Lexus LC Cabriolet (2021 year). Manual in english

336

6-3. Do-it-yourself maintenance

Pull the hood lock release lever.

The hood will pop up slightly.

Pull up the auxiliary catch lever and
lift the hood.

WARNING

Take care because brake fluid can

harm your hands or eyes and damage

painted surfaces. If fluid gets on your

hands or in your eyes, flush the

affected area with clean water imme-

diately.

If you still experience discomfort, con-

sult a doctor.

When working near the electric cool-

ing fan or radiator grille

Be sure the engine switch is off.

With the engine switch in ON, the elec-

tric cooling fan may automatically start to

run if the air conditioning is on and/or the

coolant temperature is high. (



P.341)

Safety glasses

Wear safety glasses to prevent flying or

falling material, fluid spray, etc. from get-

ting in your eyes.

NOTICE

If you remove the air cleaner filter

Driving with the air cleaner filter

removed may cause excessive engine

wear due to dirt in the air.

If the fluid level is low or high

It is normal for the brake fluid level to go

down slightly as the brake pads wear or

when the fluid level in the accumulator is

high.

If the reservoir needs frequent refilling, it

may indicate a serious problem.

Hood

Opening the hood

WARNING

Pre-driving check

Check that the hood is fully closed and

locked.

If the hood is not locked properly, it may

open while the vehicle is in motion and

cause an accident, which may result in

death or serious injury.

338

6-3. Do-it-yourself maintenance

Fuse box (



P.371)

Engine oil level dipstick (



P.338)

Engine coolant reservoir (



P.340)

Engine oil filler cap (



P.339)

Washer fluid tank (



P.341)

Electric cooling fan

Condenser (



P.341)

Radiator (



P.341)

For right-hand drive vehicles:
The fuse box is located on the opposite side of the engine compartment.

Battery



P.342

With the engine at operating tempera-

Engine compartment

Components

A
B
C
D

E
F

Checking and adding the engine
oil

339

6-3. Do-it-yourself maintenance

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ture and turned off, check the oil level
on the dipstick.

Checking the engine oil

Park the vehicle on level ground.

After warming up the engine and turning it

off, wait more than 5 minutes for the oil to

drain back into the bottom of the engine.

Holding a rag under the end, pull
the dipstick out.

Wipe the dipstick clean.

Reinsert the dipstick fully.

Holding a rag under the end, pull
the dipstick out and check the oil
level.

Low

Normal

Excessive

The shape of the dipstick may differ

depending on the type of vehicle or

engine.

Wipe the dipstick and reinsert it
fully.

Checking the oil type and prepar-
ing the items

Make sure to check the oil type and
prepare the items needed before add-
ing oil.



Engine oil selection



P.428



Oil quantity (Low



Full)

1.5 L (1.6 qt., 1.3 Imp. qt.)



Item

Clean funnel

Adding engine oil

If the oil level is below or near the low
level mark, add engine oil of the same
type as that already in the engine.

Remove the oil filler cap by turning
it counterclockwise.

Add engine oil slowly, checking the
dipstick.

Install the oil filler cap by turning it
clockwise.

Engine oil consumption

A certain amount of engine oil will be con-

sumed while driving. In the following situa-

A
B
C

340

6-3. Do-it-yourself maintenance

tions, oil consumption may increase, and

engine oil may need to be refilled in

between oil maintenance intervals.

When the engine is new, for example

directly after purchasing the vehicle or

after replacing the engine

If low quality oil or oil of an inappropriate

viscosity is used

When driving at high engine speeds or

with a heavy load, or when driving while

accelerating or decelerating frequently

When leaving the engine idling for a long

time, or when driving frequently through

heavy traffic

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

Engine coolant reservoir

Reservoir cap

“F” line

“L” line

If the level is on or below the “L” line, add
coolant up to the “F” line. (



P.420)

Coolant selection

Only use “Toyota Super Long Life Coolant”

or a similar high quality ethylene glycol

based non-silicate, non-amine, non-nitrite,

and non-borate coolant with long-life

hybrid organic acid technology.
“Toyota Super Long Life Coolant” is a mix-

ture of 50% coolant and 50% deionized

water. (Minimum temperature: -35°C [-

31°F])
For more details about coolant, contact any

authorized Lexus retailer or Lexus autho-

WARNING

Used engine oil

Used engine oil contains potentially

harmful contaminants which may

cause skin disorders such as inflamma-

tion and skin cancer, so care should be

taken to avoid prolonged and

repeated contact. To remove used

engine oil from your skin, wash thor-

oughly with soap and water.

