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LEXUS RC F (2019 year). Instruction - part 32

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7-2. Steps to take in an emergency

RC F_U

Inflate the tire until the recom-
mended pressure is reached.

The sealant will be injected and
the pressure will spike to 44 psi
(300 kPa, 3.0 kgf/cm

or bar) or

58 psi (400 kPa, 4.0 kgf/cm

bar), then gradually decrease.
The air pressure gauge will dis-
play the actual tire inflation pres-
sure about 1 minute (15 minutes at
low temperature) after the switch
is turned on.

• Turn the compressor switch off

and then check the tire inflation

pressure. Being careful not to

over inflate, check and repeat the

inflation procedure until the rec-

ommended tire inflation pressure

is reached.

• If the tire inflation pressure is still lower than the recommended level after infla-

tion for 10 minutes (35 minutes at low temperature) with the switch on, the tire

is too damaged to be repaired. Turn the compressor switch off and contact your

Lexus dealer.

• If the tire inflation pressure exceeds the recommended level, let out some air to

adjust the tire inflation pressure. (

P. 513, 548)

With the compressor switch off, disconnect the hose from the valve on the tire
and then pull out the power plug from the power outlet socket.

Some sealant may leak when the hose is removed.

Install the valve cap onto the valve of the emergency repaired tire.
Attach the air release cap to the end
of the hose.

If the air release cap is not attached, the

sealant may leak and the vehicle may

get dirty.

Temporarily store the bottle in the trunk while it is connected to the compres-
sor.
To spread the liquid sealant evenly within the tire, immediately drive safely for
about 3 miles (5 km) below 50 mph (80 km/h).

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7-2. Steps to take in an emergency

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After driving, stop your vehicle in a
safe place on a hard, flat surface and
reconnect the compressor.

Turn the compressor switch on and
wait for several seconds, then turn it
off. Check the tire inflation pressure.

If the tire inflation pressure is
below 19 psi (130 kPa, 1.3 kgf/cm

or bar): The puncture cannot be
repaired. Contact your Lexus
dealer.
If the tire inflation pressure is between 19 psi (130 kPa, 1.3 kgf/cm

or bar)

and a point below the recommended level: The tire can be repaired. Pro-
ceed to step .
If the tire inflation pressure is at the recommended level: Proceed to step

Turn the compressor switch on to inflate the tire until the recommended tire
inflation pressure is reached. Drive for about 3 miles (5 km) and then perform
step .
Attach the air release cap to the end
of the hose.

If the air release cap is not attached, the

sealant may leak and the vehicle may

get dirty.

Store the bottle in the trunk while it is connected to the compressor.
Taking precautions to avoid sudden braking, sudden acceleration and sharp
turns, drive carefully at under 50 mph (80 km/h) to your Lexus dealer that is
less than 62 miles (100 km) away for tire repair or replacement.

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7-2. Steps to take in an emergency

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■

Emergency tire puncture repair kit

●

The sealant has a limited lifespan. The expiry date is marked on the bottle. The sealant

should be replaced before the expiry date. Contact your Lexus dealer for replacement.

●

The sealant stored in the emergency tire puncture repair kit can be used only once to

temporarily repair a single tire. If the sealant has been used and needs to be purchased,

contact your Lexus dealer. The compressor is reusable.

●

The sealant can be used when the outside temperature is from -40

F (-40C) to

140

F (60C).

●

The kit is exclusively designed for size and type of tires originally installed on your vehi-

cle. Do not use it for tires that a different size than the original ones, or for any other

purposes.

●

If the sealant gets on your clothes, it may stain.

●

If the sealant adheres to a wheel or the surface of the vehicle body, the stain may not be

removable if it is not cleaned at once. Immediately wipe away the sealant with a wet

cloth.

●

During operation of the kit, a loud operation noise is produced. This does not indicate a

malfunction.

●

Do not use the emergency tire puncture repair kit to check or to adjust the tire pres-

sure.

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7-2. Steps to take in an emergency

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■

If the tire is inflated to more than the recommended level

Disconnect the hose from the valve.

Disconnect the hose from the valve, remove the air release cap from the hose and then

reconnect the hose.
Turn the compressor switch on and wait for several seconds, then turn it off. Check that

the air pressure indicator shows the recommended level. (

P. 548)

If the air pressure is lower than the recommended level, turn the compressor switch on

again and repeat the inflation procedure until the recommended pressure is reached.

■

After a tire is repaired with the emergency tire puncture repair kit

●

The tire pressure warning valve and transmitter should be replaced.

