Lexus LC (2021 year). Manual in english - page 20

417

6

6-3. Do-it-yourself maintenance

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Q

Effects of incorrect tire inflation pres-

sure

Driving with incorrect tire inflation pressure 

may result in the following:

O

Reduced fuel economy

O

Reduced driving comfort and poor han-

dling

O

Reduced tire life due to wear

O

Reduced safety

O

Damage to the drivetrain

If a tire needs frequent inflating, have it 

checked by any authorized Lexus retailer or 

Lexus authorized repairer, or any reliable 

repairer.

Q

Instructions for checking tire inflation 

pressure

When checking tire inflation pressure, 

observe the following:

O

Check only when the tires are cold.

If your vehicle has been parked for at 

least 3 hours or has not been driven for 

more than 1.5 km or 1 mile, you will get an 

accurate cold tire inflation pressure read-

ing.

O

Always use a tire pressure gauge.

It is difficult to judge if a tire is properly 

inflated based only on its appearance.

O

It is normal for the tire inflation pressure 

to be higher after driving as heat is gen-

erated in the tire. Do not reduce tire infla-

tion pressure after driving.

O

Passengers and luggage weight should 

be placed so that the vehicle is balanced.

WARNING

Q

When installing the tire

Failure to follow these precautions could 

cause the wheel nuts to loosen and the 

tire to fall off, resulting in death or serious 

injury.

O

Never use oil or grease on the wheel 

bolts or wheel nuts.

Oil and grease may cause the wheel 

nuts to be excessively tightened, lead-

ing 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.

O

Have the wheel nuts tightened with a 

torque wrench to 140 N•m (14.3 

kgf•m, 103.3 ft•lbf) as soon as possible 

after changing wheels.

O

Do not attach a heavily damaged 

wheel ornament, as it may fly off the 

wheel while the vehicle is moving.

O

When installing a tire, only use wheel 

nuts that have been specifically 

designed for that wheel.

O

If there are any cracks or deformations 

in the bolt screws, nut threads or bolt 

holes of the wheel, have the vehicle 

inspected by any authorized Lexus 

retailer or Lexus authorized repairer, 

or any reliable repairer.

Q

After using the tools

Before driving, make sure all the tools are 

stored securely in place. Failure to do so 

may cause injury in case of a collision or 

sudden braking.

NOTICE

Q

Repairing or replacing tires, wheels, 

tire pressure warning valves, trans-

mitters and tire valve caps



P.408

Tire inflation pressure

Make sure to maintain proper tire 
inflation pressure. Tire inflation 
pressure should be checked at least 
once per month. However, Lexus 
recommends that tire inflation 
pressure be checked once every 
two weeks.

418

6-3. Do-it-yourself maintenance

When replacing wheels, care should 
be taken to ensure that they are equiv-
alent to those removed in load capac-
ity, diameter, rim width and inset

*

.

Replacement wheels are available at 
any authorized Lexus retailer or Lexus 
authorized repairer, or any reliable 
repairer.

*

: Conventionally referred to as offset.

Lexus does not recommend using the 
following:



Wheels of different sizes or types



Used wheels



Bent wheels that have been straight-
ened

Q

When replacing wheels

The wheels of your vehicle are equipped 

with tire pressure warning valves and trans-

mitters that allow the tire pressure warning 

system to provide advance warning in the 

event of a loss in tire inflation pressure. 

Whenever wheels are replaced, tire pres-

sure warning valves and transmitters must 

be installed. (



P.408)

WARNING

Q

Proper inflation is critical to save tire 

performance

Keep your tires properly inflated. 

If the tires are not properly inflated, the 

following conditions may occur which 

could lead to an accident resulting in 

death or serious injury:

O

Excessive wear

O

Uneven wear

O

Poor handling

O

Possibility of blowouts resulting from 

overheated tires

O

Air leaking from between tire and 

wheel

O

Wheel deformation and/or tire dam-

age

O

Greater possibility of tire damage 

while driving (due to road hazards, 

expansion joints, sharp edges in the 

road, etc.)

