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

428

7-2. Steps to take in an emergency

LS500_OM_(U)_1809

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.196, 202, 421)

●

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.364)

: 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.364)

: 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.377)

■

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.377)

■

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.440)

• “Battery Low” (

P.435)

• “Transmission Fluid Temp High” (

P.168)

●

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

429

7-2. Steps to take in an emergency

LS500_OM_(U)_1809

When trouble

ari

ses

immediately.

• “Access System with Elec. Key Malfunc-

tion”

• “Shift System Malfunction”

• “P Switch Malfunction”

• “Shift System Unavailable”

●

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”

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.419)

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 battery

may be deteriorating. Have the vehicle

inspected by your Lexus dealer.

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

430

7-2. Steps to take in an emergency

LS500_OM_(U)_1809

One of the following may be the cause
of the problem:
 There may not be sufficient fuel in

the vehicle’s tank.
Refuel the vehicle.

 The engine may be flooded.

Try to restart the engine again fol-
lowing correct starting procedures.
(

P.164)

 There may be a malfunction in the

engine immobilizer system.
(

P.63)

 There may be a malfunction in the

shift control system.

(

P.167, 428)

: It may not be possible to shift the shift

position from P.

One of the following may be the cause
of the problem:
 The battery may be discharged.

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.387)

If the engine will not start

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

P.164), con-

sider each of the following points:

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

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

431

7-2. Steps to take in an emergency

LS500_OM_(U)_1809

When trouble

ari

ses

(

P.435)

 The battery terminal connections

may be loose or corroded.
(

P.380)

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

P.431)

One of the following may be the cause
of the problem:
 One or both of the battery terminals

may be disconnected. (

P.380)

 The battery may be discharged.

(

P.435)

 There may be a malfunction in the

steering lock system.

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

When the engine does not start, the
following steps can be used as an
interim measure to start the engine if
the engine switch is functioning nor-

mally.
Do not use this starting procedure
except in cases of emergency.

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

P.174)

Parking brake indicator will come on.

Turn the engine switch to ACCES-
SORY mode.

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

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

The starter motor does not turn
over

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

Starting the engine in an emer-
gency

432

7-2. Steps to take in an emergency

LS500_OM_(U)_1809

Remove the cover inside the trunk and
pull the lever.

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

433

7-2. Steps to take in an emergency

LS500_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.113)

■

Unlocking the door

Use the mechanical key (

P.98) 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.65)

If the electronic key does not
operate properly

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

P.113) 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 engine can be started by follow-
ing the procedure below.

NOTICE

■

In case of a smart access system with

push-button start malfunction or

other key-related problems

Take your vehicle with all the electronic

keys provided with your vehicle to your

Lexus dealer.

Locking and unlocking the
doors, unlocking the trunk

434

7-2. Steps to take in an emergency

LS500_OM_(U)_1809

■

Key linked functions

Closes the windows and the moon
roof

or panoramic moon roof

(turn and hold)

Opens the windows and the moon
roof

or panoramic moon roof

(turn and hold)

These settings must be customized at your

Lexus dealer.

: If equipped

Depress the brake pedal.

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

When the electronic key is detected, a

buzzer sounds and the engine switch will

turn to IGNITION ON mode.
When the smart access system with

push-button start is deactivated in custom-

ization setting, the engine switch will turn

to ACCESSORY mode.

Firmly depress the brake pedal and
check that

is shown on the

multi-information display.

Press the engine switch.

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

■

Stopping the engine

Set the parking brake, shift the shift position

to P and press the engine switch as you nor-

mally do when stopping the engine.

■

Electronic key battery

As the above procedure is a temporary

measure, it is recommended that the elec-

tronic key battery be replaced immediately

when the battery is depleted. (

P.399)

■

Changing engine switch modes

Release the brake pedal and press the

engine switch in step

above. The engine

does not start and modes will be changed

each time the switch is pressed. (

P.166)

WARNING

■

When using the mechanical key and

operating the power windows or the

moon roof or panoramic moon roof

Operate the power window or the moon

roof or panoramic moon roof after

checking to make sure that there is no

possibility of any passenger having any of

their body parts caught in the window or

the moon roof or panoramic moon roof.

