LEXUS LS 500H (2019 year). Instruction - part 27

428

7-2. Steps to take in an emergency

LS500h_OM_(U)_1809

: Driver’s seat belt warning buzzer:

The driver’s seat belt warning buzzer sounds to alert the driver that his or her seat belt is not
fastened. Once the power switch is turned to ON mode, the buzzer sounds for 6 seconds.
If the vehicle reaches a speed of 12 mph (20 km/h), the buzzer sounds once. If the seat belt
is still unfastened after 24 seconds, the buzzer will sound intermittently for 6 seconds. Then,
if the seat belt is still unfastened, the buzzer will sound in a different tone for 90 more sec-
onds.
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. The buzzer sounds once if the vehicle reaches a speed of 12
mph (20 km/h). If the seat belt is still unfastened after 24 seconds, the buzzer will sound
intermittently for 6 seconds. Then, if the seat belt is still unfastened, the buzzer will sound in
a different tone for 90 more seconds.

■

Rear passengers’ seat belt reminder lights

(warning buzzer)

: This light illuminates on the center panel.

: Rear passengers’ seat belt warning buzzer:

The rear passengers’ seat belt warning buzzer sounds to alert the rear passengers that his
or her seat belt is not fastened. The buzzer sounds once if the vehicle reaches a speed of 12
mph (20 km/h). If the seat belt is still unfastened after 24 seconds, the buzzer will sound
intermittently for 6 seconds. Then, if the seat belt is still unfastened, the buzzer will sound in
a different tone for 30 more seconds.

■

Tire pressure warning light

Warning light

Details/Actions

Warns the rear passengers to fasten their seat belts
 Fasten the seat belt.

Warning light

Details/Actions

When the light comes on after blinking for approximately 1 minute:
Malfunction in the tire pressure warning system
 Have the system checked by your Lexus dealer.
When the light comes on:
Low tire inflation pressure such as
Natural causes
Flat tire
 Immediately stop the vehicle in a safe place.

Handling method (

P.432)

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7-2. Steps to take in an emergency

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When trouble

ari

ses

■

LTA indicator (warning buzzer)

■

Intuitive parking assist OFF indicator (warning buzzer)

■

RCTA OFF indicator (warning buzzer)

■

RCD OFF indicator (warning buzzer)

Warning light

Details/Actions

(orange)

Indicates a malfunction in the LTA (Lane Tracing Assist)
 Follow the instructions displayed on the multi-information display.

(

P.245)

Warning light

Details/Actions

(flashes)

Indicates a malfunction in the intuitive parking assist function
 Have the vehicle inspected by your Lexus dealer immediately.
Indicates that the system is temporarily unavailable, possibly due to a
sensor being dirty or covered with ice, etc.
 Follow the instructions displayed on the multi-information display.

(

P.267)

Warning light

Details/Actions

(flashes)

Indicates a malfunction in the RCTA (Rear Cross Traffic Alert) function
 Have the vehicle inspected by your Lexus dealer immediately.
Indicates that the rear bumper around the radar sensor is covered with
dirt, etc. (

P.259)

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

(

P.272)

Warning light

Details/Actions

(flashes)

(if equipped)

When a buzzer sounds:
Indicates a malfunction in the RCD (Rear Camera Detection) function
 Have the vehicle inspected by your Lexus dealer immediately.
When a buzzer does not sound:
Indicates that the function temporarily cannot be used due to the cam-
era being dirty, etc.
 Follow the instructions displayed on the multi-information display.

(

P.276, 43 4)

430

7-2. Steps to take in an emergency

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■

PKSB OFF indicator (warning buzzer)

■

PCS warning light

■

Slip indicator

Warning light

Details/Actions

(flashes)

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.282, 434)

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.
If 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.204, 210, 43 7)

If the PCS (Pre-Collision System) or VSC (Vehicle Stability Control)
system is disabled, the PCS warning light will illuminate.
 P.222, 230

Warning light

Details/Actions

Indicates a malfunction in:
The VSC system;
The TRAC system;
The hill-start assist control system;
The VGRS system (if equipped); or
The DRS system (if equipped)
 Have the vehicle inspected by your Lexus dealer immediately.

