LEXUS RC300, RC350 (2019 year). Instruction — part 16

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6-3. Do-it-yourself maintenance

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on the reservoir when the engine is
cold.

■

Engine coolant reservoir



RC350/RC300 AWD



RC300

Reservoir cap
“FULL” line
“LOW” line

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

P.309)

■

Intercooler coolant reservoir
(RC300)

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

Reservoir cap
“F” line
“L” line

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

P.309)

■

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.
U.S.A.:

“Toyota Super Long Life Coolant” is a mix-

ture of 50% coolant and 50% deionized

water. (Minimum temperature: -31°F

[-35°C])
Canada:

“Toyota Super Long Life Coolant” is a mix-

ture of 55% coolant and 45% deionized

water. (Minimum temperature: -44°F

[-42°C])
For more details about coolant, contact

your Lexus dealer.

■

If the coolant level drops within a short

time of replenishing

Visually check the radiator, hoses, engine

and intercooler coolant reservoir caps,

drain cock and water pump.
If you cannot find a leak, have your Lexus

dealer test the cap and check for leaks in

the cooling system.

A
B
C

A
B
C

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

■

Checking fluid level

The brake fluid level should be
between the “MAX” and “MIN” lines
on the tank.



RC350/RC300 AWD



RC300

■

Adding fluid

Make sure to check the fluid type and
prepare the necessary item.
 Fluid type

SAE J1703 or FMVSS No.116 DOT 3
brake fluid
SAE J1704 or FMVSS No.116 DOT 4
brake fluid

 Item

Clean funnel

WARNING

■

When the engine is hot

Do not remove the engine coolant reser-

voir cap, intercooler coolant reservoir

cap and coolant inlet cap. (

P.312)

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, con-
denser and intercooler radiator
(if equipped)

WARNING

■

When the engine is hot

Do not touch the radiator, condenser or

intercooler radiator as they may be hot

and cause serious injuries, such as burns.

Checking and adding the brake
fluid

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Brake fluid can absorb moisture from

the air

Excess moisture in the brake fluid can cause

a dangerous loss of braking efficiency. Use

only newly opened brake fluid.

Check the battery as follows.

■

Battery exterior

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

Terminals
Hold-down clamp

■

Before recharging

When recharging, the battery produces

hydrogen gas which is flammable and

explosive. Therefore, observe the following

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

The engine may not start. Follow the proce-

dure below to initialize the system.

1

Shift the shift lever to P.

2

Open and close either door.

3

Restart the engine.

●

Unlocking the doors using the smart

access system with push-button start may

not be possible immediately after recon-

necting the battery. 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

ACCESSORY mode. The engine may

not start with the engine switch turned off.

However, the engine will operate nor-

mally from the second attempt.

●

The engine switch mode is recorded by

the vehicle. If the battery is disconnected

and reconnected, the vehicle will return

the engine switch mode to the status it

was in before the battery was discon-

nected. Make sure to turn off the engine

before disconnecting the battery. Take

extra care when connecting the battery if

the engine switch mode prior to the bat-

tery being disconnected is unknown.

If the system will not start even after multi-

ple attempts, contact your Lexus dealer.

WARNING

■

When filling the reservoir

Take care as brake fluid can harm your

hands and eyes and damage painted sur-

faces.If fluid gets on your hands or in your

eyes, flush the affected area with clean

water immediately.
If you still experience discomfort, see a

doctor.

NOTICE

■

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 out

or when the fluid level in the accumulator

is high.
If the reservoir needs frequent refilling,

there may be a serious problem.

Battery

A
B

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If any washer does not work or the
warning message appears on the
multi-information display, the washer
tank may be empty. Add washer fluid.



RC350/RC300 AWD

WARNING

■

Chemicals in the battery

Batteries contain poisonous and corro-

sive 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

Only perform a slow charge (5 A or

less). The battery may explode if charged

at a quicker rate.

■

Emergency measures regarding

electrolyte

●

If electrolyte gets in your eyes

Flush your eyes with clean water for at

least 15 minutes and get immediate med-

ical 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 atten-

tion 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 neces-

sary.

●

If you accidentally swallow electrolyte

Drink a large quantity of water or milk.

Get emergency medical attention imme-

diately.

NOTICE

■

When recharging the battery

Never recharge the battery while the

engine is running. Also, be sure all acces-

sories are turned off.

Adding the washer fluid

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

RC300

Check if the treadwear indicators are
showing on the tires. Also check the
tires for uneven wear, such as excessive
wear on one side of the tread.
Check the spare tire condition and
pressure if not rotated.

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.

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.

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.

Tires

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

Checking tires

A
B
C

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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 your Lexus

dealer.

■

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

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 or tire chains on snowy and/or icy

roads and drive carefully at a speed appro-

priate for road and weather conditions.

■

Maximum load of tire

Check that the maximum load of the

replacement tire is greater than 1/2 of the

Gross Axle Weight Ratings (GAWR) of

either the front axle or the rear axle, which-

ever is greater.
For the GAWR, see the Certification Label.

