunction in the shift control

system. Have the vehicle inspected by your

Lexus dealer immediately.

■

If a message that indicates the need for

the shift lever operation is displayed

To prevent the shift lever from being oper-

ated incorrectly or the vehicle from moving

unexpectedly, a message that requires shift-

ing the shift position may be displayed on

the multi-information display. In that case,

follow the instruction of the message and

shift the shift position.

■

If “Check Fuel Cap” is displayed

The fuel tank cap is not properly installed.

Correctly install the fuel tank cap.

■

If “Maintenance Required Soon” is dis-

played

Indicates that all maintenance according to

the driven distance on the maintenance
schedule

should be performed soon.

Comes on approximately 4500 miles

(7200 km) after the message has been

reset. If necessary, perform maintenance.

Please reset the message after the mainte-

nance is performed. (



P.421)

: Refer to the separate “Scheduled Main-

tenance Guide” or “Owner’s Manual
Supplement” for the maintenance inter-
val applicable to your vehicle.

■

If “Maintenance Required” is displayed

Indicates that all maintenance is required to

correspond to the driven distance on the
maintenance schedule

Comes on approximately 5000 miles

(8000 km) after the message has been

reset. (The indicator will not work properly

unless the message has been reset.) Per-

form the necessary maintenance. Please

reset the message after the maintenance is

performed. (



P.421)

: Refer to the separate “Scheduled Main-

tenance Guide” or “Owner’s Manual
Supplement” for the maintenance inter-

483

7-2. Steps to take in an emergency

When trouble

ari

ses

val applicable to your vehicle.

■

If “Oil Maintenance Required Soon” is

displayed

Indicates that the engine oil should be

scheduled to be changed.
Check the engine oil and change it if neces-

sary. After changing the engine oil, make

sure to reset the message. (



P.432)

■

If “Oil Maintenance Required Visit Your

Dealer” is displayed

Indicates that the engine oil should be

changed.
Check and change the engine oil, and oil fil-

ter by your Lexus dealer. After changing the

engine oil, make sure to reset the message.

(



P.432)

■

If a message that indicates the need for

visiting your Lexus dealer is displayed

The system or part shown on the

multi-information display is malfunctioning.

Have the vehicle inspected by your Lexus

dealer immediately.

■

If a message that indicates the need for

referring to Owner’s Manual is dis-

played

●

If any of the following messages are

shown on the multi-information display, it

may indicate a malfunction. Immediately

stop the vehicle and contact your Lexus

dealer.

• “Braking Power Low”

• “12-Volt Battery Charging System Mal-

function”

• “Oil pressure low”

●

If any of the following messages are

shown on the multi-information display, it

may indicate a malfunction. Have the

vehicle inspected by your Lexus dealer

immediately.

• “Access System with Elec.Key malfunc-

tion See owner's manual”

• “Shift System Malfunction Apply Parking

Brake Securely When Parking See

Owner's Manual”

• “P Switch Malfunction Apply Parking

Brake Securely When Parking See

Owner's Manual”

• “Shift System Unavailable Apply Parking

Brake Securely When Parking See

Owner's Manual”

• “Shift System Malfunction See Owner's

Manual”

• “Shift System Malfunction Stop in a Safe

Place See Owner's Manual”

• “Battery Low Shifting Unavailable See

Owner's Manual”

●

If any of the following messages are

shown on the multi-information display,

follow the instructions.

• “Engine Coolant Temp High” (



P.504)

• “Transmission Oil Temp High” (



P.186)

• “Battery Low” (



P.498)

484

7-2. Steps to take in an emergency



Stop the vehicle in a safe place on a
hard, flat surface.



Set the parking brake.



Shift the shift position to P.



Stop the engine.



Turn on the emergency flashers.
(



P.460)



Turn off the power back door sys-
tem. (



P.528)

If you have a flat tire

Your vehicle is equipped with a
compact spare tire. The flat tire can
be replaced with the compact
spare tire.

For details about tires:



P.438

WARNING

■

If you have a flat tire

Do not continue driving with a flat tire.

Driving even a short distance with a flat

tire can damage the tire and the wheel

beyond repair, which could result in an

accident.

Before jacking up the vehicle

485

7-2. Steps to take in an emergency

n t

ris

Compact spare tire
Jack
Jack handle
Wheel nut wrench
Wheel lock key (if equipped)
Screwdriver

Location of the spare tire, jack and tools

WARNING

■

Using the tire jack

Observe the following precautions.

