Lexus IS350 (2024 year). Manual in english

342

7-2. Steps to take in an emergency

■

Warning messages

The warning messages explained below

may differ from the actual messages

according to operation conditions and vehi-

cle specifications.

■

Warning buzzer

A buzzer may sound when a message is dis-

played.

The buzzer may not be audible if the vehicle

is in a noisy location or if the audio system

volume is high.

■

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.

(P.294)
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.

WARNING

TPMS (tire pressure warning system)

malfunctions may occur for a variety of

reasons, including the installation of

replacement or alternate tires or wheels

on the vehicle that prevent the TPMS

(tire pressure warning system) from func-

tioning properly. Always check the

TPMS (tire pressure warning system)

malfunction telltale after replacing one

or more tires or wheels on your vehicle to

ensure that the replacement or alternate

tires and wheels allow the TPMS (tire

pressure warning system) to continue to

function properly.

NOTICE

■

To ensure the tire pressure warning

system operates properly

Do not install tires with different specifi-

cations or makers, as the tire pressure

warning system may not operate prop-

erly.

If a warning message is dis-
played

The multi-information display
shows warnings for system malfunc-
tions and incorrectly performed
operations, and messages that indi-
cate a need for maintenance.
When a message is displayed, per-
form the appropriate corrective
action for the message.

If a warning message is displayed
again after the appropriate actions
have been performed, contact your
Lexus dealer.

Additionally, if a warning light
comes on or flashes at the same
time that a warning message is dis-
played, take the appropriate cor-
rective action for the warning light.
(



P.333)

343

7-2. Steps to take in an emergency

When trouble

ari

ses

■

If “Engine Stopped Steering Power

Low” is displayed

This message is displayed if the engine 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 “Auto Power Off to Conserve Battery”

is displayed

Power was turned off due to the automatic

power off function. Next time when starting

the engine, increase the engine speed

slightly and maintain that level for approxi-

mately 5 minutes to recharge the 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

●

The automatic headlight leveling system

(if equipped)

●

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.163)

■

If “Radar Cruise Control Unavailable” is

displayed

The dynamic radar cruise control with

full-speed range system cannot be used

temporarily. Use the system when it

becomes available again.

■

If a message that indicates the malfunc-

tion of front camera is displayed

The following systems may be suspended

until the problem shown in the message is

resolved. (



P.163, 333)

●

PCS (Pre-Collision system)

●

LTA (Lane Tracing Assist)

●

Automatic High Beam

●

RSA (Road Sign Assist) (if equipped)

●

Dynamic radar cruise control with

full-speed range

■

If a message that indicates the malfunc-

tion of radar sensor is displayed

The following systems may be suspended

until the problem shown in the message is

resolved. (



P.163, 333)

●

PCS (Pre-Collision system)

●

LTA (Lane Tracing Assist)

●

Dynamic radar cruise control with

full-speed range

■

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.280)

: 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.280)

: 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.

344

7-2. Steps to take in an emergency

Check the engine oil and change it if neces-

sary. After changing the engine oil, make

sure to reset the message. (



P.294)

■

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.294)

■

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.362)

• “High Transmission Fluid Temp” (



P.133)

●

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”

●

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”

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 battery

may be deteriorating. Have the vehicle

inspected by your Lexus dealer.

345

7-2. Steps to take in an emergency

n t

ris



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



Set the parking brake.



Shift the shift lever to P.



Stop the engine.



Turn on the emergency flashers.
(



P.324)

If you have a flat tire

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

For details about tires:



P.300

WARNING

■

If you have a flat tire

Do not continue driving with a flat tire.

Driving even a short distance with a flat

tire can damage the tire and the wheel

beyond repair, which could result in an

accident.

Before jacking up the vehicle

346

7-2. Steps to take in an emergency

Jack handle
Screwdriver
Towing eyelet
Wheel bolt wrench
Spare tire
Wheel bolt socket
Guide pin
Jack

Location of the spare tire, jack and tools

WARNING

■

Using the tire jack

Observe the following precautions.

Improper use of the tire jack may cause

the vehicle to suddenly fall off the jack,

leading to death or serious injury.

●

Do not use the tire jack for any pur-

pose other than replacing tires or

installing and removing tire chains.

●

Only use the tire jack that comes with

this vehicle for replacing a flat tire.

Do not use it on other vehicles, and do

not use other tire jacks for replacing

tires on this vehicle.

●

Put the jack properly in its jack point.