For the maximum load of the tire, see the

load limit at maximum cold tire inflation

pressure mentioned on the sidewall of the

tire. (

P.329)

■

Tire types

●

Summer tires

Summer tires are high-speed performance
tires best suited to highway driving under
dry conditions. Since summer tires do not
have the same traction performance as
snow tires, summer tires are inadequate for
driving on snow-covered or icy roads. For
driving on snow-covered roads or icy
roads, the use of snow tires is recom-
mended. When installing snow tires, be
sure to replace all four tires.

●

All season tires

All season tires are designed to provide
better traction in snow and to be adequate
for driving in most winter conditions as well
as for use year-round. All season tires,
however, do not have adequate traction
performance compared with snow tires in
heavy or loose snow. Also, all season tires
fall short in acceleration and handling per-
formance compared with summer tires in
highway driving.

●

Snow tires

For driving on snow-covered roads or icy
roads, we recommend using snow tires. If
you need snow tires, select tires of the
same size, construction and load capacity
as the originally installed tires. Since your
vehicle has radial tires as original equip-
ment, make sure your snow tires also have
radial construction. Do not install studded
tires without first checking local regula-
tions for possible restrictions. Snow tires
should be installed on all wheels. (

P.196)

■

If the tread on snow tires wears down

below 0.16 in. (4 mm)

The effectiveness of the tires as snow tires is

lost.

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Vehicles with front and rear tires of
the same size

Rotate the tires in the order shown.

To equalize tire wear and extend tire life,
Lexus recommends that tire rotation is car-
ried out at the same interval as tire inspec-
tion.
Do not fail to initialize the tire pressure
warning system after tire rotation.



Vehicles with front and rear tires of
differing sizes

Tires cannot be rotated.

■

When rotating the tires

Make sure that the engine switch is off. If the

tires are rotated while the engine switch is in

IGNITION ON mode, the tire position

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.

●

Do not tow if your vehicle has a com-

pact spare tire installed.

NOTICE

■

Low profile 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.

■

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.

Tire rotation

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information will not be updated.

If this accidentally occurs, either turn the

engine switch to off and then to IGNITION

ON mode, or initialize the system after

checking that the tire pressure is properly

adjusted.

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.287)

 The tire pressure detected by the

tire pressure warning system can be
displayed on the multi-information
display. (

P.71)

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 tires not equipped with 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.

Tire pressure warning system

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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. Have tire pressure warn-
ing valve and transmitter ID codes reg-
istered by your Lexus dealer. (

P.261)

■

Replacing 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 20 min-

utes, the tire pressure warning light blinks

for 1 minute and stays on to indicate a sys-

tem malfunction.

WARNING

■

Caution regarding interference with

electronic devices

●

People with implantable cardiac pace-

makers, cardiac resynchronization

therapy-pacemakers or implantable

cardioverter defibrillators should not

come within 17.7 in. (450 mm) of the

tire pressure warning system initiators.

The radio waves may affect the opera-

tion of such devices.

●

Users of any electrical medical device

other than implantable cardiac pace-

makers, cardiac resynchronization

therapy-pacemakers or implantable

cardioverter defibrillators should con-

sult the manufacturer of the device for

information about its operation under

the influence of radio waves.Radio

waves could have unexpected effects

on the operation of such medical

devices.

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 your

Lexus dealer as the tire pressure warn-

ing valves and transmitters may be

damaged 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.

■

To avoid damage to the tire pressure

warning valves and transmitters

When a tire is repaired with liquid seal-

ants, the tire pressure warning valve and

transmitter may not operate properly. If a

liquid sealant is used, contact your Lexus

dealer or other qualified service shop as

soon as possible. After use of liquid seal-

ant, make sure to replace the tire pres-

sure warning valve and transmitter when

repairing or replacing the tire. (

P.259)

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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 such as when changing
traveling speed.

 When changing the tire size.
When the tire pressure warning system
is initialized, the current tire inflation
pressure is set as the benchmark pres-
sure.

■

How to initialize the tire pressure
warning system

1

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

Initialization cannot be performed while

the vehicle is moving.

2

Adjust the tire inflation pressure to
the specified cold tire inflation pres-
sure 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.

3

Turn the engine switch to IGNI-
TION ON mode.

4

Press and hold the tire pressure
warning reset switch until the tire

pressure warning light blinks slowly
3 times.

5

Wait for a few minutes with the
engine switch in IGNITION ON
mode and then turn the engine
switch off.

■

Initialization procedure

●

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.

●

If you have accidentally turned the engine

switch off during initialization, it is not

necessary to press the reset switch again

as initialization will restart automatically

when the engine switch has been turned

to IGNITION ON mode for the next

time.

●

If you accidentally press the reset switch

when initialization is not necessary, adjust

the tire inflation pressure to the specified

level when the tires are cold, and conduct

initialization again.

■

When initialization of the tire pressure

warning system has failed

Initialization can be completed in a few min-

utes. However, in the following cases, the

settings have not been recorded and the

system will not operate properly. If repeated

attempts to record tire inflation pressure

settings are unsuccessful, have the vehicle

inspected by your Lexus dealer.