NOTICE

Q

When inspecting and adjusting tire 

inflation pressure

Be sure to put the tire valve caps back on.

If a valve cap is not installed, dirt or mois-

ture may get into the valve and cause an 

air leak, resulting in decreased tire infla-

tion pressure.

Wheels

If a wheel is bent, cracked or heavily 
corroded, it should be replaced. 
Otherwise, the tire may separate 
from the wheel or cause a loss of 
handling control.

Wheel selection

419

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6-3. Do-it-yourself maintenance

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

Use only Lexus wheel nuts and 
wrenches designed for use with 
your aluminum wheels.



When rotating, repairing or chang-

ing your tires, check that the wheel 
nuts are still tight after driving 1600 
km (1000 miles).



Be careful not to damage the alumi-
num wheels when using tire chains.



Use only Lexus genuine balance 
weights or equivalent and a plastic 
or rubber hammer when balancing 
your wheels.

WARNING

Q

When replacing wheels

O

Do not use wheels that are a different 

size from those recommended in the 

Owner’s Manual, as this may result in a 

loss of handling control.

O

Never use an inner tube in a leaking 

wheel which is designed for a tubeless 

tire. Doing so may result in an acci-

dent, causing death or serious injury.

Q

Use of defective wheels prohibited

Do not use cracked or deformed wheels.
Doing so could cause the tire to leak air 

during driving, possibly causing an acci-

dent.

NOTICE

Q

Replacing tire pressure warning 

valves and transmitters

O

Because tire repair or replacement 

may affect the tire pressure warning 

valves and transmitters, make sure to 

have tires serviced by any authorized 

Lexus retailer or Lexus authorized 

repairer, or any reliable repairer or 

other qualified service shop. In addi-

tion, make sure to purchase your tire 

pressure warning valves and transmit-

ters at any authorized Lexus retailer or 

Lexus authorized repairer, or any reli-

able repairer.

O

Ensure that only genuine Lexus wheels 

are used on your vehicle.

Tire pressure warning valves and trans-

mitters may not work properly with 

non-genuine wheels.

Aluminum wheel precautions

420

6-3. Do-it-yourself maintenance

1

Turn the engine switch <power 
switch> off.

2

Open the glove box.

3

Remove the panel.

4

Unlock the filter cover (

), pull 

the filter cover out of the claws 
(

), and remove the filter cover.

5

Remove the filter case.

6

Remove the air conditioning filter 
from the filter case and replace it 
with a new one.

The “

UP” marks shown on the filter and 

the filter case should be pointing up.

Q

Checking interval

Inspect and replace the air conditioning fil-

ter according to the maintenance schedule. 

In dusty areas or areas with heavy traffic 

flow, early replacement may be required. 

(For scheduled maintenance information, 

please refer to the “Lexus Service Booklet” 

or “Lexus Warranty Booklet”.)

Q

If air flow from the vents decreases dra-

matically

The filter may be clogged. Check the filter 

and replace if necessary.

Q

Air conditioning filter with deodorizing 

function

When fragrances are placed in your vehi-

cle, the deodorizing effect may become 

significantly weakened in a short period.

Air conditioning filter

The air conditioning filter must be 
changed regularly to maintain air 
conditioning efficiency.

Removing the air conditioning 
filter

A

B

421

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6-3. Do-it-yourself maintenance

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When an air conditioning odor comes out 

continuously, replace the air conditioning 

filter.

Q

If the electronic key battery is depleted

The following symptoms may occur:

O

The smart entry & start system and wire-

less remote control will not function 

properly.

O

The operational range will be reduced.

Q

When the card key battery needs to be 

replaced (if equipped)

The battery for the card key is available only 

at Lexus dealers. Your Lexus dealer can 

replace the battery for you.

