Lexus RC350 (2023 year). Manual in english

309

7-2. Steps to take in an emergency

When trouble

ari

ses

■

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

: 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 engine switch is turned to IGNITION ON mode, the buzzer sounds.
If the seat belt is still unfastened, the buzzer sounds intermittently for a certain period of
time after the vehicle reaches a certain speed.

Front passenger’s seat belt warning buzzer:
The front passenger’s seat belt warning buzzer sounds to alert the front passenger that his

or her seat belt is not fastened. If the seat belt is unfastened, the buzzer sounds intermit-
tently for a certain period of time after the vehicle reaches a certain speed.

■

Rear passengers’ seat belt reminder lights

(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 passenger that his or

her seat belt is not fastened. If the seat belt is unfastened, the buzzer sounds intermit-
tently for a certain period of time, after the seat belt is fastened and unfastened and the
vehicle reaches a certain speed.

■

Master warning light (warning buzzer)

Warning light

Details/Actions

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



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

Warning light

Details/Actions

Warns the rear passengers to fasten their seat belts



Fasten the seat belt.

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.313

310

7-2. Steps to take in an emergency

■

Tire pressure warning light

■

Parking brake indicator (warning buzzer)

■

Brake hold operated indicator (warning buzzer)

■

SRS warning light

This warning light system monitors the air-

bag sensor assembly, front impact sensors,

side impact sensors (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, “AIR BAG ON”

indicator light, “AIR BAG OFF” indicator

light, front passenger’s seat belt buckle

switch, seat belt pretensioners, airbags,

interconnecting wiring and power sources.

(



P.29)

■

Front passenger detection sensor, seat

belt reminder and warning buzzer

●

If luggage is placed on the front passen-

Warning light

Details/Actions

When the light comes on:
Low tire inflation pressure such as



Natural causes (



P.311)



Flat tire (



P.311, 317)



Adjust the tire inflation pressure to the specified level. The light will
turn off after a few minutes. In case the light does not turn off even if
the tire inflation pressure is adjusted, have the system checked by
your Lexus dealer.

When the light comes on after blinking for 1 minute:
Malfunction in the tire pressure warning system



Have the system checked by your Lexus dealer.

Warning light

Details/Actions

(flashes)

(U.S.A.)

(flashes)

(Canada)

It is possible that the parking brake is not fully engaged or released



Operate the parking brake switch once again.

This light comes on when the parking brake is not released. If the light
turns off after the parking brake is fully released, the system is operating
normally.

Warning light

Details/Actions

(flashes)

Indicates a malfunction in the brake hold system



Have the vehicle inspected by your Lexus dealer immediately.

311

7-2. Steps to take in an emergency

n t

ris

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.

■

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?

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 battery charge becomes insuffi-

cient 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

Check the tire inflation pressure and adjust

to the appropriate level. Pushing the tire

pressure warning reset switch will not turn

off the tire pressure warning light.

■

The tire pressure warning light may

come on due to natural causes

The tire pressure warning light may come

on due to natural causes such as natural air

leaks and tire inflation pressure changes

caused by temperature. In this case, adjust-

ing the tire inflation pressure will turn off the

warning light (after a few minutes).

■

When a tire is replaced with the spare

tire

The spare tire is not equipped with a tire

pressure warning valve and transmitter. If a

tire goes flat, the tire pressure warning light

will not turn off even though the flat tire has

been replaced with the spare tire.

■

Conditions that the tire pressure warn-

ing system may not function properly



P.277

■

If the tire pressure warning light fre-

quently comes on after blinking for 1

minute

If the tire pressure warning light frequently

comes on after blinking for 1 minute when

the engine switch is turned to IGNITION

ON mode, have it checked by your Lexus

dealer.

■

Warning buzzer

In some cases, the buzzer may not be heard

due to being in a noisy location or audio

sound.

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

The steering wheel may 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.

●

Stop your vehicle in a safe place as

soon as possible. Adjust the tire infla-

tion pressure immediately.

