Lexus UX250h (2023 year). Manual in english — page 23

380

7-2. Steps to take in an emergency

■

SRS warning light (warning buzzer)

■

ABS warning light (warning buzzer)

■

Electric power steering system warning light (warning buzzer)

■

Slip indicator

Warning light

Details/Actions

Indicates a malfunction in:



The SRS airbag system;



The front passenger occupant classification system; or



The seat belt pretensioner system



Have the vehicle inspected by your Lexus dealer immediately.

Warning light

Details/Actions

(U.S.A.)

or

(Canada)

Indicates a malfunction in:



The ABS; or



The brake assist system



Have the vehicle inspected by your Lexus dealer immediately.

Warning light

Details/Actions

(red)

or

(yellow)

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



Have the vehicle inspected by your Lexus dealer immediately.

Warning light

Details/Actions

Indicates a malfunction in:



The VSC system;



The TRAC system; or



The hill-start assist control system



Have the vehicle inspected by your Lexus dealer immediately.

381

7-2. Steps to take in an emergency

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■

Parking brake indicator

■

Brake hold operated indicator (warning buzzer)

■

Intuitive parking assist OFF indicator (warning buzzer)

Warning light

Details/Actions

(flashes)

(U.S.A.)

or

(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

(flashes)

(if equipped)

When a buzzer sounds:
Indicates a malfunction in the intuitive parking assist function



Have the vehicle inspected by your Lexus dealer immediately.

When a buzzer does not sound:
Indicates that the system is temporarily unavailable, possibly due to a
sensor being dirty or covered with ice, etc.



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



P.239)

382

7-2. Steps to take in an emergency

■

RCTA OFF indicator (warning buzzer)

■

PKSB OFF indicator (warning buzzer)

■

Low fuel level warning light

■

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

*

*

: Driver’s seat belt warning buzzer:

Warning light

Details/Actions

(flashes)

(if equipped)

When a buzzer sounds:
Indicates a malfunction in the RCTA (Rear Cross Traffic Alert) function



Have the vehicle inspected by your Lexus dealer immediately.

When a buzzer does not sound:
Indicates that the rear bumper around the radar sensor is covered with
dirt, etc. (



P.232)



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



P.246)

Warning light

Details/Actions

(flashes)

(if equipped)

When a buzzer sounds:
Indicates a malfunction in the PKSB (Parking Support Brake) system



Have the vehicle inspected by your Lexus dealer immediately.

When a buzzer does not sound:
Indicates that the system is temporarily unavailable, possibly due to a
sensor being dirty or covered with ice, etc.



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



P.253)

Warning light

Details/Actions

Indicates that remaining fuel is approximately 1.6 gal. (6.0L, 1.3 Imp.gal.)
or less



Refuel the vehicle.

Warning light

Details/Actions

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



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

383

7-2. Steps to take in an emergency

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

■

Rear passengers’ seat belt reminder lights

*1

(warning buzzer)

*2

*1

: This light illuminates on the multi-information display. Regardless of whether or not a

rear passenger is present, if the power switch is turned to ON with the rear seat belts
unfastened, this light will also illuminate for a certain period of time.

*2

: Rear passengers’ seat belt warning buzzer:

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

■

Inappropriate pedal operation warning light

*

(warning buzzer)

*

: This light illuminates on the multi-information display.

Warning light

Details/Actions

Warns the rear passengers to fasten their seat belts



Fasten the seat belt.

Warning light

Details/Actions

When a buzzer sounds:



Brake Override System is malfunctioning



Drive-Start Control is malfunctioning



Drive-Start Control is operating



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



Follow the instructions displayed on the multi-information display
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.

384

7-2. Steps to take in an emergency

■

LTA indicator

*

(warning buzzer)

*

: This light illuminates on the multi-information display.

■

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 light

Details/Actions

(orange)

Indicates a malfunction in the LTA (Lane Tracing Assist)



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



P.218)

Warning light

Details/Actions

(flashes or illumi-

nates)

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



Have the vehicle inspected by your Lexus dealer 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.198, 387)

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



P.209

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.402)

Warning light

Details/Actions

(orange)

Indicates that the hybrid battery (traction battery) is low



Restart the hybrid system when starting the vehicle.

385

7-2. Steps to take in an emergency

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■

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 (front), side impact sensors

(rear), driver’s seat position sensor, driver’s

seat belt buckle switch, front passenger

occupant classification system (ECU and

sensors), rear seat belt buckle switches (if

equipped), “AIR BAG ON” indicator light,

“AIR BAG OFF” indicator light, front pas-

senger’s seat belt buckle switch, seat belt

pretensioners, airbags, interconnecting wir-

ing and power sources. (



P.31)

■

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.392

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 your Lexus dealer immedi-

ately.