Improper use of the tire jack may cause

the vehicle to suddenly fall off the jack,

leading to death or serious injury.

●

Do not use the tire jack for any pur-

pose other than replacing tires or

installing and removing tire chains.

●

Only use the tire jack that comes with

this vehicle for replacing a flat tire.

Do not use it on other vehicles, and do

not use other tire jacks for replacing

tires on this vehicle.

●

Put the jack properly in its jack point.

●

Do not put any part of your body under

the vehicle while it is supported by the

jack.

●

Do not start the engine or drive the

vehicle while the vehicle is supported

by the jack.

●

Do not raise the vehicle while some-

one is inside.

●

When raising the vehicle, do not put an

object on or under the jack.

486

7-2. Steps to take in an emergency

When replacing tires on a vehicle with
wheel lock nuts, use the following pro-
cedures to remove and install the
wheel lock nuts. The wheel lock key is
stored in the tray inside the luggage
compartment. Always return the wheel
lock key to its original position after
use, so that it does not get lost.
(



P.485)

■

Removal

For ease of removal, the wheel lock nut
should always be the first one loos-
ened.

Place the wheel lock key on top of
the wheel lock nut, turning until the
wheel lock key and wheel lock nut
patterns engage.

Place the wheel nut wrench on the
wheel lock key, and while applying
pressure on the wheel lock key,
loosen the wheel lock nut.

■

Installation

For ease of installation, the wheel lock
nut should always be the last one tight-
ened.

By hand, install a wheel lock nut on
each wheel.

Place the wheel lock key on top of
the wheel lock nut, turning until the
wheel lock key and wheel lock nut
patterns engage.

Place the wheel nut wrench on the
wheel lock key, and while applying
pressure on the wheel lock key,
tighten the wheel lock nut to the
recommended torque.

Remove the center deck board.
(



P.396)

Take out the jack.

WARNING

●

Do not raise the vehicle to a height

greater than that required to replace

the tire.

●

Use a jack stand if it is necessary to get

under the vehicle.

●

When lowering the vehicle, make sure

that there is no-one near the vehicle. If

there are people nearby, warn them

vocally before lowering.

■

Replacing a flat tire for vehicles with

power back door

In cases such as when replacing tires,

make sure to canceling the power back

door system (



P.119). Failure to do so

may cause the back door to operate

unintentionally if the power back door

switch is accidentally touched, resulting

in hands and fingers being caught and

injured.

Wheel lock nut (if equipped)

NOTICE

■

When using a wheel lock key (if

equipped)

Do not use an impact wrench. Using an

impact wrench may cause permanent

damage to wheel lock nut and wheel lock

key. If in doubt about wheel lock applica-

tion, contact your Lexus dealer.

Taking out the jack

487

7-2. Steps to take in an emergency

n t

ris

Disengage the tightening strap.

Remove the center deck board.
(



P.396)

Removing the cover

Disengage the 7 claws and pull the side

deck board to remove it.

Disengage the 4 claws and pull the
cover to remove it.

Remove the center deck under
tray.

Loosen the center fastener that
secures the compact spare tire.

Chock the tires.

Taking out the spare tire

WARNING

■

When storing the compact spare tire

Be careful not to catch fingers or other

body parts between the spare tire and

the body of the vehicle.

Replacing a flat tire

488

7-2. Steps to take in an emergency

Using a wheel nut wrench, slightly
loosen the wheel nuts (approxi-
mately one turn).

Vehicles with wheel locks: Use the wheel

lock key to loosen the wheel lock.

Turn the tire jack portion by
hand until the notch of the jack is in
contact with the jack point.

The jack point guides are located under

the rocker panel. They indicate the jack

point positions.

Install the wheel nut wrench to the
jack handle.

Raise the vehicle until the tire is
slightly raised off the ground.

Remove all the wheel nuts and the
tire.

When resting the tire on the ground, place

the tire so that the wheel design faces up to

avoid scratching the wheel surface.

Flat tire

Wheel chock posi-

tions

Front left-hand side

Behind the rear
right-hand side tire

Front right-hand
side

Behind the rear
left-hand side tire

Rear left-hand side

In front of the front
right-hand side tire

Rear right-hand side

In front of the front
left-hand side tire

489

7-2. Steps to take in an emergency

n t

ris

Remove any dirt or foreign matter
from the wheel contact surfaces
and wheel nuts.

