Content .. 22 23 24 25 ..

Lexus RX350 (2022 year). Manual in english - page 24

399

7-2. Steps to take in an emergency

When trouble

ari

ses

■

Parking brake indicator

■

Brake hold operated indicator

■

Master warning light

■

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 system monitors the air-

bag sensor assembly, front impact sensors,

side impact sensors (front door), side

impact sensors (rear), driver’s seat position

sensor, driver’s seat belt buckle switch, front

passenger occupant classification system

(ECU and sensors), “AIR BAG ON” indica-

tor light, “AIR BAG OFF” indicator light,

front passenger’s seat belt buckle switch,

driver’s seat belt pretensioner, front passen-

ger’s seat belt pretensioner and force lim-

iter, airbags, interconnecting wiring and

power sources. (



P.30)

■

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.

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 when the parking brake is not released. If the light
turns off after the parking brake is fully released, the system is operating
normally.

Warning light

Details/Actions

(flashes)

Indicates a malfunction in the brake hold system



Have the vehicle inspected by your Lexus dealer immediately.

Warning light

Details/Actions

A buzzer sounds and the warning light comes on and flashes to indicate
that the master warning system has detected a malfunction.



P.402

400

7-2. Steps to take in an emergency

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.406

If none of the tires are punctured:

Turn the engine switch off then turn it to

IGNITION ON mode. 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-

sure of each tire is at the specified level

and perform initialization. (



P.361)

If the warning light does not turn off several

minutes after the initialization has been per-

formed, 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.360

■

Customization

Some functions can be customized.

(



P.449)

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.

401

7-2. Steps to take in an emergency

n t

ris

WARNING

■

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.

■

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.

402

7-2. Steps to take in an emergency

WARNING

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 of system malfunc-
tions, incorrectly performed opera-
tions, and messages that indicate a
need for maintenance. When a
message is shown, perform the cor-
rection procedure appropriate to
the message.

Except F SPORT models:

Master warning light

The master warning light also comes on
or flashes in order to indicate that a mes-
sage is currently being displayed on the
multi-information display.

Multi-information display

Follow the instructions of the message
on the multi-information display.
If any of the warning messages are
shown again after the appropriate
actions have been performed, contact
your Lexus dealer.

F SPORT models:

403

7-2. Steps to take in an emergency

When trouble

ari

ses

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

Master warning light

The master warning light also comes on
or flashes in order to indicate that a mes-
sage is currently being displayed on the
multi-information display.

Multi-information display

Follow the instructions of the message
on the multi-information display.
If any of the warning messages are
shown again after the appropriate
actions have been performed, contact
your Lexus dealer.

Messages and warnings

Warning buzzer

Warning

Comes on

Sounds

Indicates an important situation, such as when a sys-
tem related to driving is malfunctioning or that dan-
ger may result if the correction procedure is not
performed

Flashes

Sounds

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

404

7-2. Steps to take in an emergency



In some situations, the master warning light and warning buzzer may not oper-
ate as specified. In this case, follow the instructions displayed in the warning
message.



If a warning light comes on or flashes at the same time that a warning message is
displayed, take corrective action according to the warning light. (



P.393)

: 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 “Shift to P Before Exiting Vehicle” is

displayed

Message is displayed when the driver’s

door is opened without turning the engine

switch off with the shift lever in any position

other than P.
Shift the shift lever to P.

■

If “Power Turned Off to Save Battery” is

displayed

This message is displayed when the power

was cut off due to the automatic power off

function. The next time the engine is started,

increase the engine speed slightly and

maintain it at that speed for approximately

5 minutes to recharge the battery.

■

If “AWD System Overheated Switching

to 2WD Mode” or “AWD System Over-

heated 2WD Mode Engaged” is dis-

played (AWD models)

This message may be displayed when driv-

ing under extremely high load conditions.
Drive the vehicle at low speeds or stop the

vehicle in a safe place with the engine run-

ning until the message is cleared.
If the message is not cleared, have the vehi-

cle inspected by your Lexus dealer.