Dispose of used oil and filters only in a

safe and acceptable manner. Do not

dispose of used oil and filters in house-

hold trash, in sewers or onto the

ground.

Call any authorized Lexus retailer or

Lexus authorized repairer, or any reli-

able repairer, service station or auto

parts store for information concerning

recycling or disposal.

Do not leave used engine oil within the

reach of children.

NOTICE

To prevent serious engine damage

Check the oil level on a regular basis.

When replacing the engine oil

Be careful not to spill engine oil on the

vehicle components.

Avoid overfilling, or the engine could

be damaged.

Check the oil level on the dipstick

every time you refill the vehicle.

Be sure the engine oil filler cap is prop-

erly tightened.

Checking the engine coolant

A
B
C

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6-3. Do-it-yourself maintenance

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rized repairer, or any reliable repairer.

If the coolant level drops within a short

time of replenishing

Visually check the radiator, hoses, engine

coolant reservoir caps, drain cock and

water pump.

If you cannot find a leak, have any autho-

rized Lexus retailer or Lexus authorized

repairer, or any reliable repairer, test the

cap and check for leaks in the cooling sys-

tem.

Check the radiator and condenser and
clear away any foreign objects.
If either of the above parts is extremely
dirty or you are not sure of their condi-
tion, have your vehicle inspected by
any authorized Lexus retailer or Lexus

authorized repairer, or any reliable
repairer.

If any washer does not work or “Wind-
shield Washer Fluid Low” is shown on
the multi-information display, the
washer tank may be empty. Add
washer fluid.

WARNING

When the engine is hot

Do not remove the engine coolant reser-

voir cap or the coolant inlet cap.

(



P.422)

The cooling system may be under pres-

sure and may spray hot coolant if the cap

is removed, causing serious injuries, such

as burns.

NOTICE

When adding coolant

Coolant is neither plain water nor

straight antifreeze. The correct mixture

of water and antifreeze must be used to

provide proper lubrication, corrosion

protection and cooling. Be sure to read

the antifreeze or coolant label.

If you spill coolant

Be sure to wash it off with water to pre-

vent it from damaging parts or paint.

Checking the radiator and con-
denser

WARNING

When the engine is hot

Do not touch the radiator and condenser

as they may be hot and cause serious

injuries, such as burns.

Checking and adding the washer
fluid

WARNING

When adding washer fluid

Do not add washer fluid when the engine

is hot or running as washer fluid contains

alcohol and may catch fire if spilled on

the engine etc.

342

6-3. Do-it-yourself maintenance

The battery is located in the trunk.

Before recharging

When recharging, the battery produces

hydrogen gas which is flammable and

explosive. Therefore, observe the following

precautions before recharging:

If recharging with the battery installed on

the vehicle, be sure to disconnect the

ground cable.

Make sure the power switch on the char-

ger is off when connecting and discon-

necting the charger cables to the battery.

After recharging/reconnecting the bat-

tery

Unlocking the doors using the smart

entry & start system may not be possible

immediately after reconnecting the bat-

tery. If this happens, use the wireless

remote control or the mechanical key to

lock/unlock the doors.

Start the engine with the engine switch in

ACC mode. The engine may not start

with the engine switch turned off. How-

ever, the engine will operate normally

from the second attempt.

The engine switch mode is recorded by

the vehicle. If the battery is reconnected,

the vehicle will return the engine switch

mode to the status it was in before the

battery was disconnected. Make sure to

turn off the engine switch before discon-

NOTICE

Do not use any fluid other than

washer fluid

Do not use soapy water or engine anti-

freeze instead of washer fluid.

Doing so may cause streaking on the

vehicle’s painted surfaces, as well as

damaging the pump leading to problems

of the washer fluid not spraying.

Diluting washer fluid

Dilute washer fluid with water as neces-

sary.

Refer to the freezing temperatures listed

on the label of the washer fluid bottle.