If foreign matter is on the wheel contact

surface, the wheel nuts may loosen while

the vehicle is in motion, causing the tire to

come off.

Install the spare tire and loosely
tighten each wheel nut by hand by
approximately the same amount.

Tighten the wheel nuts until the tapered
portion

comes into loose contact with

the disc wheel seat

WARNING

■

Replacing a flat tire

●

Do not touch the disc wheels or the

area around the brakes immediately

after the vehicle has been driven. After

the vehicle has been driven the disc

wheels and the area around the brakes

will be extremely hot. Touching these

areas with hands, feet or other body

parts while changing a tire, etc. may

result in burns.

●

Failure to follow these precautions

could cause the wheel nuts to loosen

and the tire to fall off, resulting in death

or serious injury.

• Never use oil or grease on the wheel

bolts or wheel nuts.

Oil and grease may cause the wheel

nuts to be excessively tightened, lead-

ing to bolt or disc wheel damage.

Remove any oil or grease that has

adhered when installing the wheel

nuts.

• After replacing a tire, check the tight-

ening torque as soon as possible.

Wheel nut torque: 103 ft•lbf (140

N•m, 14.3 kgf•m)

• When installing a tire, only use wheel

nuts that have been specifically

designed for that wheel.

• If there are any cracks or deformations

in the bolt screws, nut threads or bolt

holes of the wheel, have the vehicle

inspected by your Lexus dealer.

• Do not attach a heavily damaged

wheel ornament, as it may fly off the

wheel while the vehicle is moving.

●

Do not try to remove the wheel orna-

ment by hand. Take due care in han-

dling the ornament to avoid

unexpected personal injury.

Installing the spare tire

490

7-2. Steps to take in an emergency

Lower the vehicle.

Securely tighten the wheel nuts two
or three times in the order shown in
the illustration using a wheel nut
wrench.

Vehicles with wheel locks: Tighten the

wheel lock using the wheel lock key after

tightening the other wheel nuts.
Tightening torque:

103 ft•lbf (140 N•m, 14.3 kgf•m)

Stow the flat tire, tire jack and all
tools.

■

The compact spare tire

●

The compact spare tire is identified by the

label “TEMPORARY USE ONLY” on

the tire sidewall.

●

Use the compact spare tire temporarily,

and only in an emergency.

●

Make sure to check the tire inflation pres-

sure of the compact spare tire. (



P.516)

■

When using the compact spare tire

As the compact spare tire is not equipped

with a tire pressure warning valve and trans-

mitter, low inflation pressure of the compact

spare tire will not be indicated by the tire

pressure warning system. Also, if you

replace the compact spare tire after the tire

pressure warning light comes on, the light

remains on.

■

When the compact spare tire is

equipped

The vehicle becomes lower when driving

with the compact spare tire compared to

when driving with standard tires.

WARNING

■

When using the compact spare tire

●

Remember that the compact spare tire

provided is specifically designed for

use with your vehicle. Do not use your

compact spare tire on another vehicle.

●

Do not use more than one spare tire

simultaneously.

●

Replace the compact spare tire with a

standard tire as soon as possible.

●

Avoid sudden acceleration, abrupt

steering, sudden braking and shifting

operations that cause sudden engine

braking.

■

When the compact spare tire is

attached

The vehicle speed may not be correctly

detected, and the following systems may

not operate correctly:

• ABS & Brake assist

• VSC

• TRAC

• Trailer Sway Control

• EPS

• Dynamic radar cruise control

• Cruise control

• PCS (Pre-Collision System)

491

7-2. Steps to take in an emergency

n t

ris

WARNING

• LTA (Lane Tracing Assist)

• LDA (Lane Departure Alert)

• RSA (Road Sign Assist) (if equipped)

• AHB (Automatic High Beam)

• AHS (Adaptive High-beam System) (if

equipped)

• Tire pressure warning system

• PKSB (if equipped)

• Intuitive parking assist (if equipped)

• Lexus Teammate Advanced Park (if

equipped)

• Lexus parking assist monitor (if

equipped)

• Panoramic view monitor (if equipped)

• BSM (Blind Spot Monitor)

• RCTA (Rear cross traffic alert)

• Safe Exit Assist (with door opening

control)

• Navigation system

Also, not only can the following system

not be utilized fully, but it may even nega-

tively affect the drive-train components:

• AWD system (AWD models)

■

Speed limit when using the compact

spare tire

Do not drive at speeds in excess of 50

mph (80 km/h) when a compact spare

tire is installed on the vehicle.

