Lexus UX (2022 year). Manual in english — page 24

418

7-2. Steps to take in an emergency

Brake Override System warning light/Drive-Start Control warning
light/PKSB warning light

(warning buzzer)

: This light illuminates on the multi-information display.

LTA indicator

(warning buzzer)

: This light illuminates on the multi-information display.

Warning light

Details/Actions

When a buzzer sounds:



Brake Override System is malfunctioning;



Drive-Start Control is operating;



Drive-Start Control is malfunctioning; or



Parking Support Brake function (static objects) (if equipped) is oper-
ating



Follow the instructions displayed on the multi-information display
and head-up display (if equipped).

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



Release the accelerator pedal and depress the brake pedal.

Warning light

Details/Actions

(orange)

(if equipped)

Indicates a malfunction in the LTA (Lane Tracing Assist)



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



P.248)

419

7-2. Steps to take in an emergency

Wh
en

troubl
e ar
ises

PCS warning light (warning buzzer)

Hybrid system overheat warning light

(warning buzzer)

: This light illuminates on the multi-information display.

Low traction battery charge warning light

(warning buzzer)

: This light illuminates on the multi-information display.

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

Warning light

Details/Actions

(flashes or illumi-

nates)

(if equipped)

When a buzzer sounds simultaneously:
Indicates a malfunction has occurred in the PCS (Pre-Collision Sys-
tem).



Have the vehicle inspected by any authorized Lexus retailer or
Lexus authorized repairer, or any reliable repairer immediately.

When a buzzer does not sound:
The PCS (Pre-Collision System) has become temporarily unavailable,
corrective action may be necessary.



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



P.229, 422)

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



P.239

Warning light

Details/Actions

Indicates the hybrid system has overheated
This light may be displayed when driving under severe operating condi-
tions. (For example, when driving up a long steep hill.)



Stop the vehicle in a safe place.
Handling method (



P.458)

Warning light

Details/Actions

(orange)

Indicates that the hybrid battery (traction battery) is low



Restart the hybrid system when starting the vehicle.

420

7-2. Steps to take in an emergency

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.

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.426, 439, 447

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 pres-

sure warning system. Have the vehicle

inspected by any authorized Lexus retailer

or Lexus authorized repairer, or any reli-

able repairer immediately.



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.384)

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

(vehicles with 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.383

WARNING

If both the ABS and the brake system

warning lights remain on

Stop your vehicle in a safe place immedi-

ately and contact any authorized Lexus

retailer or Lexus authorized repairer, or

any reliable repairer.

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 (vehicles without run-flat

tires)

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.

421

7-2. Steps to take in an emergency

Wh
en

troubl
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WARNING

Stop your vehicle in a safe place as

soon as possible. Check and adjust the

tire inflation 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 any

authorized Lexus retailer or Lexus

authorized repairer, or any reliable

repairer.

Avoid abrupt maneuvering and brak-

ing.

If the vehicle tires deteriorate, you

could lose control of the steering

wheel or the brakes.

If the tire pressure warning light

comes on (vehicles with run-flat tires)

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.

Decelerate to the lowest appropriate

speed as soon as possible. Do not

drive over 80 km/h (50 mph).

Check and adjust the tire inflation

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. Have the flat tire replaced by

the nearest any authorized Lexus

retailer or Lexus authorized repairer,

or any reliable repairer.

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.

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.

422

7-2. Steps to take in an emergency

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.

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 following actions
have been performed, contact any
authorized Lexus retailer or Lexus
authorized repairer, or any reliable
repairer.

423

7-2. Steps to take in an emergency

Wh
en

troubl
e ar
ises

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 any authorized Lexus retailer or Lexus authorized
repairer, or any reliable repairer 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.
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 “Hybrid System Stopped Steering

Power Low” is displayed

This message is displayed if the hybrid sys-

tem 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 “Hybrid System Overheated

Reduced Output Power” is displayed

This message may be displayed when driv-

ing under severe operating conditions. (For

example, when driving up a long steep hill.)