Prepare the following before replacing 
the battery:



Flathead screwdriver



Small flathead screwdriver



Lithium battery CR2032

Q

Use a CR2032 lithium battery

O

Batteries can be purchased at any autho-

rized Lexus retailer or Lexus authorized 

repairer, or any reliable repairer, local 

electrical appliance shops or camera 

stores.

O

Replace only with the same or equivalent 

type recommended by the manufacturer.

O

Dispose of used batteries according to 

the local laws.

NOTICE

Q

When using the air conditioning sys-

tem

Make sure that a filter is always installed.

Using the air conditioning system without 

a filter may cause damage to the system.

Q

To prevent damage to the filter cover

When moving the filter cover in the 

direction of arrow to release the fitting, 

pay attention not to apply excessive force 

to the claws. Otherwise, the claws may 

be damaged.

Electronic key battery

Replace the battery with a new one 
if it is depleted.

Items to prepare

422

6-3. Do-it-yourself maintenance

1

Take out the mechanical key.

2

Remove the cover.

To prevent damage to the key, wrap the tip 

of the screwdriver with tape.

3

Remove the depleted battery using 
a small flathead screwdriver.

Insert a new battery with the “+” terminal 

facing up.

Replacing the battery

WARNING

Q

Removed battery and other parts

These parts are small and if swallowed by 

a child, they can cause choking. Keep 

away from children. Failure to do so 

could result in death or serious injury.

Q

Certification for the electronic key 

battery

CAUTION

RISK OF EXPLOSION IF BATTERY IS 

REPLACED BY AN INCORRECT 

TYPE. 

DISPOSE OF USED BATTERIES 

ACCORDING TO THE 

INSTRUCTIONS

NOTICE

Q

When replacing the battery

Use a screwdriver of appropriate size. 

Applying excessive force may deform or 

damage the cover.

Q

For normal operation after replacing 

the battery

Observe the following precautions to 

prevent accidents:

O

Always work with dry hands.

Moisture may cause the battery to 

rust.

O

Do not touch or move any other com-

ponent inside the remote control.

O

Do not bend either of the battery ter-

minals.

423

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6-3. Do-it-yourself maintenance

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1

Turn the engine switch <power 
switch> off.

2

Open the fuse box cover.



Engine compartment: type A fuse 
box (LC500)

Left-hand drive vehicles:
Push the tab in and lift the lid off.

Right-hand drive vehicles:
Push the tab in and lift the lid off.



Engine compartment: type B fuse 
box (LC500h)

Left-hand drive vehicles:
Push the tab in and lift the lid off.

Right-hand drive vehicles:
Push the tab in and lift the lid off.



Engine compartment: type C fuse 
box (LC500h)

Push the tab in and lift the lid off.



Trunk

Remove the luggage mat.

Checking and replacing 
fuses

If any of the electrical components 
do not operate, a fuse may have 
blown. If this happens, check and 
replace the fuses as necessary.

Checking and replacing fuses

424

6-3. Do-it-yourself maintenance

Push the tab in and lift the lid off.



Driver’s side instrument panel

Left-hand drive vehicles:
Push the tab in and remove the lid.
Make sure to push the tab in during 
removal or installation.

Right-hand drive vehicles:
Push the tab in and remove the lid.

Make sure to push the tab in during 
removal or installation.



Front passenger’s side instrument 
panel

Left-hand drive vehicles:
Remove the cover, and then remove the 
footwell light connector.

Push the tab in and remove the lid.
Make sure to push the tab in during 
removal or installation.

425

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6-3. Do-it-yourself maintenance

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Right-hand drive vehicles:
Remove the cover, and then remove the 
footwell light connector.

Push the tab in and remove the lid.
Make sure to push the tab in during 
removal or installation.

3

Remove the fuse with the pullout 
tool.

Only type A fuses can be removed using 

the pullout tool.



LC500



LC500h

4

Check if the fuse is blown.