■

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

●

AFS (Adaptive Front-lighting System) (if

equipped)

●

The automatic headlight leveling system

●

Automatic High Beam

■

If “Radar Cruise Control Unavailable

The dynamic radar cruise control with

full-speed range system is suspended tem-

porarily or until the problem shown in the

message is resolved. (causes and coping

methods:



P.202)

Comes on

Does not sound

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

Flashes

Does not sound

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

Warning buzzer

Warning

405

7-2. Steps to take in an emergency

When trouble

ari

ses

■

If “Radar Cruise Control Unavailable” is

displayed

The dynamic radar cruise control with

full-speed range system cannot be used

temporarily. Use the system when it

becomes available again.

■

If a message that indicates the malfunc-

tion of front camera is displayed

The following systems may be suspended

until the problem shown in the message is

resolved. (



P.202, 398)

●

PCS (Pre-Collision system)

●

LTA (Lane Tracing Assist)

●

Automatic High Beam

●

RSA (Road Sign Assist) (if equipped)

●

Dynamic radar cruise control with

full-speed range

■

If a message that indicates the malfunc-

tion of radar sensor is displayed

The following systems may be suspended

until the problem shown in the message is

resolved. (



P.202, 393)

●

PCS (Pre-Collision system)

●

LTA (Lane Tracing Assist)

●

Dynamic radar cruise control with

full-speed range

■

If “Check Fuel Cap” is displayed (if

equipped)

The fuel tank cap is not properly installed.

Correctly install the fuel tank cap.

■

If “Maintenance Required Soon” is dis-

played (U.S.A. only)

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.342)

: Refer to the separate “Scheduled Main-

■

If “Maintenance Required Visit Your

Dealer” is displayed (U.S.A. only)

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.342)

: Refer to the separate “Scheduled Main-

■

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.353)

■

If “Oil Maintenance Required” is dis-

played

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.353)

■

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

played

●

“Engine Coolant Temp High” is shown on

the multi-information display, follow the

instructions. (



P.426)

●

“Transmission Fluid Temp High” is shown

on the multi-information display, the auto-

matic transmission fluid temperature may

be too high. Immediately stop the vehicle

406

7-2. Steps to take in an emergency

in a safe place, shift the shift lever to P

with the engine running and wait until the

message is cleared. If the message is not

cleared, contact your Lexus dealer.

●

If the following message is 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”

●

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”

• “Charging System Malfunction”

• “Oil Pressure Low”



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



Set the parking brake.



Shift the shift lever to P.



Stop the engine.



Turn on the emergency flashers.
(



P.384)

NOTICE

■

If “High Power Consumption Partial

Limit On AC/Heater Operation” is

displayed frequently

There is a possible malfunction relating

to the charging system or the battery

may be deteriorating. Have the vehicle

inspected by your Lexus dealer.

If you have a flat tire

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

For details about tires:



P.357

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

407

7-2. Steps to take in an emergency

When trouble

ari

ses



RX350

Jack handle
Wheel nut wrench
Spare tire

Wheel lock key

(if equipped)

Jack
Towing eyelet (if equipped)

: Documentation relating to the wheel lock key, such as the registration and I.D. card, is

inside the glove box.

Location of the spare tire, jack and tools

A
B
C
D

E
F

408

7-2. Steps to take in an emergency



RX350L

Jack handle
Wheel nut wrench
Spare tire
Jack
Towing eyelet
Adapter socket

A
B
C
D

E
F

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.

409

7-2. Steps to take in an emergency

n t

ris

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.

■

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.

Secure the deck board using the
hook. (



P.311)

Disengage the hook and take out
the jack.

RX350: Remove the wheel nut wrench

and then the jack.

RX350L: Remove the jack handle and

then the jack.

WARNING

●

Do not raise the vehicle while some-

one is inside.

●

When raising the vehicle, do not put an

object on or under the jack.

●

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.

Wheel lock nut (if equipped)

NOTICE

■

When using a wheel lock key

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

410

7-2. Steps to take in an emergency



RX350

Secure the deck board using the
hook. (



P.311)

Loosen the center fastener that
secures the spare tire.