The compact spare tire is not designed

for driving at high speeds. Failure to

observe this precaution may lead to an

accident causing death or serious injury.

■

After using the tools and jack

Before driving, make sure all the tools

and jack are securely in place in their

storage location to reduce the possibility

of personal injury during a collision or

sudden braking.

NOTICE

■

Be careful when driving over bumps

with the compact spare tire installed

on the vehicle

The vehicle becomes lower when driving

with the compact spare tire compared to

when driving with standard tires. Be

careful when driving over uneven road

surfaces.

■

Driving with tire chains and the com-

pact spare tire

Do not fit tire chains to the compact

spare tire.

Tire chains may damage the vehicle body

and adversely affect driving perfor-

mance.

■

When replacing the tires

When removing or fitting the wheels,

tires or the tire pressure warning valve

and transmitter, contact your Lexus

dealer as the tire pressure warning valve

and transmitter may be damaged if not

handled correctly.

492

7-2. Steps to take in an emergency

One of the following may be the cause
of the problem:



There may not be sufficient fuel in
the vehicle’s tank.
Refuel the vehicle.



The engine may be flooded.
Try to restart the engine again fol-
lowing correct starting procedures.
(



P.182)



There may be a malfunction in the
engine immobilizer system.
(



P.64)



There may be a malfunction in the
shift control system.

(



P.183, 478)

: It may not be possible to shift the shift

position from P.

One of the following may be the cause
of the problem:



The battery may be discharged.

(



P.498)



The battery terminal connections
may be loose or corroded.
(



P.435)

The engine starting system may be
malfunctioning due to an electrical
problem such as electronic key battery
depletion or a blown fuse. However, an
interim measure is available to start the
engine. (



P.492)

One of the following may be the cause
of the problem:



One or both of the battery terminals
may be disconnected. (



P.435)



The battery may be discharged.
(



P.498)

Contact your Lexus dealer if the problem
cannot be repaired, or if repair procedures
are unknown.

When the engine does not start, the
following steps can be used as an
interim measure to start the engine if
the engine switch is functioning nor-
mally.
Do not use this starting procedure

If the engine will not start

If the engine will not start even
though correct starting procedures
are being followed (



P.182), con-

sider each of the following points:

The engine will not start even
though the starter motor oper-
ates normally.

The starter motor turns over
slowly, the interior lights and
headlights are dim, or the horn
does not sound or sounds at a low
volume.

The starter motor does not turn
over

The starter motor does not turn
over, the interior lights and head-
lights do not turn on, or the horn
does not sound.

Starting the engine in an emer-
gency

493

7-2. Steps to take in an emergency

n t

ris

except in cases of emergency.

Pull the parking brake switch to
check that the parking brake is set.
(



P.192)

Parking brake indicator will come on.

Turn the engine switch to ACC.

*1, 2

Press and hold the engine switch
for about 15 seconds while
depressing the brake pedal firmly.

Even if the engine can be started using
the above steps, the system may be
malfunctioning. Have the vehicle
inspected by your Lexus dealer.

: ACC mode can be enabled/disabled

on the customize menu. (



P.528)

: When ACC is disabled, turn the engine

switch to ON then OFF, and start the
engine as described in P.495 within 5
seconds.

If you lose your keys

New genuine mechanical keys can
be made by your Lexus dealer using
another mechanical key and the
key number stamped on your key
number plate.

Keep the plate in a safe place such
as your wallet, not in the vehicle.

NOTICE

■

When an electronic key is lost

If the electronic key remains lost, the risk

of vehicle theft increases significantly.

Visit your Lexus dealer immediately with

all remaining electronic keys and the

card key (if equipped) that were pro-

vided with your vehicle.

494

7-2. Steps to take in an emergency



If the fuel filler door opener switch
cannot be operated, remove the
cover inside the luggage compart-
ment and pull the lever to open the
fuel filler door.

■

When the electronic key does not work

properly

●

Check on the center display if the smart

access system with push-button start is

enabled. If disabled, change to enable the

smart access system with push-button

start.