Type A and B:

Replace the blown fuse with a new fuse of 

an appropriate amperage rating. The 

amperage rating can be found on the fuse 

box lid.
Type C and D:

Contact any authorized Lexus retailer or 

426

6-3. Do-it-yourself maintenance

Lexus authorized repairer, or any reliable 

repairer.



Type A

Normal fuse

Blown fuse



Type B

Normal fuse

Blown fuse



Type C

Normal fuse

Blown fuse



Type D

Normal fuse

Blown fuse

Q

After a fuse is replaced

O

When installing the lid, make sure that the 

tab is installed securely.

O

If the lights do not turn on even after the 

fuse has been replaced, a bulb may need 

replacement. (



P.427)

O

If the replaced fuse blows again, have the 

vehicle inspected by any authorized 

Lexus retailer or Lexus authorized 

repairer, or any reliable repairer.

Q

If there is an overload in a circuit

The fuses are designed to blow, protecting 

the wiring harness from damage.

Q

When replacing light bulbs

Lexus recommends that you use genuine 

Lexus products designed for this vehicle. 

Because certain bulbs are connected to cir-

cuits designed to prevent overload, non-

genuine parts or parts not designed for this 

vehicle may be unusable.

A
B

A
B

A

WARNING

Q

To prevent system breakdowns and 

vehicle fire

Observe the following precautions.

Failure to do so may cause damage to 

the vehicle, and possibly a fire or injury.

B

A
B

427

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6-3. Do-it-yourself maintenance

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Rear fog light

Q

Bulbs that need to be replaced by 
any authorized Lexus retailer or 
Lexus authorized repairer, or any 
reliable repairer



Headlights



Front position lights and daytime 
running lights



Front turn signal lights



Cornering lights

WARNING

O

Never use a fuse of a higher amperage 

rating than that indicated, or use any 

other object in place of a fuse.

O

Always use a genuine Lexus fuse or 

equivalent.

Never replace a fuse with a wire, even 

as a temporary fix.

O

Do not modify the fuses or fuse boxes.

NOTICE

Q

Before replacing fuses

Have the cause of electrical overload 

determined and repaired by any autho-

rized Lexus retailer or Lexus authorized 

repairer, or any reliable repairer as soon 

as possible.

Light bulbs

You may replace the following bulbs 
by yourself. Before replacing, 
check the wattage of the light bulb 
to be replaced. As there is a danger 
that components may be damaged, 
we recommend that replacement is 
carried out by any authorized Lexus 
retailer or Lexus authorized 
repairer, or any reliable repairer.

Bulb location

A

428

6-3. Do-it-yourself maintenance



Side turn signal lights



Tail lights



Stop lights



Rear turn signal lights



Back-up lights



High mounted stoplight



License plate lights

Q

LED lights

The lights other than the rear fog light each 

consist of a number of LEDs. If any of the 

LEDs burn out, take your vehicle to any 

authorized Lexus retailer or Lexus autho-

rized repairer, or any reliable repairer to 

have the light replaced.

Q

Condensation build-up on the inside of 

the lens

Temporary condensation build-up on the 

inside of the headlight lens does not indi-

cate a malfunction. Contact any authorized 

Lexus retailer or Lexus authorized repairer, 

or any reliable repairer for more informa-

tion in the following situations:

O

Large drops of water have built up on the 

inside of the lens.

O

Water has built up inside the headlight.

Q

When replacing light bulbs



P.426

Q

Rear fog light

1

Disconnect the connector.

2

Turn the bulb base counterclock-
wise.

3

Remove the light bulb.

4

Install a new light bulb then install 
the bulb base to the light unit by 

Replacing light bulb

429

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6-3. Do-it-yourself maintenance

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inserting it and turning the bulb 
base clockwise.

5

Reconnect the connector.

After reconnecting the connector, turn on 

the rear fog light to visually check that 

there is no light leaking from the bulb base.

WARNING

Q

Replacing light bulb

O

Turn off the light. Do not attempt to 

replace the bulb immediately after 

turning off the light. 

The bulb become very hot and may 

cause burns.