●

Even if the tire inflation pressure is at the recommended level, the tire pressure warning

light may come on/flash.

■

Note for checking the emergency tire puncture repair kit
Check the sealant expiry date occasionally.

The expiry date is shown on the bottle. Do not use sealant whose expiry date has already

passed. Otherwise, repairs conducted using the emergency tire puncture repair kit may

not be performed properly.

Install the air release cap to the end of the

hose and push the protrusion on the air

release cap into the valve to let some air out.

WARNING

■

Caution while driving
Observe the following precautions.

Failure to do so may cause an accident.

●

The emergency tire puncture repair kit is made exclusively for your vehicle. Do not

use it on other vehicles.

●

Do not use the emergency tire puncture repair kit for tires that are a different size

than the specified ones or for any other purpose. Doing so may cause the tires to not

be repaired properly.

■

Precautions for use of the sealant

●

Ingesting the sealant is hazardous to your health. If you ingest sealant, consume as

much water as possible, then immediately consult a doctor.

●

If sealant gets in eyes or adheres to skin, immediately wash it off with water. If discom-

fort persists, consult a doctor.

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7-2. Steps to take in an emergency

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WARNING

■

When fixing the flat tire
Observe the following precautions.

Failure to do so may result in death or serious injury.

●

Stop your vehicle in a safe and flat area.

●

Do not touch the wheels or the area around the brakes immediately after the vehicle

has been driven.

After the vehicle has been driven, the wheels and the area around the brakes may be

extremely hot. Touching these areas with hands, feet or other body parts may result in

burns.

●

Connect the valve and hose securely with the tire installed on the vehicle.
• If the hose is not properly connected to the valve, air leakage may occur or sealant

may be sprayed out.

• If the hose comes off the valve while inflating the tire, there is a risk that the hose

will move abruptly due to air pressure.

• After inflation of the tire has completed, the sealant may splatter when the hose is

disconnected or some air is let out of the tire.

●

Follow the operation procedure to repair the tire. If the procedure is not followed, the

sealant may spray out.

●

Keep back from the tire while it is being repaired, as there is a chance of it bursting

while the repair operation is being performed. If you notice any cracks or deforma-

tion of the tire, turn off the compressor switch and stop the repair operation immedi-

ately.

●

The kit may overheat if operated for a long period of time. Do not operate the com-

pressor continuously for more than 35 minutes.

●

Parts of the kit become hot during operation. Be careful handling the kit during and

after operation. Do not touch the metal part around the connecting area between the

bottle and compressor. It will be extremely hot.

●

Do not attach the vehicle speed warning sticker to an area other than the one indi-

cated. If the sticker is attached to an area where an SRS airbag is located, such as the

pad of the steering wheel, it may prevent the SRS airbag from operating properly.

■

Driving to spread the liquid sealant evenly

●

Drive the vehicle carefully at a low speed. Be especially careful when turning and cor-

nering.

●

If the vehicle does not drive straight or you feel a pull through the steering wheel, stop

the vehicle and check the following:
• Tire condition. The tire may have separated from the wheel.

• Tire inflation pressure. If tire inflation pressure is 19 psi (130 kPa, 1.3 kgf/cm

bar) or below, this may indicate severe tire damage.

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NOTICE

■

When performing an emergency repair

●

Perform the emergency repair without removing the nail or screw that has punctured

the tread of the tire. If the object that has punctured the tire is removed, repair by the

emergency tire puncture repair kit may not be possible.

●

The kit is not waterproof. Make sure that the kit is not exposed to water, such as when

it is being used in the rain.

●

Do not put the kit directly onto dusty ground such as sand at the side of the road. If the

kit vacuums up dust etc., a malfunction may occur.

●

Make sure to stand the kit with the bottle vertical. The kit cannot work properly if it is

laid on its side.

■

Handling the emergency tire puncture repair kit

●

The compressor power source should be 12 V DC suitable for vehicle use. Do not

connect the compressor to any other source.

●

If gasoline splatters on the kit, the kit may deteriorate. Take care not to allow gasoline

to contact it.

●

Store the emergency tire puncture repair kit in the trunk.

The kit may be thrown around during sudden braking and so forth, damaging the kit.

●

Store the kit in its assigned place out of reach of children.

●

Do not disassemble or modify the kit. Do not subject parts such as the air pressure

indicator to impacts. This may cause a malfunction.