●

Check if battery-saving mode is set. If it is

set, cancel the function. (



P.121)

●

The electronic key function may be sus-

pended. (



P.94)

Use the mechanical key (



P.97) in

order to perform the following opera-
tions:

If the fuel filler door cannot
be opened

If the fuel filler door opener switch
cannot be operated, contact your
Lexus dealer to service the vehicle.
In case where refueling is urgently
necessary, the following procedure
can be used to open the fuel filler
door.

Opening the fuel filler door

If the electronic key does not
operate properly

If communication between the
electronic key and vehicle is inter-
rupted (



P.122) or the electronic

key cannot be used because the
battery is depleted, the smart
access system with push-button
start and wireless remote control
cannot be used. In such cases, the
doors can be opened and the
engine can be started by following
the procedure below.

NOTICE

■

In case of a smart access system with

push-button start malfunction or

other key-related problems

Take your vehicle with all the electronic

keys provided with your vehicle (includ-

ingthe card key) to your Lexus dealer.

Locking and unlocking the doors

495

7-2. Steps to take in an emergency

n t

ris

Insert a plastic card, etc. into the
gap in the door handle to pry up the
cover.

To avoid damage, do not apply excessive

force to the cover.

Remove the cover by pressing it on
the rear.

Use the mechanical key in order to
perform the following operations:

Unlocks all the doors

Turning the key rearward unlocks the
driver’s door. Turning the key again unlocks
the other doors.

Locks all the doors

■

Key linked functions

Closes the windows and the pan-
oramic moon roof

(turn and hold)

Opens the windows and the pan-
oramic moon roof

(turn and hold)

These settings must be customized at your

Lexus dealer.

: If equipped

Ensure that the shift position is in P
and depress the brake pedal.

Touch the Lexus emblem side of the
electronic key to the engine switch.

When the electronic key is detected, a

buzzer will sound and the engine switch

mode will change to ON.

WARNING

■

When using the mechanical key and

operating the power windows or the
panoramic moon roof

: If equipped

Operate the power window or the pan-

oramic moon roof after checking to

make sure that there is no possibility of

any passenger having any of their body

parts caught in the window or the pan-

oramic moon roof.

Also, do not allow children to operate the

mechanical key. It is possible for children

and other passengers to get caught in

the power window or the panoramic

moon roof.

Starting the engine

496

7-2. Steps to take in an emergency

When the smart access system with

push-button start is deactivated in custom-

ization setting, the engine switch will turn

to ACC.

Firmly depress the brake pedal and
check that

is shown on the

multi-information display.

Press the engine switch shortly and
firmly.

In the event that the engine still cannot
be started, contact your Lexus dealer.

■

Stopping the engine

Shift the shift position to P, set the parking

brake, and press the engine switch as you

normally do when stopping the engine.

■

Replacing the key battery

As the above procedure is a temporary

measure, it is recommended that the elec-

tronic key battery be replaced immediately

when the battery is depleted. (



P.453)

■

Changing engine switch modes

Release the brake pedal and press the

engine switch in step

above. The engine

does not start and modes will be changed

each time the switch is pressed. (



P.184)

■

Opening a door using the manual
release handle from outside the
vehicle

Pull the manual release handle to
open the door.

Normally, the manual release handles can-
not be used to open the doors.
To open a door, enable manual release
handle operation. (



P.497)

If a door cannot be opened
using the door opener switch

If a door cannot be opened using
the door opener switch, it can be
opened using a manual release
handle.

NOTICE

■

Operating a manual release handle

Normally, the manual release handles

cannot be used to open the doors. To

enable manual release handle operation,

perform the following. If the following is

not performed and/or a manual release

handle is operated with force, it may

deform or be damaged.

Opening a door using the man-
ual release handle

497

7-2. Steps to take in an emergency

When trouble

ari

ses

■

Opening a door using the manual
release handle from inside the
vehicle

Pull the manual release handle
twice to open the door.

Pulling the handle once will enable opera-
tion. Pulling the handle again will open the
door.

■

Manual release handle operating condi-

tions

●

When the vehicle is involved in a collision

The manual release handle may not

become operable depending on the force

of the impact and conditions of the colli-

sion.

●

When the battery voltage drops slowly

while a door was unlocked

It may not work depending on how it is low-

ered.