312

7-2. Steps to take in an emergency

WARNING

●

If the tire pressure warning light comes

on even after tire inflation pressure

adjustment, it is probable that you have

a flat tire. Check the tires. If a tire is flat,

change it with the spare tire and have

the flat tire repaired by the nearest

Lexus dealer.

●

Avoid abrupt maneuvering and brak-

ing. If the vehicle tires deteriorate, you

could lose control of the steering

wheel or the brakes.

■

If a blowout or sudden air leakage

should occur

The tire pressure warning system may

not activate immediately.

■

Maintenance of the tires

Each tire, including the spare (if pro-

vided), should be checked monthly when

cold and inflated to the inflation pressure

recommended by the vehicle manufac-

turer on the vehicle placard or tire infla-

tion pressure label (tire and load

information label). (If your vehicle has

tires of a different size than the size indi-

cated on the vehicle placard or tire infla-

tion pressure label [tire and load

information label], you should determine

the proper tire inflation pressure for

those tires.)

As an added safety feature, your vehicle

has been equipped with a tire pressure

monitoring system (TPMS-tire pressure

warning system) that illuminates a low

tire pressure telltale (tire pressure warn-

ing light) when one or more of your tires

is significantly under-inflated. Accord-

ingly, when the low tire pressure telltale

(tire pressure warning light) illuminates,

you should stop and check your tires as

soon as possible, and inflate them to the

proper pressure. Driving on a signifi-

cantly under-inflated tire causes the tire

to overheat and can lead to tire failure.

Under-inflation also reduces fuel effi-

ciency and tire tread life, and may affect

the vehicle’s handling and stopping abil-

ity.

Please note that the TPMS (tire pressure

warning system) is not a substitute for

proper tire maintenance, and it is the

driver’s responsibility to maintain correct

tire pressure, even if under-inflation has

not reached the level to trigger illumina-

tion of the TPMS low tire pressure telltale

(tire pressure warning light).

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.

313

7-2. Steps to take in an emergency

When trouble

ari

ses

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 following 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 following actions
have been performed, contact your
Lexus dealer.

314

7-2. Steps to take in an emergency

The warning lights and warning buzzers operate as follows depending on the con-
tent of the message. If a message indicates the need for inspection by a dealer, have
the vehicle inspected by your Lexus dealer immediately.



F SPORT models (main meter
moved to the right)

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 following 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

315

7-2. Steps to take in an emergency

When trouble

ari

ses



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.305)

: 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 “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.159)

■

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.159, 308)

●

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.159, 305)

●

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

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

316

7-2. Steps to take in an emergency

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.256)

: 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.256)

: 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 is scheduled to

be changed. (The indicator will not work

properly unless the oil maintenance data

has been reset.)
Check the engine oil, and change if neces-

sary. After changing the engine oil, the oil

change system should be reset. (



P.268)

■

If “Oil Maintenance Required” is dis-

played

Indicates that the engine oil should be

changed. (After the engine oil is changed

and the oil maintenance data has been

reset.)
Check and change the engine oil, and oil fil-

ter by your Lexus dealer. After changing the

engine oil, the oil change system should be

reset. (



P.268)

■

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 “See Owner’s Manual” is displayed

●

If the following messages are shown, fol-

lowing the instructions, accordingly.

• “Engine Coolant Temp High” (



P.333)

• “Transmission Fluid Temp High” (



P.130)

●

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.

• “Braking Power Low”

• “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.

• “Oil Pressure Low”

• “Charging System Malfunction”

NOTICE

■

“High Power Consumption Partial

Limit On AC/Heater Operation” is

frequently shown

There is a possible malfunction relating

to the charging system or the battery

may be deteriorating. Have the vehicle

inspected by your Lexus dealer.

317

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.296)



Type A

Guide pin
Wheel bolt socket
Jack handle
Wheel bolt wrench

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.274

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

Location of the spare tire, jack and tools

A
B
C
D

319

7-2. Steps to take in an emergency

n t

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Hold the hook and lift up the lug-
gage mat.