●

Do not put any part of your body under

the vehicle while it is supported by the

jack.

●

Do not start the engine or drive the

vehicle while the vehicle is supported

by the jack.

347

7-2. Steps to take in an emergency

n t

ris

Remove the luggage mat.

Take out the jack handle from the
reverse side of the luggage mat.
Remove the spacer.

Take out the jack.

For tightening

For loosening

If the jack is too tightly installed to be
removed by hand, insert a tool, such as the
screwdriver included with the vehicle, into
the hole of the jack (portion

) and

loosen the jack.

Remove the luggage mat.

Remove the spacer and tool tray.

Loosen the center fastener that
secures the spare tire.

If the center fastener cannot be turned by

hand, use the wheel bolt wrench that is

stored in the trunk. (To secure the tire,

tighten the center fastener by hand. Do not

WARNING

●

Do not raise the vehicle while some-

one is inside.

●

When raising the vehicle, do not put an

object on or under the jack.

●

Do not raise the vehicle to a height

greater than that required to replace

the tire.

●

Use a jack stand if it is necessary to get

under the vehicle.

●

When lowering the vehicle, make sure

that there is no-one near the vehicle. If

there are people nearby, warn them

vocally before lowering.

Taking out the jack and jack han-
dle

Taking out the spare tire

348

7-2. Steps to take in an emergency

use the wrench or other tools.)

Chock the tires.

Using a wheel bolt wrench, slightly
loosen the wheel bolts (approxi-
mately one turn).

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

The jack point guides are located under

the rocker panel. They indicate the jack

point positions.

Raise the vehicle until the tire is
slightly raised off the ground.

Remove the uppermost wheel bolt
and install the guide pin by
hand.

WARNING

■

When storing the spare tire

Be careful not to catch fingers or other

body parts between the spare tire and

the body of the vehicle.

Replacing a flat tire

Flat tire

Wheel chock posi-

tions

Front left-hand side

Behind the rear
right-hand side tire

Front right-hand
side

Behind the rear
left-hand side tire

Rear left-hand side

In front of the front
right-hand side tire

Rear right-hand side

In front of the front
left-hand side tire

349

7-2. Steps to take in an emergency

n t

ris

Turn the guide pin clockwise to tighten it

until it stops.

Remove all the wheel bolts and the
tire.

When resting the tire on the ground, place

the tire so that the wheel design faces up to

avoid scratching the wheel surface.

Remove any dirt or foreign matter
from the wheel contact surfaces
and wheel bolts.

If foreign matter is on the wheel contact

surface, the wheel bolts may loosen while

the vehicle is in motion, causing the tire to

come off.

Align a wheel bolt hole on the spare
tire with the guide pin, and set the
spare tire on the guide pin.

Securely set the spare tire so that its wheel

is touching the contact surface.

Loosely tighten each wheel bolt by
hand or using a wheel bolt socket

Push the spare tire to prevent it from falling.
Do not use the wheel bolt socket for any-

thing other than loosely tightening the

wheel bolts by hand.

WARNING

■

Replacing a flat tire

Do not touch the disc wheels or the area

around the brakes immediately after the

vehicle has been driven. After the vehicle

has been driven the disc wheels and the

area around the brakes will be extremely

hot. Touching these areas with hands,

feet or other body parts while changing a

tire, etc. may result in burns.

Installing the spare tire

350

7-2. Steps to take in an emergency

Remove the guide pin and loosely
tighten the wheel bolt as in step

Lower the vehicle.

Securely tighten the wheel bolts
twoor three times in the order
shown inthe illustration using a
wheel bolt wrench.

Tightening torque:

103 ft•lbf (140 N•m, 14.3 kgf•m)

Stow the flat tire, tire jack and all
tools.

■

The compact spare tire

●

The compact spare tire is identified by the

label “TEMPORARY USE ONLY” on

the tire sidewall.

●

Use the compact spare tire temporarily,

and only in an emergency.

●

Make sure to check the tire inflation pres-

sure of the compact spare tire. (



P.376)

■

When using the compact spare tire

As the compact spare tire is not equipped

with a tire pressure warning valve and trans-

mitter, low inflation pressure of the spare

tire will not be indicated by the tire pressure

warning system. Also, if you replace the

compact spare tire after the tire pressure

warning light comes on, the light remains

on.

■

When the compact spare tire is

equipped

The vehicle becomes lower when driving

with the compact spare tire compared to

when driving with standard tires.