Handling method:



P.458

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

electrical components, their condition, or indi-
cates the need for maintenance

• Indicates a situation, such as when an operation

has been performed incorrectly, or indicates
how to perform an operation correctly

424

7-2. Steps to take in an emergency

If “Traction Battery Needs to be Pro-

tected Refrain From the Use of N Posi-

tion” is displayed

This message may be displayed when the

shift lever is in N.
As the hybrid battery (traction battery) can-

not be charged when the shift lever is in N,

shift the shift lever to P when the vehicle is

stopped.

If “Traction Battery Needs to be Pro-

tected Shift into P to Restart” is dis-

played

This message is displayed when the hybrid

battery (traction battery) charge has

become extremely low because the shift

lever has been left in N for a certain amount

of time.
When operating the vehicle, shift to P and

restart the hybrid system.

If “Shift to P Before Exiting Vehicle” is

shown

This message is displayed when the driver’s

door is opened without turning the power

switch off with the shift lever in any position

other than P.
Shift the shift lever to P.

If “Shift is in N Release accelerator

before shifting” is displayed

The accelerator pedal has been depressed

when the shift lever is in N.
Release the accelerator pedal and shift the

shift lever to D, S or R.

If “Press brake when vehicle is stopped

Hybrid system may overheat” is dis-

played

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 over-

heat. Release the accelerator pedal and

depress the brake pedal.

If “Auto Power Off To Conserve Bat-

tery” is displayed

Power was turned off due to the automatic

power off function. Next time when starting

the hybrid system, operate the hybrid sys-

tem for approximately 5 minutes to

recharge the 12-volt battery.

If “High Power Consumption Power to

Climate Temporarily Limited” is dis-

played

Turn off unnecessary electronic equipment

to reduce power consumption.
Please wait until the power supply returns

to normal.

If “Radar Cruise Control Temporarily

shown

The dynamic radar cruise control with full-

speed range (if equipped) system is sus-

pended temporarily or until the problem

shown in the message is resolved. (causes

and coping methods:



P.229)

If “Radar Cruise Control Unavailable” is

shown

The dynamic radar cruise control with full-

speed range (if equipped) 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.229, 412)

PCS (Pre-Collision System) (if equipped)

LTA (Lane Tracing Assist) (if equipped)

AHS (Adaptive High-beam System) (if

equipped)

AHB (Automatic High Beam) (if

equipped)

RSA (Road Sign Assist) (if equipped)

Dynamic radar cruise control with full-

speed range (if equipped)

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.229, 412)

PCS (Pre-Collision System) (if equipped)

LTA (Lane Tracing Assist) (if equipped)

425

7-2. Steps to take in an emergency

Wh
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Dynamic radar cruise control with full-

speed range (if equipped)

If “AWD System Overheated Switching

to 2WD Mode” or “AWD System

Overheated 2WD Mode Engaged” is

shown on the multi-information display

(AWD models)

This message may be displayed when high

load driving is continued. (



P.308)

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.374)

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 any authorized Lexus retailer or

Lexus authorized repairer, or any reliable

repairer. After changing the engine oil,

make sure to reset the message. (



P.374)

If a message that indicates the need for

visiting any authorized Lexus retailer or

Lexus authorized repairer, or any reli-

able repairer. is displayed

The system or part shown on the multi-

information display is malfunctioning. Have

the vehicle inspected by any authorized

Lexus retailer or Lexus authorized repairer,

or any reliable repairer 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,

follow the instructions.

• “Engine Coolant Temp High” (



P.458)

• “Exhaust Filter Full” (



P.303)

• “Front Camera Unavailable” (



P.229)

• “Radar Cruise Control Unavailable”

(



P.229)

If any of the following messages are

shown on the multi-information display, it

may indicate a malfunction. Have the

vehicle inspected by any authorized

Lexus retailer or Lexus authorized

repairer, or any reliable repairer immedi-

ately.

• “Entry & Start System Malfunction”

• “Hybrid system malfunction”

• “Check Engine”

• “Hybrid battery system malfunction”

• “Accelerator system malfunction”

If any of the following messages are

shown on the multi-information display, it

may indicate a malfunction. Immediately

stop the vehicle and contact any autho-

rized Lexus retailer or Lexus authorized

repairer, or any reliable repairer.