If the tire pressure warning light comes

on

1

After the temperature of the tires has

lowered sufficiently, check the inflation

pressure of each tire and adjust them to

the specified level.

2

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.343)

■

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).

■

Conditions that the tire pressure warn-

ing system may not function properly



P.342

WARNING

■

If a warning light comes on or a warn-

ing buzzer sounds when a warning

message is shown on the multi-infor-

mation display

Check and follow the message shown on

the multi-information display. Failure to

do so may result in death or serious

injury.

■

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.

386

7-2. Steps to take in an emergency

WARNING

■

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.

●

Decelerate to the lowest appropriate

speed as soon as possible. Do not

drive over 50 mph (80 km/h).

●

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 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).

387

7-2. Steps to take in an emergency

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WARNING

Your vehicle has also been equipped

with a TPMS (tire pressure warning sys-

tem) malfunction indicator to indicate

when the system is not operating prop-

erly. The TPMS (tire pressure warning

system) malfunction indicator is com-

bined with the low tire pressure telltale

(tire pressure warning light). When the

system detects a malfunction, the telltale

will flash for approximately one minute

and then remain continuously illumi-

nated. This sequence will continue upon

subsequent vehicle start-ups as long as

the malfunction exists. When the mal-

function indicator is illuminated, the sys-

tem 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

functioning 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 alter-

nate tires and wheels allow the TPMS

(tire pressure warning system) to con-

tinue 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.

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 your
Lexus dealer.

A

388

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 a message about an operation is

shown

●

If a message about an operation of the

accelerator pedal or brake pedal is

shown

• A warning message about an operation

of the brake pedal may be shown while

the driving assist systems such as PCS

(Pre-Collision system) or the dynamic

radar cruise control with full-speed range

is operating.

If a warning message is shown, be sure to

decelerate the vehicle or follow an

instruction shown on the multi-informa-

tion display.

• A warning message is shown when Brake

Override System operates. (



P.152)

• A warning message is shown when

Drive-Start Control or Parking Support

Brake (if equipped) (



P.157, 249)

operates. Follow the instructions on the

multi-information display.

●

If a message about an operation of the

power switch is shown

An instruction for operation of the power
switch is shown when the incorrect proce-
dure for starting the hybrid system is per-
formed or the power switch is operated
incorrectly.
Follow the instructions shown on the multi-
information display to operate the power

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 proce-
dure 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

389

7-2. Steps to take in an emergency

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switch again.

●

If a message about a shift lever operation

is shown

To prevent the shift lever from being oper-
ated incorrectly or the vehicle from moving
unexpectedly, a message that requires
shifting the shift lever may be shown on the
multi-information display.
In that case, follow the instruction of the
message and shift the shift lever.

●

If a message or image about an

open/close state of a part or replenish-

ment of a consumable is shown

Confirm the part indicated by the multi-
information display or a warning light, and
then perform the coping method such as
closing the open door or replenishing a
consumable.

■

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 Output

power reduced” 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.402

■

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

390

7-2. Steps to take in an emergency

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

to normal.

■

If “Radar Cruise Control Unavailable

See Owner’s Manual” is shown

The dynamic radar cruise control with full-

speed range system is suspended tempo-

rarily or until the problem shown in the mes-

sage is resolved. (causes and coping

methods:



P.198)

■

If “Radar Cruise Control Unavailable” is

shown

The dynamic radar cruise control with full-

speed range system cannot be used tempo-

rarily. 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.198, 378)

●

PCS (Pre-Collision System)

●

LTA (Lane Tracing Assist)

●

AHB (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.198, 378)

●

PCS (Pre-Collision System)

●

LTA (Lane Tracing Assist)

●

Dynamic radar cruise control with full-

speed range

■

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.263)

■

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.322)

*

: Refer to the separate “Scheduled Main-

tenance” or “Owner’s Manual Supple-
ment” for the maintenance interval
applicable to your vehicle.

■

If “Maintenance Required Visit Your

Dealer” 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.322)

*

: Refer to the separate “Scheduled Main-

tenance” or “Owner’s Manual Supple-
ment” for the maintenance interval
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.333)

■

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 mes-

sage. (



P.333)

391

7-2. Steps to take in an emergency

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■

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

●

If any of the following messages are

shown on the multi-information display,

follow the instructions.