■

If you have a flat rear tire on a road cov-

ered with snow or ice (vehicles with

front and rear tires of the same size)

Install the compact spare tire on one of the

front wheels of the vehicle. Perform the fol-

lowing steps and fit tire chains to the rear

tires:

Replace a front tire with the compact

spare tire.

Replace the flat rear tire with the tire

removed from the front of the vehicle.

Fit tire chains to the rear tires.

WARNING

■

Installing the compact spare tire

Failure to follow these precautions could

cause the wheel bolts to loosen and the

tire to fall off, resulting in death or serious

injury.

351

7-2. Steps to take in an emergency

n t

ris

WARNING

●

The contact surfaces of the wheel bolt

and wheel are designed specifically to

fit together. When using wheels that

were installed when the vehicle was

shipped from the factory, use special-

ized Lexus genuine wheel bolts. Do

not use wheel bolts designed for other

models, model years or types even if

they are Lexus genuine parts. If the

vehicle does not have wheels that were

installed to the vehicle when it was

shipped from the factory, the fac-

tory-installed wheel bolts may not be

appropriate for the wheel. Contact

either the retailer where the wheels

were purchased orthe manufacturer of

the wheels for proper installation

advice.

●

Never apply oil or grease to the wheel

bolts or their contact surface on the

wheel .

Doing so may cause the wheel bolts to

be tightened excessively, leading to

damage to the wheel bolts, the

threaded portion the wheel bolts install

, or the wheel.

Remove any oil or grease thathas

adhered when installingthe wheel

bolts.



Steel wheel



Aluminum wheel

●

After replacing a tire, check the tight-

ening torque as soon as possible.

If you cannot confirm the tightening

torque yourself, have the vehicle

inspected at your Lexus dealer.

●

Do not attach a heavily damaged

wheel ornament, as it may fly off the

wheel while the vehicle is moving.

●

If a wheel bolt hole in a wheel or the

threads of a wheel bolt or the wheel

hub are deformed, cracked, rusty or

otherwise damaged, have the vehicle

inspected by your Lexus dealer.

■

When tightening the wheel bolts

Do not tighten the wheel bolts exces-

sively. Doing so may cause the wheel

bolts, the threads of the wheel hub, or the

wheel to be damaged.

■

Guide pin

When removing or installing a tire, make

sure to use the guide pin.

Also, the guide pin is made of resin. It

may be damaged if the wheel is placed

anywhere other than

or if a large

amount of force is applied to the guide

pin.

WARNING

■

When using the compact spare tire

●

Remember that the compact spare tire

provided is specifically designed for

use with your vehicle. Do not use your

compact spare tire on another vehicle.

●

Do not use more than one compact

spare tires simultaneously.

352

7-2. Steps to take in an emergency

●

Replace the compact spare tire with a

standard tire as soon as possible.

●

Avoid sudden acceleration, abrupt

steering, sudden braking and shifting

operations that cause sudden engine

braking.

■

When the compact spare tire is

attached

The vehicle speed may not be correctly

detected, and the following systems may

not operate correctly:

• ABS & Brake assist

• VSC

• TRAC

• Dynamic radar cruise control with

full-speed range

• PCS

• EPS

• Tire pressure warning system

• Adaptive Variable Suspension System

(if equipped)

• LTA (Lane Tracing Assist)

• Lexus parking assist monitor

• Panoramic view monitor (if equipped)

• Intuitive parking assist (if equipped)

• PKSB (Parking Support Brake) (if

equipped)

• BSM (Blind Spot Monitor)

• Navigation system (if equipped)

Also, not only can the following system

not be utilized fully, but it may even nega-

tively affect the drive-train components:

• AWD system

■

Speed limit when using the compact

spare tire

Do not drive at speeds in excess of 50

mph (80 km/h) when a compact spare

tire is installed on the vehicle.

The compact spare tire is not designed

for driving at high speeds. Failure to

observe this precaution may lead to an

accident causing death or serious injury.

■

After using the tools and jack

Before driving, make sure all the tools

and jack are securely in place in their

storage location to reduce the possibility

of personal injury during a collision or

sudden braking.

NOTICE

■

Be careful when driving over bumps

with the compact spare tire installed

on the vehicle

When driving with the compact spare

tire installed, the vehicle height will be

different than when driving with standard

tires. Be careful when driving over

uneven road surfaces, etc.