Also, do not allow children to operate the

mechanical key. It is possible for children

and other passengers to get caught in

the power window or the moon roof or

panoramic moon roof.

Starting the engine

435

7-2. Steps to take in an emergency

LS500_OM_(U)_1809

When trouble

ari

ses

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



Method connecting jumper (or
booster) cables to the battery

Confirm that the electronic key is
being carried.

When connecting the jumper (or booster)

cables, depending on the situation, the

alarm may activate and doors locked.

(

P.66)

Open the trunk lid and remove the
luggage mat. (

P.340)

In the event that the trunk opener cannot

be used, use the mechanical key to open

the trunk. (

P.433)

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

Positive (+) battery terminal (your vehicle)
Positive (+) battery terminal (second vehicle)
Negative (-) battery terminal (second vehicle)
Negative (-) battery terminal (your vehicle)

If the vehicle battery is dis-
charged

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

Restarting the engine

A
B
C
D

436

7-2. Steps to take in an emergency

LS500_OM_(U)_1809

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

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

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

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



Method connecting jumper (or
booster) cables to the exclusive
jump starting terminal

Confirm that the electronic key is
being carried.

When connecting the jumper (or booster)

cables, depending on the situation, the

alarm may activate and doors locked.

(

P.66)

Open the hood. Remove the pas-
senger side engine compartment
cover. (

P.371, 374)

Remove the service
cover.(

P.375)

Open the fuse box cover.

Push the tab in and lift the lid off.

Open the exclusive jump starting
terminal cover.

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

437

7-2. Steps to take in an emergency

LS500_OM_(U)_1809

When trouble

ari

ses

connect a negative cable clamp to on the second vehicle and connect the
clamp at the other end of the negative cable to .

Exclusive jump starting terminal (your vehicle)
Positive (+) battery terminal (second vehicle)
Negative (-) battery terminal (second vehicle)
Solid, stationary, unpainted metallic point away from the exclusive jump starting
terminal and any moving parts as shown in the illustration

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

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

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

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

Close the exclusive jump starting
terminal cover, and reinstall the fuse
box cover to its original position.

Install the service cover.(

P.375)

Install the engine compartment
cover.

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

■

Starting the engine when the battery is

discharged

The engine cannot be started by push-start-

ing.

■

To prevent battery discharge

●

Turn off the headlights and the audio sys-

tem while the engine is off.

●

Turn off any unnecessary electrical com-

ponents when the vehicle is running at a

A
B
C
D

438

7-2. Steps to take in an emergency

LS500_OM_(U)_1809

low speed for an extended period, such

as in heavy traffic.

■

When the battery is removed or dis-

charged

●

Information stored in the ECU is cleared.

When the battery is depleted, have the

vehicle inspected at your Lexus dealer.

●

Some systems may require initialization.

(

P.481)

■

When removing the battery terminals

When the battery terminals are removed,

the information stored in the ECU is

cleared. Before removing the battery termi-

nals, contact your Lexus dealer.

■

Charging the battery

The electricity stored in the battery will dis-

charge gradually even when the vehicle is

not in use, due to natural discharge and the

draining effects of certain electrical appli-

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

the battery may discharge, and the engine

may be unable to start. (The battery

recharges automatically during driving.)

■

When recharging or replacing the bat-

tery

●

In some cases, it may not be possible to

unlock the doors using the smart access

system with push-button start when the

battery is discharged. Use the wireless

remote control or the mechanical key to

lock or unlock the doors.

●

The engine may not start on the first

attempt after the battery has recharged

but will start normally after the second

attempt. This is not a malfunction.