• “Engine Coolant Temp High” (



P.402)

• “Front Camera Unavailable” (



P.198)

●

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”

• “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 your Lexus

dealer.

• “Braking Power Low”

• “Charging System Malfunction”

• “Oil Pressure Low”

●

If any of the following messages are

shown on the multi-information display,

the vehicle may have run out of fuel. Stop

the vehicle in a safe place and, if the fuel

level is low, refuel the vehicle. (



P.65)

• “Hybrid system stopped”

• “Engine stopped”

●

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.398)

*

: 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.

• Cleaning the hybrid battery (traction bat-

tery) air intake vent (



P.356)

If the warning message is shown even if

the vent is cleaned, have the vehicle

inspected by your Lexus dealer.

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 your Lexus dealer.

■

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 your Lexus dealer.

392

7-2. Steps to take in an emergency

Take your vehicle to the nearest Lexus
dealer or authorized tire dealer as
soon as possible if any tire goes flat.

The vehicle can be driven for a maximum
of 100 miles (160 km) at a speed below 50
mph (80 km/h) after the tire pressure
warning light comes on. (



P.379)

A run-flat tire has a

mark on the

side wall.

■

In some condition (such as at high tem-

peratures)

You cannot continue driving for up to 100

miles (160 km).

■

For the detailed information on run-flat

tires



P.341

If you have a flat tire

Your vehicle is not equipped with a
spare tire, but instead you can con-
tinue driving the vehicle with run-
flat tires even if any tire goes flat.
In this case, slow down and drive
with extra caution.

Run-flat tires

NOTICE

■

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.

■

When driving over bumps

If a vehicle has a flat tire, the vehicle

height will be lower than usual. Ensure

that nothing strikes the bottom of the

vehicle.

■

To avoid damaging the tire pressure

warning valves and transmitters

When a tire is repaired with liquid seal-

ants, the tire pressure warning valve and

transmitter may not operate properly. If a

liquid sealant is used, contact your Lexus

dealer or other qualified service shop as

soon as possible. Make sure to replace

the tire pressure warning valve and

transmitter when replacing the tire.

(



P.342)

393

7-2. Steps to take in an emergency

7

W

hen

tro
ub

le

ar

ise

s

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



The electronic key may not be func-
tioning properly. (



P.396)



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



P.65)



There may be a malfunction in the
immobilizer system. (



P.68)



The hybrid system may be malfunc-
tioning due to an electrical problem
such as electronic key battery
depletion or a blown fuse. However,
depending on the type of malfunc-
tion, an interim measure is available
to start the hybrid system.

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



The 12-volt battery may be dis-

charged. (



P.398)



The 12-volt battery terminal con-
nections may be loose or corroded.
(



P.336)

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



The 12-volt battery may be dis-
charged. (



P.398)



One or both of the 12-volt battery
terminals may be disconnected.
(



P.336)

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

When the hybrid system does not start,
the following steps can be used as an
interim measure to start the hybrid sys-
tem if the power switch is functioning
normally.
Do not use this starting procedure
except in cases of emergency.

1

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



P.174)

Parking brake indicator will come on.

2

Shift the shift lever to P.

3

Turn the power switch to ACC.

If the hybrid system will not
start

Reasons for the hybrid system not
starting vary depending on the situ-
ation. Check the following and per-
form the appropriate procedure:

The hybrid system will not start
even though the correct starting
procedure is being followed.
(



P.163)

The interior lights and head-
lights are dim, or the horn does
not sound or sounds at a low vol-
ume.

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

Starting the hybrid system in an
emergency

394

7-2. Steps to take in an emergency

4

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

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

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.

395

7-2. Steps to take in an emergency

7

W

hen

tro
ub

le

ar

ise

s

1

Remove the cover inside the lug-
gage compartment by inserting a
screwdriver.

When removing the cover, to prevent

damage, cover the tip of the screwdriver

with a rag.

2

Pull the lever.

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 proce-
dure can be used to open the fuel
filler door.

Opening the fuel filler door

NOTICE

■

When opening the fuel filler door

manually

●

Do not open the fuel filler door manu-

ally except in an emergency. Fuel may

overflow.

●

Using the lever to open the fuel filler

door may not allow for an adequate

reduction in fuel tank pressure before

refueling. To prevent fuel from spilling

out, turn the cap slowly when remov-

ing it.

●

During refueling, fuel may spill out

from the filler opening due to air being

discharged from inside the fuel tank.

Therefore, fill the fuel tank carefully

and slowly.