431

7-2. Steps to take in an emergency

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When trouble

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ses

■

Parking brake indicator (warning buzzer)

■

Brake hold operated indicator (warning buzzer)

■

Master warning light (warning buzzer)

■

Warning buzzer

In some cases, the buzzer may not be heard

due to being in a noisy location or audio

sound.

■

Front passenger detection sensor, seat

belt reminder and warning buzzer

●

If luggage is placed on the front passen-

ger seat, the front passenger detection

sensor may cause the warning light to

flash and the warning buzzer to sound

even if a passenger is not sitting in the

seat.

●

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

sor may not detect a passenger, and the

warning light may not operate properly.

■

SRS warning light

This warning light system monitors the air-

bag sensor assembly, Pop Up Hood com-

puter 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 occu-

pant classification system (ECU and sen-

sors), 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.29)

■

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?

Warning light

Details/Actions

(flashes)

(U.S.A.)

(flashes)

(Canada)

Indicates a malfunction in the parking brake system
 Have the vehicle inspected by your Lexus dealer immediately.

Warning light

Details/Actions

(flashes)

Indicates a malfunction in the brake hold system
 Have the vehicle inspected by your Lexus dealer immediately.

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.434

432

7-2. Steps to take in an emergency

LS500h_OM_(U)_1809

If it is, tighten it securely.

The light will go off after several driving

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

trips, contact your Lexus dealer as soon as

possible.

■

Electric power steering system warning

light (warning buzzer)

When the 12-volt battery charge becomes

insufficient or the voltage temporarily

drops, the electric power steering system

warning light may come on and the warning

buzzer may sound.

■

When the tire pressure warning light

comes on

Inspect the tires to check if a tire is punc-

tured.
If a tire is punctured:

P.439

If none of the tires are punctured:

Turn the power switch off then turn it to ON

mode. Check if the tire pressure warning

light comes on or blinks.



If the tire pressure warning light blinks for

approximately 1 minute then stays on

There may be a malfunction in the tire

pressure warning system. Have the vehicle

inspected by your Lexus dealer immedi-

ately.



If the tire pressure warning light comes

After the temperature of the tires has

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.398)

■

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.395

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.

●

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.

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7-2. Steps to take in an emergency

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When trouble

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ses

WARNING

●

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.

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.

434

7-2. Steps to take in an emergency

LS500h_OM_(U)_1809

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 (main meter in
center position):

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 (main meter
moved to the right):

435

7-2. Steps to take in an emergency

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When trouble

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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

436

7-2. Steps to take in an emergency

LS500h_OM_(U)_1809

 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.424)

: 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 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.450

■

If “Warming Up Maximum Vehicle

Speed: 65 MPH” is displayed

The transmission is being warmed up and

the vehicle is unable to be driven over 65

mph (110 km/h). Wait until the transmission

warms up.

■

If “Stop the Vehicle in a Safe Place Shift

to P position” is displayed

There may be a malfunction in the hybrid

system or the shift position may be shifted to

N for a long time. Immediately stop the

vehicle and contact your Lexus dealer.

■

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

not be charged when the shift position is in

N, shift the shift position to P when the vehi-

cle is stopped.

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

437

7-2. Steps to take in an emergency

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When trouble

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ses

■

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 vehicle

has been left with the N shift position

selected for a certain amount of time.
When operating the vehicle, shift to P and

restart the hybrid system.

■

If “Shift Is in N Release Accelerator

Before Shifting” is displayed

The accelerator pedal has been depressed

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

shift position to D or R.

■

If “Depress Brake When Vehicle Is

Stopped Hybrid System May Overheat”

is displayed

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 “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)

●

The automatic headlight leveling system

●

AHB (Automatic High Beam)

■

If “Radar Cruise Control Unavailable

See Owner's Manual” is displayed

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.204, 210)

■

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 “Front Camera Unavailable” or “Front

Camera Unavailable See Owner's

Manual” is displayed

The following systems may be suspended

until the problem shown in the message is

resolved. (

P.204, 210, 430)

●

PCS (Pre-Collision system)

●

LTA (Lane Tracing Assist)

●

Dynamic radar cruise control with

full-speed range

●

RSA (Road Sign Assist) (if equipped)

●

AHB (Automatic High Beam)

■

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.375)

: 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.375)

438

7-2. Steps to take in an emergency

LS500h_OM_(U)_1809

: 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.387)

■

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.387)

■

If “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 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,

follow the instructions.