■

Driving with tire chains and the com-

pact spare tire

Do not fit tire chains to the compact

spare tire.

Tire chains may damage the vehicle body

and adversely affect driving perfor-

mance.

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.

353

7-2. Steps to take in an emergency

When trouble

ari

ses

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.130)



There may be a malfunction in the
engine immobilizer system.
(



P.60)

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



The battery may be discharged.
(



P.358)



The battery terminal connections
may be loose or corroded.
(



P.297)

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.354)

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



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



P.297)



The battery may be discharged.
(



P.358)

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:

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



P.139)

Parking brake indicator will come on.

Shift the shift lever to P.

If the engine will not start

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



P.130), 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.

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

355

7-2. Steps to take in an emergency

n t

ris

Remove the cover inside the trunk and
pull the lever.

■

When the electronic key does not work

properly

●

Make sure that the smart access system

with push-button start has not been deac-

tivated in the customization setting. If it is

off, turn the function on.

●

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

set, cancel the function. (



P.98)

■

Doors

Use the mechanical key (



P.88) in

order to perform the following opera-
tions:

If the fuel filler door cannot
be opened

If the fuel filler door cannot be
opened by pressing the center of
the rear edge of the fuel filler door
with the doors unlocked, the follow-
ing procedure can be used to open
the fuel filler door.

Opening the fuel filler door

If the electronic key does not
operate properly

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



P.98) 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

356

7-2. Steps to take in an emergency

Locks all the doors

Unlocks the door

Turning the key rearward unlocks the
driver’s door. Turning the key once again
within 5 seconds unlocks the other doors.

■

Trunk

Turn the mechanical key clockwise to
open. (



P.61)

■

Key linked functions

Closes the windows and moon roof

(turn and hold)

Opens the windows and moon roof

(turn and hold)

This setting must be customized at your

Lexus dealer.

: If equipped

Ensure that the shift lever is in P and
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.

WARNING

■

When using the mechanical key and

operating the power windows or

moon roof

Operate the power window or 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 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 moon roof.

Starting the engine

357

7-2. Steps to take in an emergency

When trouble

ari

ses

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

■

Stopping the engine

Shift the shift lever to P and press the engine

switch as you normally do when stopping

the engine.

■

Replacing the 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.312)

■

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.132)

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.

358

7-2. Steps to take in an emergency

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.

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.62)

Open the hood. (



P.287)

IS500: Remove the engine cover.

Raise the rear of the engine cover to

remove the rear clip, and then raise the

front of the engine cover to remove the

front clips.

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  .
Use jumper cables that can reach the specifiedterminals and connecting point.



IS350 AWD/IS350/IS300 AWD

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

Restarting the engine

A
B
C

360

7-2. Steps to take in an emergency

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.

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

low speed for an extended period, such

as in heavy traffic.

■

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 discharged, be

especially careful when reconnecting the

battery.

WARNING

■

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:

361

7-2. Steps to take in an emergency

n t

ris

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.

●

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.

NOTICE

■

When handling jumper cables

When connecting the jumper cables,

ensure that they do not become entan-

gled in the cooling fans or engine drive

belt.

■

When connecting jumper cables

Make sure to connect jumper cables to

thespecified terminals and connecting

point.Failure to do so may adversely

affect theelectronic devices or damage

to them.

If your vehicle overheats

The following may indicate that
your vehicle is overheating.



The needle of the engine coolant
temperature gauge (



P.69)

enters 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

363

7-2. Steps to take in an emergency

When trouble

ari

ses

“FULL” line
“LOW” line



Intercooler (IS300)

Reservoir cap
“F” line
“L” line

Add coolant if necessary.

Water can be used in an emergency if

coolant is unavailable.



Engine (IS350
AWD/IS350/IS300 AWD)



Engine (IS300)



Engine (IS500)



Intercooler (IS300)

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

The fans operate when the air conditioning

system is turned on immediately after a

cold start. Confirm that the fans are oper-

ating by checking the fan sound and air

flow. If it is difficult to check these, turn the

air conditioning system on and off repeat-

edly. (The fans may not operate in freezing

temperatures.)

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

Check if “Engine Coolant Temp
High Stop in a Safe Place See
Owner’s Manual” is shown on the

B
C

A
B
C

364

7-2. Steps to take in an emergency

multi-information display.
If the message does not disappear:
Stop the engine and contact your
Lexus dealer.
If the message is not displayed:
Have the vehicle inspected at the
nearest Lexus dealer.