Battery

Location

343

6-3. Do-it-yourself maintenance

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nect the battery. Take extra care when

connecting the battery if the engine

switch mode prior to discharge is

unknown.

If the engine will not start even after multiple

attempts at all methods above, contact any

authorized Lexus retailer or Lexus autho-

rized repairer, or any reliable repairer.

Pull the strap upwards to lift up the lug-
gage mat.

WARNING

Chemicals in the battery

The battery contains poisonous and cor-

rosive sulfuric acid and may produce

hydrogen gas which is flammable and

explosive. To reduce the risk of death or

serious injury, take the following precau-

tions while working on or near the bat-

tery:

Do not cause sparks by touching the

battery terminals with tools.

Do not smoke or light a match near the

battery.

Avoid contact with eyes, skin and

clothes.

Never inhale or swallow electrolyte.

Wear protective safety glasses when

working near the battery.

Keep children away from the battery.

Where to safely charge the battery

Always charge the battery in an open

area. Do not charge the battery in a

garage or closed room where there is

insufficient ventilation.

How to recharge the battery

Recharge at a current of 5 A or less and

make sure that the recharging period

does not exceed a total of 12 hours.

Emergency measures regarding

electrolyte

If electrolyte gets in your eyes

Flush your eyes with clean water for at

least 15 minutes and get immediate

medical attention. If possible, continue

to apply water with a sponge or cloth

while traveling to the nearest medical

facility.

If electrolyte gets on your skin

Wash the affected area thoroughly. If

you feel pain or burning, get medical

attention immediately.

If electrolyte gets on your clothes

It can soak through clothing on to your

skin. Immediately take off the clothing

and follow the procedure above if nec-

essary.

If you accidentally swallow electrolyte

Drink a large quantity of water or milk.

Get emergency medical attention

immediately.

NOTICE

When recharging the battery

Never recharge the battery while the

engine is running. Also, be sure all acces-

sories are turned off.

Removing the battery cover

344

6-3. Do-it-yourself maintenance

Make sure that the battery terminals
are not corroded and that there are no
loose connections, cracks, or loose
clamps.

Terminals

Hold-down clamp

Check that the level is upper than the
center between the bottom of the bat-
tery lid and “LOWER LEVEL” line.

Bottom of the battery lid

“LOWER LEVEL” line

Center of

and

If the fluid level is below

, replace the

battery.

Check if the treadwear indicators are
showing on the tires. Also check the
tires for uneven wear, such as exces-
sive wear on one side of the tread.

New tread

Worn tread

Treadwear indicator

The location of treadwear indicators is
shown by a “TWI” or “

” mark, etc.,

molded into the sidewall of each tire.
Replace the tires if the treadwear indica-
tors are showing on a tire.

Exterior

Checking the battery fluid

A
B

A
B
C

Tires

Replace or rotate tires in accor-
dance with maintenance schedules
and treadwear.

Checking tires

A
B
C

345

6-3. Do-it-yourself maintenance

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When to replace your vehicle’s tires

Tires should be replaced if:

The treadwear indicators are showing on

a tire.

You have tire damage such as cuts, splits,

cracks deep enough to expose the fabric,

and bulges indicating internal damage

A tire goes flat repeatedly or cannot be

properly repaired due to the size or loca-

tion of a cut or other damage

If you are not sure, consult any authorized

Lexus retailer or Lexus authorized repairer,

or any reliable repairer.

Tire life

Any tire over 6 years old must be checked

by a qualified technician even if it has sel-

dom or never been used or damage is not

obvious.

Low profile tires (21-inch tires)

Generally, low profile tires will wear more

rapidly and tire grip performance will be

reduced on snowy and/or icy roads when

compared to standard tires. Be sure to use

snow tires on snowy and/or icy roads and

drive carefully at a speed appropriate for

road and weather conditions.

If the tread on snow tires wears down

below 4 mm (0.16 in.)

The effectiveness of the tires as snow tires is

lost.

Rotate the tires in the order shown.

WARNING

When inspecting or replacing tires

Observe the following precautions to

prevent accidents.

Failure to do so may cause damage to

parts of the drivetrain as well as danger-

ous handling characteristics, which may

lead to an accident resulting in death or

serious injury.

Do not mix tires of different makes,

models or tread patterns.

Also, do not mix tires of remarkably

different treadwear.