• “Engine Coolant Temp High” (

P.450)

• “Battery Low” (

P.445)

• “Transmission Fluid Temp High” (

P.177)

●

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”

• “Shift System Malfunction”

• “P Switch Malfunction”

• “Shift System Unavailable”

• “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.66)

• “Hybrid System Stopped”

• “Engine Stopped”

●

If “Maintenance Required for Traction

Battery Cooling Parts” is shown, the fil-

ters may be clogged, the air intake vents

may be blocked, or there may be a gap in

the duct. Therefore, perform the follow-

ing correction procedure.

• If the air intake vents and filters of the

hybrid battery (traction battery) are dirty,

perform the procedure on P.372 to clean

them.

• If the warning message is shown when

the air intake vents and filters of the

hybrid battery (traction battery) are not

dirty, have the vehicle inspected by your

Lexus dealer.

439

7-2. Steps to take in an emergency

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When trouble

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ses

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.428)

A run-flat tire has a

mark on the

side wall.

■

In some conditions (such as at high tem-

peratures)

You cannot continue driving for up to 160

miles (100 km).

■

For the detailed information on run-flat

tires

See the tire warranty booklet.

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 12-volt bat-

tery may be deteriorating. Have the vehi-

cle inspected by your Lexus dealer.

■

If “Have Traction Battery Inspected”

is displayed

This message indicates that the hybrid

battery (traction battery) may require

inspection or replacement. Have the

vehicle inspected by your Lexus dealer

immediately.

Do not continue driving the vehicle, as

the hybrid system may become not able

to be started again.

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

440

7-2. Steps to take in an emergency

LS500h_OM_(U)_1809

One of the following may be the cause
of the problem:
 The electronic key may not be func-

tioning properly. (

P.443)

 There may not be sufficient fuel in

the vehicle’s tank.
Refuel the vehicle.

 There may be a malfunction in the

immobilizer system. (

P.71)

 There may be a malfunction in the

shift control system.

(

P.173, 438)

 There may be a malfunction in the

steering lock system.

 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. (

P.441)

 There is a possibility that the tem-

perature of the hybrid battery (trac-
tion battery) is extremely low
(approximately below -22°F

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 damage to 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 trans-

mitter when replacing the tire. (

P.397)

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.170)

441

7-2. Steps to take in an emergency

LS500h_OM_(U)_1809

When trouble

ari

ses

[-30°C]). (

P.170)

: It may not be possible to shift the shift

position from P.

One of the following may be the cause
of the problem:
 The 12-volt battery may be dis-

charged. (

P.445)

 The 12-volt battery terminal con-

nections may be loose or corroded.
(

P.390)

One of the following may be the cause
of the problem:
 One or both of the 12-volt battery

terminals may be disconnected.
(

P.390)

 The 12-volt battery may be dis-

charged. (

P.445)

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.

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

P.183)

Parking brake indicator will come on.

Turn the power switch to ACCES-
SORY mode.

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.

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

442

7-2. Steps to take in an emergency

LS500h_OM_(U)_1809

Remove the cover inside the trunk and
pull the lever.
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 removing
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.

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.

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

443

7-2. Steps to take in an emergency

LS500h_OM_(U)_1809

When trouble

ari

ses

■

When the electronic key does not work

properly

●

Make sure that the smart access system

with push-button start has not been dis-

abled at your Lexus dealer. If it has been

disabled, re-enable it.

●

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

set, cancel the function. (

P.125)

■

Unlocking the door

Use the mechanical key (

P.110) in

order to perform the following opera-
tions:

Pull the driver’s door handle and
insert the mechanical key.

Unlock the door.

Remove the key, return the handle,
and then pull the handle again.

■

Locking the door

With the door open, push down the
inside lock button.

Close the door.

■

Trunk

Turn the mechanical key clockwise to
open. (

P.73)

If the electronic key does not
operate properly

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

P.125) 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 and trunk can be opened and
the hybrid system can be started by
following the procedure below.

NOTICE

■

In case of a smart access system with

push-button start malfunction or