■

To avoid damage to the tire pressure warning valves and transmitters
When a tire is repaired with liquid sealants, the tire pressure warning valve and trans-

mitter may not operate properly. If a liquid sealant is used, contact your Lexus dealer as

soon as possible. After use of liquid sealant, make sure to replace the tire pressure

warning valve and transmitter when repairing or replacing the tire. (

P. 413)

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7-2. Steps to take in an emergency

RC F_U

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 following correct starting procedures.
(

P. 207)

●

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

P. 79)

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

●

The battery may be discharged. (

P. 522)

●

The battery terminal connections may be loose or corroded.

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. 517)

If the engine will not start

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

P. 207), consider each of the following points:

The engine will not start even though the starter motor operates nor-
mally.

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

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7-2. Steps to take in an emergency

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

●

One or both of the battery terminals may be disconnected.

●

The battery may be discharged. (

P. 522)

●

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 normally:

Set the parking brake.
Shift the shift lever to P.
Turn the engine switch to ACCESSORY 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 mal-
functioning. Have the vehicle inspected by your Lexus dealer.

The starter motor does not turn over, the interior lights and headlights
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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Use the mechanical key (

P. 141) in order to perform the following operations:

■

Unlocking the door

Insert the mechanical key while
pulling on the driver’s door han-
dle.

Unlocking the door.

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

If the electronic key does not operate properly

If communication between the electronic key and vehicle is interrupted (

P.

158) 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 following the procedure below.

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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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. 81)

■

Key linked functions

: These settings must be customized at your Lexus dealer.

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)

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7-2. Steps to take in an emergency

RC F_U

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 cus-

tomization setting, the engine switch will

turn to ACCESSORY mode.

Firmly depress the brake pedal and check that

is shown on the multi-

information display.
Press the engine switch.

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

■

Stopping the engine
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 electronic

key battery be replaced immediately when the battery is depleted. (

P. 427)

■

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. 208)

■

When the electronic key does not work properly

●

Make sure that the smart access system with push-button start has not been deacti-

vated in the customization setting. If it is off, turn the function on.

(Customizable features:

P. 569)

●

Check if battery-saving mode is set. If it is set, cancel the function. (

P. 158)

Starting the engine

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7-2. Steps to take in an emergency

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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.

522

7-2. Steps to take in an emergency

RC F_U

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 situa-

tion, the alarm may activate and doors

locked. (



P. 81)

Open the hood. (

P. 393)

Remove the engine cover. (RC F)
Raise the front of the engine cover to
remove the front clips, and then raise
the rear of the engine cover to
remove the rear clips.

If the vehicle battery is discharged

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

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7-2. Steps to take in an emergency

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Connect the jumper cables according to the following procedure:



RC350/RC300 AWD



RC300



RC F

Connect a positive jumper cable clamp to the positive (+) battery terminal
on your vehicle.
Connect the clamp on the other end of the positive cable to the positive (+)
battery terminal on the second vehicle.
Connect a negative cable clamp to the negative (-) battery terminal on the
second vehicle.
Connect the clamp at the other end of the negative cable to a solid, station-
ary, unpainted metallic point away from the battery and any moving parts,
as shown in the illustration.

524

7-2. Steps to take in an emergency

RC F_U

Start the engine of the second vehicle. Increase the engine speed slightly and
maintain at that level for approximately 5 minutes to recharge the battery of
your vehicle.
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 vehicle inspected at your Lexus dealer as soon
as possible.

■

Starting the engine when the battery is discharged
The engine cannot be started by push-starting.

■

To prevent battery discharge

●

Turn off the headlights and the audio system while the engine is off.

●

Turn off any unnecessary electrical components 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 discharge gradually even when the vehicle is not

in use, due to natural discharge and the draining effects of certain electrical appliances. 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 battery

●

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 discharged.

Before disconnecting the battery, 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.

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7-2. Steps to take in an emergency

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WARNING

■

Avoiding battery fires or explosions
Observe the following precautions to prevent accidentally igniting the flammable gas

that may be emitted from the battery:

●

Make sure each jumper cable is connected 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 “+” terminal 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 corrosive acidic electrolyte, while related parts

contain lead and lead compounds. Observe the following precautions when handling

the battery:

●

When working with the battery, always wear safety glasses and take care not to allow

any battery fluids (acid) to come into contact with skin, clothing or the vehicle body.

●

Do not lean over the battery.

●

In the event that battery fluid comes into contact with the skin or eyes, immediately

wash the affected area with water and seek medical attention.

Place a wet sponge or cloth over the affected area until medical attention can be

received.

●

Always wash your hands after handling the battery support, terminals, and other bat-

tery-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 entangled in the

cooling fans or engine drive belt.

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