LEXUS RC300, RC350 (2019 year). Instruction — part 19

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7-2. Steps to take in an emergency

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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 nut 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.

Slightly loosen the wheel nuts (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

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

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7-2. Steps to take in an emergency

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point positions.

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

Remove all the wheel nuts 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 surface.

If foreign matter is on the wheel contact

surface, the wheel nuts may loosen while

the vehicle is in motion, causing the tire to

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.

●

Failure to follow these precautions

could cause the wheel nuts to loosen

and the tire to fall off, resulting in death

or serious injury.

• Never use oil or grease on the wheel

bolts or wheel nuts.Oil and grease may

cause the wheel nuts to be excessively

tightened, leading to bolt or disc wheel

damage. In addition, the oil or grease

can cause the wheel nuts to loosen and

the wheel may fall off, causing a serious

accident. Remove any oil or grease

from the wheel bolts or wheel nuts.

• Have the wheel nuts tightened with a

torque wrench to 76 ft•lbf (103 N•m,

10.5 kgf•m) as soon as possible after

changing wheels.

• Do not attach a heavily damaged

wheel ornament, as it may fly off the

wheel while the vehicle is moving.

• When installing a tire, only use wheel

nuts that have been specifically

designed for that wheel.

• If there are any cracks or deformations

in the bolt screws, nut threads or bolt

holes of the wheel, have the vehicle

inspected by your Lexus dealer.

Installing the spare tire

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7-2. Steps to take in an emergency

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When trouble

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ses

come off.

Install the spare tire and loosely
tighten each wheel nut by hand by
approximately the same amount.

When replacing an aluminum wheel with a

steel wheel, tighten the wheel nuts until the
tapered portion

comes into loose con-

tact with the disc wheel seat

When replacing an aluminum wheel with

an aluminum wheel, turn the wheel nuts
until the washers

come into contact

with the disc wheel

Lower the vehicle.

Firmly tighten each wheel nut two
or three times in the order shown in
the illustration.

Tightening torque:

76 ft•lbf (103 N•m, 10.5 kgf•m)

Stow the flat tire, tire jack and all
tools.

■

The spare tire

●

The spare tire is identified by the label

“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.322)

■

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.

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7-2. Steps to take in an emergency

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■

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

■

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

• PCS

• EPS

• Adaptive Variable Suspension System

(if equipped)

• LDA (Lane Departure Alert with

steering control)

• 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)

■

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.

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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.125)

 There may be a malfunction in the

engine immobilizer system.
(

P.57)

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

(

P.306)

 The battery terminal connections

may be loose or corroded.
(

P.253)

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.125), 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.

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7-2. Steps to take in an emergency

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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.302)

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

may be disconnected. (

P.253)

 The battery may be discharged.

(

P.306)

 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:

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

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7-2. Steps to take in an emergency

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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

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7-2. Steps to take in an emergency

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■

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.58)

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

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7-2. Steps to take in an emergency

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■

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

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7-2. Steps to take in an emergency

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■

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.265)

■

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.126)

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.59)

Open the hood. (

P.245)

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

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7-2. Steps to take in an emergency

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When trouble

ari

ses

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 .

 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.

A
B
C
D

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7-2. Steps to take in an emergency

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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
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.

■

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:

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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

●

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.

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

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7-2. Steps to take in an emergency

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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

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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.

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7-2. Steps to take in an emergency

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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

couldspray 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.

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LEXUS RC300, RC350 (2019 year). Instruction — part 19

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