Do not use tire sizes other than those

recommended by Lexus.

Do not mix differently constructed

tires (radial, bias-belted or bias-ply

tires).

Do not mix summer, all season and

snow tires.

Do not use tires that have been used

on another vehicle.

Do not use tires if you do not know

how they were used previously.

NOTICE

Driving on rough roads

Take particular care when driving on

roads with loose surfaces or potholes.

These conditions may cause losses in tire

inflation pressure, reducing the cushion-

ing ability of the tires. In addition, driving

on rough roads may cause damage to

the tires themselves, as well as the vehi-

cle’s wheels and body.

Low profile tires (21-inch tires)

Low profile tires may cause greater dam-

age than usual to the tire wheel when

sustaining impact from the road surface.

Therefore, pay attention to the following:

Be sure to use proper tire inflation

pressure. If tires are under-inflated,

they may be damaged more severely.

Avoid potholes, uneven pavement,

curbs and other road hazards. Failure

to do so may lead to severe tire and

wheel damage.

If tire inflation pressure of each tire

becomes low while driving

Do not continue driving, or your tires

and/or wheels may be ruined.

Tire rotation

346

6-3. Do-it-yourself maintenance



Vehicles with front and rear tires of
the same size



Vehicles with front and rear tires of
differing sizes

To equalize tire wear and help extend tire
life, Lexus recommends that tire rotation is
carried out approximately every 10000
km (6000 miles).
Do not fail to initialize the tire pressure
warning system after tire rotation.

When rotating the tires

Make sure that the engine switch is OFF. If

the tires are rotated while the engine switch

is in ON, the tire position information will

not be updated.

If this accidentally occurs, either turn the

engine switch to OFF and then to ON, or

initialize the tire pressure warning system

after checking that the tire pressure is prop-

erly adjusted.

When run-flat tires are installed, the
vehicle can be driven for a maximum of
160 km (100 miles) at a speed below
80 km/h (50 mph) after any tire goes
flat. (However, the vehicle speed may
not increase to near 80 km/h [50
mph] depending on weather or driving
conditions.)

A run-flat tire has a

mark on

the sidewall.

Make sure to replace the flat tire before
the vehicle has been driven for near 160
km (100 miles). Also, do not use a repaired
tire.

Run-flat tires

The run-flat tires are for only this vehicle.

Do not use the tires on other vehicles.

Do not mix run-flat tires and normal tires.

If non-genuine Lexus wheels are used, it

may be impossible to sufficiently demon-

strate the performance of run-flat tires.

Your vehicle is equipped with a tire
pressure warning system that uses tire
pressure warning valves and transmit-
ters to detect low tire inflation pressure
before serious problems arise.



If the tire pressure drops below a
predetermined level, the driver is
warned by a screen display and a
warning light. (



P.393)



The tire pressure detected by the
tire pressure warning system can be
displayed on the multi-information

Run-flat tires

Tire pressure warning system

347

6-3. Do-it-yourself maintenance

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display. (



P.93)

The illustration used is intended as an
example, and may differ from the image
that is actually displayed on the multi-infor-
mation display.

Routine tire inflation pressure checks

The tire pressure warning system does not

replace routine tire inflation pressure

checks. Make sure to check tire inflation

pressure as part of your routine of daily

vehicle checks.

Situations in which the tire pressure

warning system may not operate prop-

erly

In the following cases, the tire pressure

warning system may not operate prop-

erly.

• If non-genuine Lexus wheels are used.

• A tire has been replaced with a tire that is

not an OE (Original Equipment) tire.

• A tire has been replaced with a tire that is

not of the specified size.

• Tire chains etc. are equipped.

• An auxiliary-supported run-flat tire is

equipped.

• If a window tint that affects the radio wave

signals is installed.

• If there is a lot of snow or ice on the vehi-

cle, particularly around the wheels or

wheel housings.

• If the tire inflation pressure is extremely

higher than the specified level.

• If wheels without tire pressure warning

valves and transmitters are used.

• If the ID code on the tire pressure warn-

ing valves and transmitters is not regis-

tered in the tire pressure warning

computer.

Performance may be affected in the fol-

lowing situations.