●

The engine switch mode is memorized by

the vehicle. When the battery is recon-

nected, the system will return to the

mode it was in before the battery was dis-

charged. Before disconnecting the bat-

tery, turn the engine switch off.

If you are unsure what mode the engine

switch was in before the battery dis-

charged, be especially careful when

reconnecting the battery.

■

When replacing the battery

●

Use a Central Degassing type battery

(European Regulations).

●

Use a battery with the same case size as

the previous battery and an equivalent

20 hour rate capacity (20HR) or greater.

• If the sizes differ, the battery cannot be

properly secured.

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

the time period where the vehicle is not

used is a short time, the battery may dis-

charge and the engine may not be able to

start.

●

Use a battery with a handle. If a battery

without a handle is used, removal is more

difficult.

●

After replacing, firmly attach the follow-

ing items to the exhaust hole of the bat-

tery.

• Use the exhaust hose that was attached

to the battery before replacing and con-

firm that it is firmly connected to the hole

section of the vehicle.

• Use the exhaust hole plug included with

the battery replaced or the one installed

on the battery prior to the replacement.

(Depending on the battery to be

replaced, the exhaust hole may be

plugged.)

Exhaust hole plug

Exhaust hole

Exhaust hose

For details, consult your Lexus dealer.

A
B
C

439

7-2. Steps to take in an emergency

LS500_OM_(U)_1809

When trouble

ari

ses

WARNING

■

When removing the battery terminals

Always remove the negative (-) terminal

first. If the positive (+) terminal contacts

any metal in the surrounding area when

the positive (+) terminal is removed, a

spark may occur, leading to a fire in addi-

tion to electrical shocks and death or

serious injury.

■

Avoiding battery fires or explosions

Observe the following precautions to

prevent accidentally igniting the flamma-

ble gas that may be emitted from the bat-

tery:

●

Make sure each jumper cable is con-

nected to the correct terminal and that

it is not unintentionally in contact with

any other than the intended terminal.

●

Do not allow the other end of the

jumper cable connected to the “+” ter-

minal to come into contact with any

other parts or metal surfaces in the

area, such as brackets or unpainted

metal.

●

Do not allow the + and - clamps of the

jumper cables to come into contact

with each other.

●

Do not smoke, use matches, cigarette

lighters or allow open flame near the

battery.

■

Battery precautions

The battery contains poisonous and cor-

rosive acidic electrolyte, while related

parts contain lead and lead compounds.

Observe the following precautions when

handling the battery:

●

When working with the battery, always

wear safety glasses and take care not

to allow any battery fluids (acid) to

come into contact with skin, clothing

or the vehicle body.

●

Do not lean over the battery.

●

In the event that battery fluid comes

into contact with the skin or eyes,

immediately wash the affected area

with water and seek medical attention.

Place a wet sponge or cloth over the

affected area until medical attention

can be received.

●

Always wash your hands after handling

the battery support, terminals, and

other battery-related parts.

●

Do not allow children near the battery.

■

After recharging the battery

Have the battery inspected at your Lexus

dealer as soon as possible.

If the battery is deteriorating, continued

use may cause the battery to emit a mal-

odorous gas, which may be detrimental

to the health of passengers.

■

When replacing the battery

●

When the vent plug and indicator are

close to the hold down clamp, the bat-

tery fluid (sulfuric acid) may leak.

●

For information regarding battery

replacement, contact your Lexus

dealer.

●

After replacing, securely attach the

exhaust hose and exhaust hole plug to

the exhaust hole of the replaced bat-

tery. If not properly installed, gases

(hydrogen) may leak into the vehicle

interior, and there is the possible dan-

ger of the gas igniting and exploding.

NOTICE

■

When handling jumper cables

When connecting the jumper cables,

ensure that they do not become entan-

gled in the cooling fan or engine drive

belt.

■

To prevent damaging the vehicle

The exclusive jump starting terminal is to

be used when charging the battery from

another vehicle in an emergency. It can-

not be used to jump start another vehicle.