●

When manual release handle operation

is enabled from inside the vehicle

●

When manual release handle operation

is enabled from outside the vehicle using

the mechanical key

■

Enabling outside manual release handle

operation using the mechanical key

Operation of a manual release handle can

be enabled by unlocking a door with the

mechanical key.

Insert a plastic card, etc. into the gap in

the door handle to pry up the cover.

To avoid damage, do not apply excessive

force to the cover.

Remove the cover by pressing it on the

rear.

Using the mechanical key, turn the lock

cylinder to the unlock side to enable the

manual release handle operation.

The mechanical key can only be inserted in

one direction, as the key only has a groove

on one side.
If the key cannot be inserted in a lock cylin-

der, turn it over and re-attempt to insert it.

■

Conditions which manual release han-

dle operation is disabled

●

Normally, operation of the outside man-

ual release handles is disabled, and they

498

7-2. Steps to take in an emergency

cannot be used to open the doors.

When operation is enabled by operating a

manual release handle or using a mechani-

cal key, operation will be disabled automat-

ically if the door is opened using the door

opener switch or locked.

●

Operation of the inside manual release

handles is disabled when the engine

switch is in ON, and they cannot be used

to open the doors.

When operation is enabled by operating a

manual release handle or using a mechani-

cal key, operation will be disabled automat-

ically if the door is opened using the door

opener switch or locked.

●

To prevent a door from being opened

accidentally, when the engine switch is in

ON, after an inside manual release han-

dle is operated once, operation will auto-

matically be disabled after approximately

1 second.

If the vehicle battery is dis-
charged

The following procedures may be
used to start the engine if the vehi-
cle’s battery is discharged.
You can also call your Lexus dealer
or a qualified repair shop.

499

7-2. Steps to take in an emergency

When trouble

ari

ses

If you have a set of jumper (or booster)
cables and a second vehicle with a
12-volt battery, you can jump start your
vehicle by following the steps below.

Confirm that the electronic key is
being carried.

When connecting the jumper (or booster)

cables, depending on the situation, the

alarm may activate and doors locked.

(



P.66)

Open the hood. (



P.428)

Push the tab and open the positive
(+) battery terminal cover.

Connect a positive jumper cable clamp to   on your vehicle and connect the
clamp on the other end of the positive cable to   on the second vehicle. Then,
connect a negative cable clamp to   on the second vehicle and connect the
clamp at the other end of the negative cable to  .

Use jumper cables that can reach the specified terminals and connecting point.

Positive (+) battery terminal (your vehicle)

Restarting the engine

500

7-2. Steps to take in an emergency

Positive (+) battery terminal (second vehicle)
Negative (-) battery terminal (second vehicle)
Metallic point shown in the illustration

Start the engine of the second vehi-
cle. Increase the engine speed
slightly and maintain at that level for
approximately 5 minutes to
recharge the battery of your vehi-
cle.

Open and close any of the doors of
your vehicle with the engine switch
off.

Maintain the engine speed of the
second vehicle and start the engine
of your vehicle by turning the
engine switch to ON.

Once the vehicle’s engine has
started, remove the jumper cables
in the exact reverse order from
which they were connected.

Once the engine starts, have the vehi-
cle inspected at your Lexus dealer as
soon as possible.

■

Starting the engine when the battery is

discharged

The engine cannot be started by push-start-

ing.

■

If the doors cannot be unlocked using

the smart access system with push-but-

ton start or wireless remote control

The doors can be opened by enabling its

respective manual release handle opera-

tion. (



P.497)

■

Locking the doors after the battery was

discharged

The doors cannot be locked using the smart

access system with push-button start or

wireless remote control.
By locking the door using the mechanical

key, the operation of the manual release

handle can be disabled.



Driver’s door

Insert a plastic card, etc. into the gap in

the door handle to pry up the cover.

To avoid damage, do not apply excessive

force to the cover.

Remove the cover by pressing it on the

rear.

Using the mechanical key, turn the lock

cylinder to the unlock side to enable the

manual release handle operation.

Check that the door cannot be opened.



Doors other than the driver’s door

Open the door. Using the mechanical

key, slide the cover in the direction

shown in the illustration.

To avoid damage, do not apply excessive

501

7-2. Steps to take in an emergency

When trouble

ari

ses

force to the cover.

Insert the mechanical key into the open-

ing.