O

Do not touch the glass portion of the 

light bulb with bare hands. When it is 

unavoidable to hold the glass portion, 

use and hold with a clean dry cloth to 

avoid getting moisture and oils on the 

bulb. 

Also, if the bulb is scratched or 

dropped, it may blow out or crack.

O

Fully install light bulb and any parts 

used to secure it. Failure to do so may 

result in heat damage, fire, or water 

entering the light unit. This may dam-

age the light or cause condensation to 

build up on the lens.

Q

To prevent damage or fire

O

Make sure bulb is fully seated and 

locked.

O

Check the wattage of the bulb before 

installing to prevent heat damage.

7

431

7

Wh
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 troubl
e ar
ises

When trouble arises

7-1. Essential information

Emergency flashers .................

432

If your vehicle has to be stopped in 

an emergency..........................

433

If the vehicle is trapped in rising 

water............................................

434

7-2. Steps to take in an emergency

If your vehicle needs to be towed

........................................................

435

If you think something is wrong

........................................................

439

Fuel pump shut off system 

(LC500) ...................................

440

If a warning light turns on or a 

warning buzzer sounds ........

441

If a warning message is displayed

.........................................................

451

If you have a flat tire..................

457

If the engine will not start 

(LC500) ...................................

458

If the hybrid system will not start 

(LC500h).................................

459

If you lose your keys..................

461

If the fuel filler door cannot be 

opened ........................................

461

If the electronic key does not 

operate properly ....................

462

If the 12-volt battery is discharged

........................................................

465

If your vehicle overheats 

(LC500) ...................................

474

If your vehicle overheats 

(LC500h).................................

476

If the vehicle becomes stuck

480

432

7-1. Essential information

7-1.Essential information

Press the switch to flash all of the turn 
signal lights.
To turn them off, press the switch once 
again.

Q

Emergency flashers

O

LC500: If the emergency flashers are 

used for a long time while the engine is 

not running, the 12-volt battery may dis-

charge. 

LC500h: If the emergency flashers are 

used for a long time while the hybrid sys-

tem is not operating (while the “READY” 

indicator is not illuminated), the 12-volt 

battery may discharge.

O

If any of the SRS airbags deploy (inflate) 

or in the event of a strong rear impact, the 

emergency flashers will turn on automati-

cally. The emergency flashers will turn off 

automatically after operating for approxi-

mately 20 minutes. To manually turn the 

emergency flashers off, press the switch 

twice. (The emergency flashers may not 

turn on automatically depending on the 

force of the impact and conditions of the 

collision.) 

Emergency flashers

The emergency flashers are used to 
warn other drivers when the vehicle 
has to be stopped in the road due to 
a breakdown, etc.

Operating instructions

433

7

7-1. Essential information

Wh
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ises

1

Steadily step on the brake pedal 
with both feet and firmly depress it.

Do not pump the brake pedal repeatedly 

as this will increase the effort required to 

slow the vehicle.

2

Shift the shift position to N.



If the shift position is shifted to N

3

After slowing down, stop the vehi-
cle in a safe place by the road.

4

Stop the engine <hybrid system>.



If the shift position cannot be shifted 
to N

3

Keep depressing the brake pedal 
with both feet to reduce vehicle 
speed as much as possible.

4

To stop the engine <hybrid system>, 
press and hold the engine switch 
<power switch> for 2 consecutive 

seconds or more, or press it briefly 
3 times or more in succession.

5

Stop the vehicle in a safe place by 
the road.

If your vehicle has to be 
stopped in an emergency

Only in an emergency, such as if it 
becomes impossible to stop the 
vehicle in the normal way, stop the 
vehicle using the following proce-
dure:

Stopping the vehicle

WARNING

Q

If the engine <hybrid system> has to 

be turned off while driving

Power assist for the steering wheel will 

be lost, making the steering wheel 

heavier to turn. Decelerate as much as 

possible before turning off the engine 

<hybrid system>.