• Near a TV tower, electric power plant,

gas station, radio station, large display,

airport or other facility that generates

strong radio waves or electrical noise

• When carrying a portable radio, cellular

phone, cordless phone or other wireless

communication device

If tire position information is not correctly
displayed due to the radio wave conditions,
the display may be corrected by driving and
changing the radio wave conditions.

When the vehicle is parked, the time

taken for the warning to start or go off

could be extended.

When tire inflation pressure declines rap-

idly for example when a tire has burst, the

warning may not function.

Warning performance of the tire pres-

sure warning system

The warning of the tire pressure warning

system will change in accordance with the

conditions under which it was initialized. For

this reason, the system may give a warning

even if the tire pressure does not reach a

low enough level, or if the pressure is higher

than the pressure that was adjusted to when

the system was initialized.

356

6-3. Do-it-yourself maintenance

When replacing tires or wheels, tire
pressure warning valves and transmit-
ters must also be installed.
When new tire pressure warning
valves and transmitters are installed,
new ID codes must be registered in the
tire pressure warning computer and
the tire pressure warning system must
be initialized. (



P.358)

When replacing the tires and wheels

If the ID code of the tire pressure warning

valve and transmitter is not registered, the

tire pressure warning system will not work

properly. After driving for about 10 minutes,

the tire pressure warning light blinks for 1

minute and stays on to indicate a system

malfunction.

Installing tire pressure warning
valves and transmitters

NOTICE

Repairing or replacing tires, wheels,

tire pressure warning valves, trans-

mitters and tire valve caps

When removing or fitting the wheels,

tires or the tire pressure warning

valves and transmitters, contact any

authorized Lexus retailer or Lexus

authorized repairer, or any reliable

repairer as the tire pressure warning

valves and transmitters may be dam-

aged if not handled correctly.

Make sure to install the tire valve caps.

If the tire valve caps are not installed,

water could enter the tire pressure

warning valves and the tire pressure

warning valves could be bound.

When replacing tire valve caps, do not

use tire valve caps other than those

specified. The cap may become stuck.

357

6-3. Do-it-yourself maintenance

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The tire pressure warning system
must be initialized in the following
circumstances:



When rotating the tires.



When the tire inflation pressure is
changed when changing traveling
speed.



When the tire inflation pressure is
changed such as when changing tire
size. (When there are multiple spec-
ified pressures)



After registering the ID codes.
(



P.358)

When the tire pressure warning sys-
tem is initialized, the current tire infla-
tion pressure is set as the benchmark
pressure.

How to initialize the tire pressure
warning system

Park the vehicle in a safe place and
turn the engine switch off.

Initialization cannot be performed while

the vehicle is moving.

Adjust the tire inflation pressure to
the specified cold tire inflation
pressure level.

Make sure to adjust the tire pressure to the

specified cold tire inflation pressure level.

The tire pressure warning system will oper-

ate based on this pressure level.

Turn the engine switch to ON.

Press

of the meter con-

trol switches and select

Press

of the meter con-

trol switches and select “Vehicle
Settings”, and then press “OK”.

Press

of the meter con-

trol switches and select “TPWS
SET”, and then press “OK”.

Press

of the meter con-

trol switches and select “Set tire
pressure”, and then press and hold
“OK” until the tire pressure warn-
ing light starts blinking.

A message is displayed on the multi-infor-

mation display. Also, “--” is displayed for

inflation pressure of each tire on the multi-

information display while the tire pressure

warning system determines the position.

Drive the vehicle at approximately
40 km/h (25mph) or more for
approximately 10 to 30 minutes.

When initialization is complete, the infla-

tion pressure of each tire will be displayed

on the multi-information display.
Depending on the vehicle and driving con-

ditions, initialization may take up to

approximately 1 hour to complete.

The initialization operation

Make sure to carry out initialization after

adjusting the tire inflation pressure.

Also, make sure the tires are cold before

carrying out initialization or tire inflation

pressure adjustment.

Initializing the tire pressure
warning system

358

6-3. Do-it-yourself maintenance

If you have accidentally turned the engine

switch off during initialization, it is not

necessary to manually restart the initial-

ization again, as initialization will restart

automatically the next time the engine

switch is turned to ON.

If you accidentally perform initialization

when initialization is not necessary, adjust

the tire inflation pressure to the specified

level when the tires are cold, and conduct

initialization again.