• “Braking Power Low”

• “Charging System Malfunction”

• “Oil Pressure Low”

If “Low Auxiliary Battery See Owner’s

Manual” is shown

• When the display goes off after several

seconds

Maintain the hybrid system operation for
more than 15 minutes and charge the 12-
volt battery.
• When the display does not go off:
Start up the hybrid system using the proce-
dures for “If the 12-volt battery is dis-
charged” (



P.453)

: Displays for about 6 seconds

If “Maintenance required for Traction

battery cooling parts See owner’s man-

ual” is shown, the filter may be clogged,

the air intake vent may be blocked, or

there may be a gap in the duct. There-

fore, perform the following correction

procedure.

• If the air intake vent and filter of the

hybrid battery (traction battery) are dirty,

perform the procedure on P.392to clean

them.

• If the warning message is shown when

the air intake vent and filter of the hybrid

battery (traction battery) are not dirty,

have the vehicle inspected by any autho-

rized Lexus retailer or Lexus authorized

repairer, or any reliable repairer.

426

7-2. Steps to take in an emergency



Stop the vehicle in a safe place on a

NOTICE

If “High Power Consumption Power

to Climate Temporarily Limited” is

displayed frequently

There is a possible malfunction relating

to the charging system or the 12-volt bat-

tery may be deteriorating. Have the vehi-

cle inspected by any authorized Lexus

retailer or Lexus authorized repairer, or

any reliable repairer.

If “Low Auxiliary Battery” is displayed

frequently

The 12-volt battery may have deterio-

rated. As the battery may discharge in

this state when left unattended, have the

battery inspected by any authorized

Lexus retailer or Lexus authorized

repairer, or any reliable repairer.

If you have a flat tire (vehi-
cles with emergency tire
puncture repair kit)

Your vehicle is not equipped with a
spare tire, but instead is equipped
with an emergency tire puncture
repair kit.
A puncture caused by a nail or
screw passing through the tire
tread can be repaired temporarily
using the emergency tire puncture
repair kit.

(The kit contains a bottle of sealant.
The sealant can be used only once
to temporarily repair one tire with-
out removing the nail or screw from
the tire.) Depending on the damage
condition of the flat tire, it may not
be able to repaired with the emer-
gency tire puncture repair kit.

After temporarily repairing the tire
with the kit, have the tire repaired
or replaced by any authorized
Lexus retailer or Lexus authorized
repairer, or any reliable repairer.

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 repairing the vehicle

427

7-2. Steps to take in an emergency

Wh
en

troubl
e ar
ises

hard, flat surface.



Set the parking brake.



Shift the shift lever to P.



Stop the hybrid system.



Turn on the emergency flashers.



Check the degree of the tire dam-
age.

A tire should only be repaired with the
emergency tire puncture repair kit if the
damage is caused by a nail or screw pass-
ing through the tire tread.
• Do not remove the nail or screw from

the tire. Removing the object may widen
the opening and make emergency
repair with the repair kit impossible.

• To avoid sealant leakage, move the vehi-

cle until the area of the puncture, if
known, is positioned at the top of the tire.

A flat tire that cannot be repaired with

the emergency tire puncture repair kit

In the following cases, the tire cannot be

repaired with the emergency tire puncture

repair kit. Contact any authorized Lexus

retailer or Lexus authorized repairer, or any

reliable repairer.

When the tire is damaged due to driving

without sufficient air pressure

When there are any cracks or damage at

any location on the tire, such as on the

side wall, except the tread

When the tire is visibly separated from

the wheel

When the cut or damage to the tread is 4

mm (0.16 in.) long or more

When the wheel is damaged

When two or more tires have been punc-

tured

When more than one sharp objects such

as nails or screws have passed through

the tread on a single tire

428

7-2. Steps to take in an emergency



2WD models

Emergency tire puncture repair kit

Towing eyelet

Location of the emergency tire puncture repair kit

A
B

429

7-2. Steps to take in an emergency

Wh
en

troubl
e ar
ises



AWD models

Emergency tire puncture repair kit

Towing eyelet

Bottle

Sticker

Compressor

A
B

Emergency tire puncture repair
kit components

430

7-2. Steps to take in an emergency

Air pressure gauge

Compressor switch

Power plug

Hose

Air release cap

Emergency tire puncture repair kit

The sealant stored in the emergency tire

puncture repair kit can be used only once

to temporarily repair a single tire. If the

sealant in the bottle and other parts of the

kit have been used and need to be

replaced, contact any authorized Lexus

retailer or Lexus authorized repairer, or

any reliable repairer.