RX350L

Remove the deck board.

Remove the cover.

Attach the adapter socket to the
spare tire clamp bolt.

Assemble the jack handle exten-
sion.

Connect the jack handle to the
adapter socket. Turn the jack han-
dle counterclockwise.

The tire will be lowered completely to the

ground.
Turn the jack handle slowly to lower the

spare tire. If the handle is turned quickly,

the wire cable may come off the shaft

inside the unit and the tire may not be low-

ered.
If the spare tire cannot be lowered:



P.412

Pull out the spare tire and stand it
against the bumper.

Taking out the spare tire

411

7-2. Steps to take in an emergency

n t

ris

Fully depress the secondary latch

and remove the holding bracket
from the hoist assembly .

Tilt the bracket and pass it
through the wheel opening. Then
remove the hoist assembly .

Chock the tires.

Slightly loosen the wheel nuts (one
turn).

For vehicles with wheel lock nuts, loosen

the wheel lock nut first.

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

WARNING

■

When storing the spare tire

Be careful not to catch fingers or other

body parts between the spare tire and

the body of the vehicle.

A
B

Replacing a flat tire

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

412

7-2. Steps to take in an emergency

The jack point guides are located under

the rocker panel. They indicate the jack

point positions.

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.

■

If the spare tire cannot be lowered

(RX350L)

If the spare tire cannot be lowered, it may

not have been stowed properly. Perform the

following procedure:

Fully tighten the spare tire clamp bolt by

turning the jack handle clockwise until

two clicks are heard and the jack handle

skips.

Turn the jack handle counterclockwise

to lower the spare tire.

If the spare tire still cannot be lowered,

attempt to fully tighten the spare tire clamp

bolt again by turning the jack handle clock-

wise. Then turn it counterclockwise at least

2 turns to lower the spare tire.

If the spare tire still cannot be lowered, the

wire cable may be severed. Have the vehi-

cle inspected by your Lexus dealer.

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.

413

7-2. Steps to take in an emergency

n t

ris

Remove any dirt or foreign matter
from the wheel contact surface.

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

●

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. In

addition, the oil or grease can cause

the wheel nuts to loosen and the wheel

may fall off, causing an accident and

resulting in death or serious injury.

Remove any oil or grease from the

wheel bolts or wheel nuts.

• Have the wheel nuts tightened with a

torque wrench to 76 ft•lbf (103 N•m,

10.5 kgf•m) as soon as possible after

changing wheels.

• 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.

●

Observe the following precautions.

(RX350L)

Failure to do so may result in serious

injury:

• Do not try to remove the wheel orna-

ment by hand. Take due care in han-

dling the ornament to avoid

unexpected personal injury.

• Lower the spare tire completely to the

ground before removing it from under

the vehicle.

■

Replacing a flat tire for vehicles with

power back door

In cases such as when replacing tires,

make sure to turn off the power back

door main switch (



P.449). Failure to

do so may cause the back door to oper-

ate unintentionally if the power back

door switch is accidentally touched,

resulting in hands and fingers being

caught and injured.

Installing the spare tire

414

7-2. Steps to take in an emergency

Tapered portion
Disc wheel seat

Lower the vehicle.

Firmly tighten each wheel nut two
or three times in the order shown in
the illustration.

For vehicles with wheel lock nuts, tighten

the wheel lock nut last.

Tightening torque:

76 ft•lbf (103 N•m, 10.5 kgf•m)

RX350: Stow the flat tire, tire jack
and all tools.
RX350L:



P.414

Remove the center wheel orna-
ment by pushing from the reverse
side.

Be careful not to lose the wheel ornament.

Stand the tire against the bumper
with the inner surface facing
toward you. Pass the hoist assembly

and holding bracket through

the wheel opening.

WARNING

■

Stowing the flat tire

Failure to follow steps listed under stow-

ing the tire may result in damage to the

spare tire carrier and loss of the tire,

which could result in serious injury or

death.

A
B

Stowing the flat tire, jack and all
tools (RX350L)

Content .. 22 23 24 25 ..