Secure the luggage mat using the
hook.

Remove the tool tray.

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.

WARNING

●

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.

●

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

320

7-2. Steps to take in an emergency

Secure the luggage mat using the
hook. (



P.319)

Remove the 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

use the wrench or other tools.)

Chock the tires.

NOTICE

■

To prevent damage to luggage mat

When closing the trunk lid, do not leave

the luggage mat lever hooked on the

edge of the trunk.

Taking out the spare tire

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

321

7-2. Steps to take in an emergency

n t

ris

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.

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

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

322

7-2. Steps to take in an emergency

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.

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

Lower the vehicle.

Securely tighten the wheel bolts
two or three times in the order
shown in the 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 spare tire

●

The spare tire is identified by the label

323

7-2. Steps to take in an emergency

n t

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“TEMPORARY USE ONLY” on the tire

sidewall.

●

Use the spare tire temporarily, and only in

an emergency.

●

Make sure to check the tire inflation pres-

sure of the spare tire. (



P.346)

■

When using the spare tire

As the spare tire is not equipped with a tire

pressure warning valve and transmitter, low

inflation pressure of the spare tire will not be

indicated by the tire pressure warning sys-

tem. Also, if you replace the spare tire after

the tire pressure warning light comes on,

the light remains on.

■

When the spare tire is equipped

The vehicle becomes lower when driving

with the spare tire compared to when driv-

ing 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

except for vehicles with LDH and

19-inch tires)

Install the spare tire on one of the front

wheels of the vehicle. Perform the following

steps and fit tire chains to the rear tires:

Replace a front tire with the 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.

●

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 or the 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 that has

adhered when installing the wheel

bolts.



Steel wheel



Aluminum wheel

324

7-2. Steps to take in an emergency

WARNING

●

After replacing a tire, check the tight-

ening torque as soon as possible.

●

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.

■

When using the spare tire

●

Remember that the spare tire provided

is specifically designed for use with

your vehicle. Do not use your spare

tire on another vehicle.

●

Do not use more than one spare tire

simultaneously.

●

Replace the 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 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

• Adaptive Variable Suspension System

(if equipped)

• LTA (Lane Tracing Assist)

• VGRS (if equipped)

• LDH (Lexus Dynamic Handling sys-

tem) (if equipped)

• DRS (Dynamic Rear Steering) (if

equipped)

• VDIM (Vehicle Dynamics Integrated

Management)

• Tire pressure warning system

• Lexus parking assist monitor

• Intuitive parking assist (if equipped)

• 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 (if equipped)

325

7-2. Steps to take in an emergency

n t

ris

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.126)



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



P.56)

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



The battery may be discharged.
(



P.330)



The battery terminal connections
may be loose or corroded.
(



P.271)

WARNING

■

Speed limit when using the spare tire

Do not drive at speeds in excess of 50

mph (80 km/h) when a spare tire is

installed on the vehicle.

The spare tire is not designed for driving

at high speeds. Failure to observe this

precaution may lead to an accident caus-

ing 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

■

Driving with tire chains and the spare

tire

Do not fit tire chains to the spare tire.

Tire chains may damage the vehicle body

and adversely affect driving perfor-

mance.

■

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.

If the engine will not start

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



P.126), 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.

326

7-2. Steps to take in an emergency

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.326)

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



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



P.271)



The battery may be discharged.
(



P.330)

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:

Set the parking brake.

Shift the shift lever to P.

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.

Emergency start function

327

7-2. Steps to take in an emergency

n t

ris

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 that were provided with your

vehicle.

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

328

7-2. Steps to take in an emergency

■

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.94)

■

Unlocking the door

Use the mechanical key (



P.82) in

order to perform the following opera-
tions:

Insert the mechanical key while
pulling on the driver’s door handle.

Unlocking the door.

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

■

Locking the door

Move the inside lock button to the
lock position.

Close the door.