440

7-2. Steps to take in an emergency

LS500_OM_(U)_1809

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

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

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

radiator core (radiator) for any
leaks.

Radiators
Cooling fan

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

The coolant level is satisfactory if it
is between the “F” and “L” lines on
the reservoir.

 Engine

Reservoir
“F” line
“L” line
Coolant inlet cap

 Intercooler

If your vehicle overheats

The following may indicate that
your vehicle is overheating.

 The engine coolant temperature

gauge (

P.73, 76) is in the red

zone or a loss of engine power is
experienced. (For example, the
vehicle speed does not increase.)

 “Engine Coolant Temp High Stop

in a Safe Place See Owner’s
Manual” is shown on the
multi-information display.

 Steam comes out from under the

hood.

Correction procedures

A
B

A
B
C
D

441

7-2. Steps to take in an emergency

LS500_OM_(U)_1809

When trouble

ari

ses

Reservoir
“F” line
“L” line

Add coolant if necessary.

Water can be used in an emergency if

coolant is unavailable.

 Engine



P.441

 Intercooler

Remove the engine compartment cover
and add coolant.

Start the engine and turn the air
conditioning system on to check
that the radiator cooling fan oper-
ates and to check for coolant leaks
from the radiator or hoses.

The fan operates when the air conditioning

system is turned on immediately after a

cold start. Confirm that the fan is operating

by checking the fan sound and air flow. If it

is difficult to check these, turn the air con-

ditioning system on and off repeatedly.

(The fan may not operate in freezing tem-

peratures.)

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

■

When adding engine coolant

Add coolant in accordance with the follow-

ing procedure.

A
B
C

442

7-2. Steps to take in an emergency

LS500_OM_(U)_1809

Remove the engine compartment

cover.

Remove the engine cover.

Lift the front of the engine cover straight up

and then pull it forward.

Remove the caps

and

Add coolant through the inlet of the cap

up to the “F” line

, and then

replace the cap

Add coolant through the inlet of the cap

until it is full, and then replace the

cap .

Install the engine compartment cover

and engine cover.

Engage the claws of the engine cover to

install it.

WARNING

■

When inspecting under the hood of

your vehicle

Observe the following precautions.

Failure to do so may result in serious

injury such as burns.

●

If steam is seen coming from under the

hood, do not open the hood until the

steam has subsided. The engine com-

partment may be very hot.

●

Keep hands and clothing (especially a

tie, a scarf or a muffler) away from the

fan and belts.

Failure to do so may cause the hands

or clothing to be caught, resulting in

serious injury.

●

Do not loosen the coolant inlet cap,

the engine coolant reservoir cap or the

intercooler coolant reservoir cap while

the engine and radiator are hot.

High temperature steam or coolant

could spray out.

NOTICE

■

When adding engine coolant

Add coolant slowly after the engine has

cooled down sufficiently. Adding cool

coolant to a hot engine too quickly can

cause damage to the engine.

■

To prevent damage to the cooling sys-

tem

Observe the following precautions:

●

Avoid contaminating the coolant with

foreign matter (such as sand or dust

etc.).

443

7-2. Steps to take in an emergency

LS500_OM_(U)_1809

When trouble

ari

ses

Stop the engine. Set the parking
brake and shift the shift position to
P.

Remove the mud, snow or sand
from around the rear wheels.

Place wood, stones or some other
material under the rear wheels to
help provide traction.

Restart the engine.

Shift the shift position to D or R and
release the parking brake. Then,
while exercising caution, depress
the accelerator pedal.

■

When it is difficult to free the vehicle

Press the

switch to turn off TRAC.

NOTICE

●

Do not use any coolant additive.

If the vehicle becomes stuck

Carry out the following proce-
dures if the tires spin or the vehicle
becomes stuck in mud, dirt or snow:

Recovering procedure

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