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

fans and belts.

Failure to do so may cause the hands

or clothing to be caught, resulting in

serious injury.

●

IS350 AWD/IS350/IS300 AWD:

Do not loosen the coolant inlet cap or

coolant reservoir cap while the engine

and radiator are hot. (The coolant inlet

cap is located under the engine cover.)

High temperature steam or coolant

could spray out.

WARNING

●

IS300: Do not loosen the coolant inlet

cap, coolant reservoir cap, or inter-

cooler reservoir cap while the engine

and radiator are hot. High tempera-

ture steam or coolant could spray out.

●

IS500: Do not loosen the coolant inlet

cap or coolant reservoir cap while the

engine and radiator are hot. High tem-

perature 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:

365

7-2. Steps to take in an emergency

When trouble

ari

ses

Stop the engine. Set the parking
brake and shift the shift lever 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 lever 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.

●

Avoid contaminating the coolant with

foreign matter (such as sand or dust

etc.).

●

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

366

7-2. Steps to take in an emergency

WARNING

■

When attempting to free a stuck vehi-

cle

If you choose to push the vehicle back

and forth to free it, make sure the sur-

rounding area is clear to avoid striking

other vehicles, objects or people. The

vehicle may also lunge forward or lunge

back suddenly as it becomes free. Use

extreme caution.

■

When shifting the shift lever

Be careful not to shift the shift lever with

the accelerator pedal depressed.

This may lead to unexpected rapid accel-

eration of the vehicle that may cause an

accident resulting in death or serious

injury.

NOTICE

■

To avoid damaging the transmission

and other components

●

Avoid spinning the rear wheels and

depressing the accelerator pedal

more than necessary.

●

If the vehicle remains stuck even after

these procedures are performed, the

vehicle may require towing to be freed.

368

8-1. Specifications

8-1.Specifications

: IS350 AWD/IS350/IS300 AWD/IS300

: IS500

: Unladen vehicles

: 2WD models

: AWD models

: Vehicles with 235/45R18 or 235/40R19 rear tires

: Vehicles with 265/35R19 rear tires

■

Vehicle identification number

The vehicle identification number
(VIN) is the legal identifier for your
vehicle. This is the primary identifica-
tion number for your Lexus. It is used in

registering the ownership of your vehi-
cle.
This number is stamped on the top left
of the instrument panel and in the
engine compartment.

Maintenance data (fuel, oil level, etc.)

Dimensions and weight

Overall length

185.4 in. (4710 mm)

187.3 in. (4758 mm)

Overall width

72.4 in. (1840 mm)

Overall height

56.5 in. (1435 mm)

56.7 in. (1440 mm)

Wheelbase

110.2 in. (2800 mm)

Tread

Front

62.2 in. (1580 mm)

Rear

63.0 in. (1600 mm)

61.8 in. (1570 mm)

Vehicle capacity weight
(Occupants + luggage)

825 lb. (375 kg)

Seating capacity

5 (Front 2, Rear 3)

Vehicle identification

370

8-1. Specifications



IS500



IS350 AWD/IS350/IS300 AWD



IS300



IS500

Engine

Model

3.5 L 6-cylinder (2GR-FKS) engine

Type

6-cylinder V type, 4-cycle, gasoline

Bore and stroke

3.70



3.27 in. (94.0



83.0 mm)

Displacement

210.9 cu. in. (3456 cm

)

Valve clearance

Automatic adjustment

Drive belt tension

Automatic adjustment

Model

2.0 L 4-cylinder (8AR-FTS) engine

Type

4-cylinder in line, 4-cycle, gasoline (with tur-
bocharger)

Bore and stroke

3.39



3.39 in. (86.0



86.0 mm)

Displacement

121.9 cu. in. (1998 cm

)

Valve clearance

Automatic adjustment

Drive belt tension

Automatic adjustment

Model

5.0 L 8-cylinder (2UR-GSE) engine

Type

8-cylinder V type, 4-cycle, gasoline

Bore and stroke

3.70



3.52 in. (94.0



89.5 mm)

371

8-1. Specifications

Vehi

cle

spec

ifi

tions

■

Oil capacity (Drain and refill [Ref-
erence

])

: The engine oil capacity is a reference

quantity to be used when changing the
engine oil.aboutWhen actually adding
the engine oil, make sure that the oil level
is between the low level mark and refill

upper limit mark (P.294). Warm up and
turn off the engine, wait more than 5
minutes, and check the oil level on the
dipstick.