■

Opening the trunk

Turn the mechanical key clockwise to
open. (



P.57)

If the electronic key does not
operate properly

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



P.94) 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, includ-

ing the card key, to your Lexus dealer.

Locking and unlocking the doors
and opening the trunk

329

7-2. Steps to take in an emergency

n t

ris

■

Key linked functions

Locks both side door

Closes the windows and moon roof (if
equipped) (turn and hold)

Unlocks the door

Turning the key rearward unlocks the
driver’s door. Turning the key again unlocks
the other door.

Opens the windows and moon roof (if
equipped) (turn and hold)

: These settings must be customized at

your Lexus dealer.

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.

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

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

330

7-2. Steps to take in an emergency

■

Stopping the engine

Shift the shift lever to P and press the engine

switch as you normally 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.287)

■

Alarm (For Canada)

Using the mechanical key to lock the doors

will not set the alarm system.

If a door is unlocked using the mechanical

key when the alarm system is set, the alarm

may be triggered.

■

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.128)

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.

(

Open the hood. (

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  .

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

331

7-2. Steps to take in an emergency

When trouble

ari

ses



RC350/RC300 AWD

Positive (+) battery terminal (your vehicle)
Positive (+) battery terminal (second vehicle)
Negative (-) battery terminal (second vehicle)
Solid, stationary, unpainted metallic point away from the battery and any mov-
ing parts as shown in the illustration



RC300

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 door 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

A
B
C
D

332

7-2. Steps to take in an emergency

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 dis-

charged, 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.

●

If the battery fluid level is excessively

low (



P.271), do not use 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.

333

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.



RC350/RC300 AWD

WARNING

●

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.

If your vehicle overheats

The following may indicate that
your vehicle is overheating.



The engine coolant temperature
gauge (



P.66) is in the red zone

or a loss of engine power is expe-
rienced. (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

334

7-2. Steps to take in an emergency

Radiator
Cooling fans

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



RC300

Radiator
Cooling fans

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

The coolant level is satisfactory if it
is between the full (“FULL” or “F”)
and low (“LOW” or “L”) lines on the
reservoir.



Engine (RC350/RC300 AWD)

Reservoir cap
“FULL” or “F”
“LOW” or “L”



Engine (RC300)

Reservoir cap
“FULL” or “F”
“LOW” or “L”



Intercooler (RC300)

Reservoir cap
“FULL” or “F”
“LOW” or “L”

A
B

A
B
C

335

7-2. Steps to take in an emergency

n t

ris

Add coolant if necessary.

Water can be used in an emergency if

coolant is unavailable.



Engine (RC350/RC300 AWD)



Engine (RC300)



Intercooler (RC300)

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 tem-

peratures.)

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.

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.

336

7-2. Steps to take in an emergency

WARNING

●

RC350/RC300 AWD: While the

engine and radiator are hot, do not

loosen or remove the coolant reser-

voir cap or coolant inlet cap. (The

coolant inlet cap is located under the

engine cover.)

High temperature steam or coolant

could spray out.

●

RC300: While the engine and radia-

tors are hot, do not loosen or remove

the coolant reservoir cap, coolant inlet

cap, or intercooler coolant reservoir

cap.

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.).

●

Do not use any coolant additive.

337

7-2. Steps to take in an emergency

n t

ris

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.

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

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.

340

8-1. Specifications

8-1.Specifications

: Unladen vehicle

: Vehicles with 265/35R19 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

185.0 in. (4700 mm)

Overall width

72.4 in. (1840 mm)

Overall height

54.9 in. (1395 mm)

Wheelbase

107.5 in. (2730 mm)

Tread

Front

62.2 in. (1580 mm)

Rear

63.0 in. (1600 mm)

61.8 in. (1570 mm)

Vehicle capacity weight (Occupants + luggage)

700 lb. (320 kg)

Seating capacity

4 (Front 2, Rear 2)

Vehicle identification

Lexus RC350 (2023 year). Manual in english - page 10