The compressor can be used repeatedly.

The sealant can be used when the outside

temperature is from -30°C (-22°F) to

60°C (140°F).

The kit is exclusively designed for size

and type of tires originally installed on

your vehicle. Do not use it for tires that a

different size than the original ones, or for

any other purposes.

If the sealant gets on your clothes, it may

stain.

If the sealant adheres to a wheel or the

surface of the vehicle body, the stain may

not be removable if it is not cleaned at

once. Immediately wipe away the sealant

with a wet cloth.

During operation of the repair kit, a loud

operation noise is produced. This does

not indicate a malfunction.

Do not use to check or to adjust the tire

pressure.

Note for checking the emergency tire

puncture repair kit

Check the sealant expiry date occasion-

ally. The expiry date is shown on the bot-

tle.

Do not use sealant whose expiry date has

already passed. Otherwise, repairs con-

ducted using the emergency tire punc-

ture repair kit may not be performed

properly.

The sealant should be replaced before

the expiry date. Contact any authorized

Lexus retailer or Lexus authorized

repairer, or any reliable repairer for

replacement.

A
B
C
D

WARNING

If you have a flat tire

Driving even a short distance with a flat

tire can damage the tire and the wheel

beyond repair.
Driving with a flat tire may cause a cir-

cumferential groove on the side wall. In

such a case, the tire may explode when

using a repair kit.

Caution while driving

Store the repair kit in the luggage

compartment. Injuries may result in the

event of an accident or sudden brak-

ing.

The repair kit is exclusively only for

your vehicle. Do not use repair kit on

other vehicles, which could lead to an

accident causing death or serious

injury.

Do not use repair kit for tires that are

different size than the original ones, or

for any other purpose. If the tires have

not been completely repaired, it could

lead to an accident causing death or

serious injury.

Precautions for use of the sealant

Ingesting the sealant is hazardous to

your health. If you ingest sealant, con-

sume as much water as possible, then

immediately consult a doctor.

If sealant gets in eyes or adheres to

skin, immediately wash it off with

water. If discomfort persists, consult a

doctor.

431

7-2. Steps to take in an emergency

Wh
en

troubl
e ar
ises

Pull the lever upwards and open
the deck board.

Unhook the string on the backside
of the deck board.

Attach the string to the luggage
cover hook on the back door.

Remove the deck mat.

Take out the emergency tire punc-
ture repair kit.



2WD models



AWD models

Take out the repair kit from the
plastic bag.

Attach the sticker enclosed with the bottle

on the specified locations. (See step

Taking out the emergency tire
puncture repair kit

Emergency repair procedure

432

7-2. Steps to take in an emergency

Remove the hose and take out the
power plug from the compressor.

Connect the bottle to the compres-
sor.

Insert and connect the bottle straight into

the compressor as shown in the illustration,

and check that the claws of the bottle are

concealed in the holes.

Connect the hose to the bottle.

As shown in the illustration, make sure the

hose is connected securely to the bottle.

Remove the valve cap from the
valve of the punctured tire.

Extend the hose. Remove the air
release cap from the hose.

You will use the air release cap again.

433

7-2. Steps to take in an emergency

Wh
en

troubl
e ar
ises

Therefore keep it in a safe place.

Connect the hose to the valve.

Screw the end of the hose clockwise as far

as possible.

Make sure that the compressor
switch is off.

Connect the power plug to the
power outlet socket. (



P.351)



Front



Rear

Attach the sticker provided with
the tire puncture repair kit to a
position easily seen from the
driver’s seat.

Check the specified tire inflation
pressure.

Tire inflation pressure is specified on the

label as shown. (



P.471)

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