■

Engine oil selection (IS350
AWD/IS350/IS300
AWD/IS300)

“Toyota Genuine Motor Oil” is used in
your Lexus vehicle. Use Lexus
approved “Toyota Genuine Motor Oil”
or equivalent to satisfy the following
grade and viscosity.
Oil grade: ILSAC GF-6A multigrade
engine oil
Recommended viscosity: SAE 0W-20
SAE 0W-20 is the best choice for
good fuel economy and good starting
in cold weather.
If SAE 0W-20 is not available, SAE
5W-20 oil may be used. However, it
must be replaced with SAE 0W-20 at
the next oil change.

Displacement

303.2 cu. in. (4969 cm

)

Drive belt tension

Automatic adjustment

Fuel

Fuel type

Unleaded gasoline only

Octane Rating

91 (Research Octane Number 96) or higher

Fuel tank capacity
(Reference)

17.5 gal. (66.5 L, 14.6 Imp. gal.)

Lubrication system

With filter



IS350 (2WD)

6.0 qt. (5.7 L, 5.0 Imp. qt.)



IS350 AWD/IS300
AWD (AWD)

6.8 qt. (6.4 L, 5.6 Imp. qt.)



IS300

4.9 qt. (4.6 L, 4.0 Imp. qt.)



IS500

9.1 qt. (8.6 L, 7.6 Imp. qt.)

Without fil-

ter



IS350 (2WD)

5.8 qt. (5.5 L, 4.8 Imp. qt.)



IS350 AWD/IS300
AWD (AWD)

6.3 qt. (6.0 L, 5.3 Imp. qt.)



IS300

4.5 qt. (4.3 L, 3.8 Imp. qt.)



IS500

8.3 qt. (7.9 L, 7.0 Imp. qt.)

372

8-1. Specifications

Outside temperature

Oil viscosity (0W-20 is explained here
as an example):
• The 0W in 0W-20 indicates the

characteristic of the oil which allows
cold startability. Oils with a lower
value before the W allow for easier
starting of the engine in cold
weather.

• The 20 in 0W-20 indicates the vis-

cosity characteristic of the oil when
the oil is at high temperature. An oil
with a higher viscosity (one with a
higher value) may be better suited if
the vehicle is operated at high
speeds, or under extreme load con-
ditions.

How to read oil container label:
The International Lubricant Specifica-
tion Advisory Committee (ILSAC)
Certification Mark is added to some oil
containers to help you select the oil you
should use.

■

Engine oil selection (IS500)

“Toyota Genuine Motor Oil” is used in
your Lexus vehicle. Use Lexus
approved “Toyota Genuine Motor Oil”
or equivalent to satisfy the following
grade and viscosity.
Oil grade: ILSAC GF-6A multigrade
engine oil
Recommended viscosity: SAE 5W-30
SAE 5W-30 is the best choice for
good fuel economy and good starting
in cold weather.
If SAE 5W-30 is not available, SAE
10W-30 oil may be used. However, it
should be replaced with SAE 5W- 30
at the next oil change.

Outside temperature

Oil viscosity (5W-30 is explained here
as an example):
• The 5W in 5W-30 indicates the

characteristic of the oil which allows

373

8-1. Specifications

Vehi

cle

spec

ifi

tions

cold startability. Oils with a lower
value before the W allow for easier
starting of the engine in cold
weather.

• The 30 in 5W-30 indicates the vis-

How to read oil container label:

The International Lubricant Specifica-
tion Advisory Committee (ILSAC)
Certification Mark is added to some oil
containers to help you select the oil you
should use.

: The fluid capacity is a reference quantity.

If replacement is necessary, contact your Lexus dealer.

Cooling system

Capacity*

IS350
AWD/IS350
/IS300 AWD

9.8 qt. (9.3 L, 8.2 Imp. qt.)

IS300



Engine

9.1 qt. (8.6 L, 7.6 Imp. qt.)



Intercooler

3.0 qt. (2.8 L, 2.5 Imp. qt.)

IS500

12.0 qt. (11.4 L, 10.0 Imp. qt.)

Coolant type

Use either of the following:



“Toyota Super Long Life Coolant”



Similar high-quality ethylene glycol-based non-silicate,
non-amine, non-nitrite, and non-borate coolant with
long-life hybrid organic acid technology

Do not use plain water alone.

Lexus IS350 (2024 year). Manual in english - page 11