Remove the mechanical key and slide

the cover back to its original position.

Check that all of the doors cannot be

opened.

■

To prevent battery discharge

●

Turn off the headlights and the audio sys-

tem while the engine is stopped. (Except

when the engine is stopped by the Stop &

Start system.)

●

Turn off any unnecessary electrical com-

ponents when the vehicle is running at a

low speed for an extended period, such

as in heavy traffic.

■

When the battery is removed or dis-

charged

●

Information stored in the ECU is cleared.

When the battery is depleted, have the

vehicle inspected at your Lexus dealer.

●

Some systems may require initialization.

(



P.544)

■

When removing the battery terminals

●

When the battery terminals are removed,

the information stored in the ECU is

cleared. Before removing the battery ter-

minals, contact your Lexus dealer.

●

If a battery terminal is disconnected, the

doors will not be able to be opened using

the door opener switches and the elec-

tronic key may become trapped in the

vehicle

To prevent the electronic key (mechanical

key) from being locked inside the vehicle,

make sure to remove it from the vehicle

before disconnecting a battery terminal.

●

If the electronic key (mechanical key) is

to be left in the vehicle, make sure to

open a window so an inside manual

release handle can be operated.

■

Charging the battery

The electricity stored in the battery will dis-

charge gradually even when the vehicle is

not in use, due to natural discharge and the

draining effects of certain electrical appli-

ances. If the vehicle is left for a long time,

the battery may discharge, and the engine

may be unable to start. (The battery

recharges automatically during driving.)

■

After jump starting the vehicle

Be sure to disable the Stop & Start system

so that the battery can be charged.

(



P.286)

502

7-2. Steps to take in an emergency

■

When recharging or replacing the bat-

tery

●

In some cases, it may not be possible to

unlock the doors using the smart access

system with push-button start when the

battery is discharged. Use the wireless

remote control or the mechanical key to

lock or unlock the doors.

●

The engine may not start on the first

attempt after the battery has recharged

but will start normally after the second

attempt. This is not a malfunction.

●

The engine switch mode is memorized by

the vehicle. When the battery is recon-

nected, the system will return to the

mode it was in before the battery was dis-

charged. Before disconnecting the bat-

tery, turn the engine switch off.

If you are unsure what mode the engine

switch was in before the battery dis-

charged, be especially careful when

reconnecting the battery.

●

2WD models: If the battery discharges, it

may not be possible to shift the shift posi-

tion to other positions. In this case, the

vehicle cannnot be towed without lifting

both front wheels because the front

wheels will be locked.

●

AWD models: The vehicle cannnot be

towed without lifting all four wheels.

●

Some systems may require initialization.

(



P.544)

●

The Stop & Start system may not auto-

matically stop the engine for up to an

hour.

■

When replacing the battery

●

Use a genuine battery specifically

designed for use with the Stop & Start

system or a battery with equivalent speci-

fications to a genuine battery. If an unsup-

ported battery is used, Stop & Start

system functions may be restricted to

protect the battery. Also, battery perfor-

mance may decrease and the engine may

not be able to restart. Contact your Lexus

dealer for details.

●

Use a battery that the case size is same as

the previous one (LN3), 20 hour rate

capacity (20HR) is equivalent (65Ah) or

greater, and performance rating (CCA)

is equivalent (603A) or greater.

• If the sizes differ, the battery cannot be

properly secured.

• If the 20 hour rate capacity is low, even if

the time period where the vehicle is not

used is a short time, the battery may dis-

charge and the engine may not be able to

start.

For details, consult your Lexus dealer.

WARNING

■

When removing the battery terminals

Always remove the negative (-) terminal

first. If the positive (+) terminal contacts

any metal in the surrounding area when

the positive (+) terminal is removed, a

spark may occur, leading to a fire in addi-

tion to electrical shocks and death or

serious injury.

■

Avoiding battery fires or explosions

Observe the following precautions to

prevent accidentally igniting the flamma-

ble gas that may be emitted from the bat-

tery:

●

Make sure each jumper cable is con-

nected to the correct terminal and that

it is not unintentionally in contact with

any other than the intended terminal.

●

Do not allow the other end of the

jumper cable connected to the “+” ter-

minal to come into contact with any

other parts or metal surfaces in the

area, such as brackets or unpainted

metal.

●

Do not allow the + and - clamps of the

jumper cables to come into contact

with each other.