While the position of each tire is being

determined and the inflation pressures

are not being displayed on the multi-

information display, if the inflation pres-

sure of a tire drops, the tire pressure

warning light will come on.

When initialization of the tire pressure

warning system has failed

Initialization may take longer to complete if

the vehicle is driven on an unpaved road.

When performing initialization, drive on a

paved road if possible. Depending on the

driving environment and condition of the

tires, initialization will be completed in

approximately 10 to 30 minutes. If initializa-

tion is not complete after driving approxi-

mately 10 to 30 minutes, continue driving

for a while. If the inflation of each tire is not

displayed after driving for approximately 1

hour, perform the following procedure.

Park the vehicle in a safe place for

approximately 20 minutes. Then drive

straight (with occasional left and right

turns) at approximately 40 km/h (25

mph) or more for approximately 10 to 30

minutes.

However, in the following situations, the tire
inflation pressure will not be recorded and
the system will not operate properly. Per-
form initialization again.

When performing initialization, the tire

pressure warning light does not blink 3

times. (Initialization will not occur while

driving)

After performing initialization, the tire

pressure warning light blinks for 1 minute

then stays on after driving for about 20

minutes.

If the inflation pressure of each tire is still not
displayed, have the vehicle inspected by
any authorized Lexus retailer or Lexus
authorized repairer, or any reliable
repairer.

When registering ID codes

Initialize the tire pressure warning system

after ID code registration. Initialization is

disabled if the system was initialized

before registration.

After ID code registration, the tires are

hot by driving. Initialize the tire pressure

warning system after the tires become

cold.

The tire pressure warning valve and
transmitter is equipped with a unique
ID code. When replacing a tire pres-
sure warning valve and transmitter, it is
necessary to register the ID code.
When registering the ID codes, per-
form the following procedure.

Turn the engine switch to ON.

Press

of the meter con-

trol switches and select

WARNING

When initializing the tire pressure

warning system

Do not initialize tire inflation pressure

without first adjusting the tire inflation

pressure to the specified level. Other-

wise, the tire pressure warning light may

not come on even if the tire inflation

pressure is low, or it may come on when

the tire inflation pressure is actually nor-

mal.

Registering ID codes

359

6-3. Do-it-yourself maintenance

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Press

of the meter con-

trol switches and select “Vehicle
Settings”, and then press “OK”.

Press

of the meter con-

trol switches and select “TPWS
SET”, and then press “OK”.

Press

of the meter con-

trol switches and select “Change
wheel set”, and then press and hold
“OK” until the tire pressure warn-
ing light starts blinking.

The change wheel set mode is activated

and registration is started.
A message is displayed on the multi-infor-

mation display, and “--” is displayed for

inflation pressure of each tire. Then, the tire

pressure warning light blinks rapidly for

approximately 1 minute and stays on.

Drive the vehicle at 40 km/h
(25mph) or more for approxi-
mately 10 to 30 minutes.

When registration is completed, the tire

pressure warning light will go off and the

inflation pressure of each tire will be dis-

played on the multi-information display.
The time elapsed before registration is

completed differs according to the driving

condition and environment.

Canceling the change wheel set mode

If turning the engine switch off when in

the change wheel set mode before driv-

ing, the change wheel set mode is can-

celed.

After driving when in the change wheel

set mode, the change wheel set mode

cannot be canceled. To cancel the mode,

perform the procedure for ID code regis-

tration again and turn the engine switch

off before driving.

If the change wheel set mode is canceled,

the ID codes that have already been reg-

istered are communicated. When com-

munication is finished, the tire pressure

warning light will turn off.

When ID code registration may not

operate properly

Do not move the vehicle backward

during registration. Registration is started

again from the beginning and it may take

longer than usual.

When another vehicle is running the side

of the vehicle such as in heavy traffic, it

may take longer to detect the vehicle’s

tire pressure warning valves and trans-

mitters.

If tire pressure warning valves and trans-

mitters are in the vehicle, the ID codes

may not be registered.

If registration takes long time, perform the
procedure for ID code registration again
after parking the vehicle for 20 minutes.
If the ID codes cannot be registered even
when performing the above procedure,
contact any authorized Lexus retailer or
Lexus authorized repairer, or any reliable
repairer.

Lexus LC Cabriolet (2021 year). Manual in english - page 16