●

Do not smoke, use matches, cigarette

lighters or allow open flame near the

battery.

503

7-2. Steps to take in an emergency

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ris

WARNING

■

Battery precautions

The battery contains poisonous and cor-

rosive acidic electrolyte, while related

parts contain lead and lead compounds.

Observe the following precautions when

handling the battery:

●

When working with the battery, always

wear safety glasses and take care not

to allow any battery fluids (acid) to

come into contact with skin, clothing

or the vehicle body.

●

Do not lean over the battery.

●

In the event that battery fluid comes

into contact with the skin or eyes,

immediately wash the affected area

with water and seek medical attention.

Place a wet sponge or cloth over the

affected area until medical attention

can be received.

●

Always wash your hands after handling

the battery support, terminals, and

other battery-related parts.

●

Do not allow children near the battery.

■

When replacing the battery

●

When the vent plug and indicator are

close to the hold down clamp, the bat-

tery fluid (sulfuric acid) may leak.

●

For information regarding battery

replacement, contact your Lexus

dealer.

■

When disconnecting the battery

Do not disconnect the negative (-) termi-

nal on the body side. The disconnected

negative (-) terminal may touch the posi-

tive (+) terminal, which may cause a short

and result in death or serious injury.

NOTICE

■

When handling jumper cables

When connecting the jumper cables,

ensure that they do not become entan-

gled in the cooling fan or engine drive

belt.

■

When connecting jumper cables

Make sure to connect jumper cables to

the specified terminals and connecting

point. Failure to do so may adversely

affect the electronic devices or damage

to them.

504

7-2. Steps to take in an emergency

Stop the vehicle in a safe place and
turn off the air conditioning system,
and then stop the engine.

If you see steam:
Carefully lift the hood after the
steam subsides.
If you do not see steam:
Carefully lift the hood.

After the engine has cooled down
sufficiently, inspect the hoses and

radiator core (radiator) for any
leaks.

Radiator
Cooling fan

If a large amount of coolant leaks, immedi-
ately contact your Lexus dealer.

The coolant level is satisfactory if it
is between the “MAX”/“FULL” and
“MIN”/“LOW” lines on the reser-
voir.



Engine

Reservoir
“MAX” line
“MIN” line
Radiator cap

If your vehicle overheats

The following may indicate that
your vehicle is overheating.



The engine coolant temperature
gauge (



P.72) is in the red zone

or a loss of engine power is expe-
rienced. (For example, the vehicle
speed does not increase.)



“Engine Coolant Temp High Stop
in a Safe Place See Owner’s
Manual” is shown on the
multi-information display.



Steam comes out from under the
hood.

Correction procedures

505

7-2. Steps to take in an emergency

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ris



Intercooler

Reservoir
“FULL” line
“LOW” line

Add coolant if necessary.

Water can be used in an emergency if

coolant is unavailable.



Engine



Intercooler

Start the engine and turn the air
conditioning system on to check
that the radiator cooling fan oper-

ate and to check for coolant leaks
from the radiator or hoses.

The fan operate when the air conditioning

system is turned on immediately after a

cold start. Confirm that the fan is operating

by checking the fan sound and air flow. If it

is difficult to check these, turn the air con-

ditioning system on and off repeatedly.

(The fan may not operate in freezing tem-

peratures.)

If the fan is not operating:
Stop the engine immediately and
contact your Lexus dealer.
If the fan is operating:
Have the vehicle inspected at the
nearest Lexus dealer.

Check if “Engine Coolant Temp
High Stop in a Safe Place See
Owner’s Manual” is shown on the
multi-information display.

If the message does not disappear:

Stop the engine and contact your Lexus

dealer.

If the message is not displayed:

Have the vehicle inspected at the nearest

Lexus dealer.

WARNING

■

When inspecting under the hood of

your vehicle

Observe the following precautions.

Failure to do so may result in serious

injury such as burns.

●

If steam is seen coming from under the

hood, do not open the hood until the

steam has subsided. The engine com-

partment may be very hot.

●

Keep hands and clothing (especially a

tie, a scarf or a muffler) away from the

fan and belts. Failure to do so may

cause the hands or clothing to be

caught, resulting in serious injury.

Also, it may operate for several min-

utes even after the engine switch is

turned off.

Lexus TX350 (2024 year). Manual in english - page 15