●

When operating the tire pressure warn-

ing reset switch, the tire pressure warning

light does not blink 3 times.

Initializing the tire pressure
warning system

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●

After carrying out the initialization proce-

dure, the tire pressure warning light

blinks for 1 minute then stays on after

driving for 20 minutes.

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.
Have the ID code registered by your
Lexus dealer.

The recommended cold tire inflation
pressure and tire size are displayed on
the tire and loading information label.
(

P.322)

Tire valve
Tire pressure gauge

WARNING

■

When initializing the tire pressure

warning system

Do not operate the tire pressure warning

reset switch without first adjusting the tire

inflation pressure to the specified level.

Otherwise, 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 normal.

Registering ID codes

Tire inflation pressure

Checking the specified tire infla-
tion pressure

Inspection and adjustment pro-
cedure

A
B

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1

Remove the tire valve cap.

2

Press the tip of the tire pressure
gauge onto the tire valve.

3

Read the pressure using the gauge
gradations.

4

If the tire inflation pressure is not at
the recommended level, adjust the
pressure.
If you add too much air, press the
center of the valve to deflate.

5

After completing the tire inflation
pressure measurement and adjust-
ment, apply soapy water to the
valve and check for leakage.

6

Put the tire valve cap back on.

■

Tire inflation pressure check interval

You should check tire inflation pressure

every two weeks, or at least once a month.

Do not forget to check the spare.

■

Effects of incorrect tire inflation pres-

sure

Driving with incorrect tire inflation pressure

may result in the following:

●

Reduced fuel economy

●

Reduced driving comfort and poor han-

dling

●

Reduced tire life due to wear

●

Reduced safety

●

Damage to the drivetrain

If a tire needs frequent inflating, have it

checked by your Lexus dealer.

■

Instructions for checking tire inflation

pressure

When checking tire inflation pressure,

observe the following:

●

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 mile or 1.5 km, you will get an

accurate cold tire inflation pressure read-

ing.

●

Always use a tire pressure gauge.

It is difficult to judge if a tire is properly

inflated based only on its appearance.

●

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.

●

Never exceed the vehicle capacity

weight.

Passengers and luggage weight should

be placed so that the vehicle is balanced.

WARNING

■

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:

●

Excessive wear

●

Uneven wear

●

Poor handling

●

Possibility of blowouts resulting from

overheated tires

●

Air leaking from between tire and

wheel

●

Wheel deformation and/or tire dam-

age

●

Greater possibility of tire damage

while driving (due to road hazards,

expansion joints, sharp edges on the

road, etc.)

NOTICE

■

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.

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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
your Lexus dealer.

*

: 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

■

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.259)

 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 1000
miles (1600 km).

 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.

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

WARNING

■

When replacing wheels

●

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.

●

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.

NOTICE

■

Replacing tire pressure warning

valves and transmitters

●

Because tire repair or replacement

may affect the tire pressure warning

valves and transmitters, make sure to

have tires serviced by your Lexus

dealer or other qualified service shop.

In addition, make sure to purchase

your tire pressure warning valves and

transmitters at your Lexus dealer.

●

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

264

6-3. Do-it-yourself maintenance

RC350AWD_RC350_RC300AWD_RC30

0_OM_(U)_1810

1

Turn the engine switch off.

2

Open the glove box. Lift up the side
with the stay, disconnect the stay
tabs and remove the partition by
pulling horizontally.

3

Press the tabs and remove the filter
cover.

4

Press the tabs and remove the filter
case.

5

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.

■

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 “Owner’s Manual Sup-

plement” or “Scheduled Maintenance”.)

■

If air flow from the vents decreases dra-

matically

The filter may be clogged. Check the filter

and replace if necessary.

■

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

265

6-3. Do-it-yourself maintenance

RC350AWD_RC350_RC300AWD_RC30

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6

Mai
nte

na

nc

e a

nd

c

are

When an air conditioning odor comes out

continuously, replace the air conditioning

filter.

■

If the electronic key battery is depleted

The following symptoms may occur:

●

The smart access system with push-but-

ton start and wireless remote control will

not function properly.

●

The operational range will be reduced.

■

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.

 Flathead screwdriver
 Small flathead screwdriver
 Lithium battery CR2032

■

Use a CR2032 lithium battery

●

Batteries can be purchased at your Lexus

dealer, local electrical appliance shops or

camera stores.

●

Replace only with the same or equivalent

type recommended by the manufacturer.

●

Dispose of used batteries according to

local laws.

NOTICE

■

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.

Electronic key battery

Replace the battery with a new one
if it is depleted.
As the key may be damaged if the
following procedure is not per-
formed properly, it is recom-
mended that key battery
replacement be performed by your
Lexus dealer.

Items to prepare

266

6-3. Do-it-yourself maintenance

RC350AWD_RC350_RC300AWD_RC30

0_OM_(U)_1810

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.

Insert a new battery with the “+” terminal

facing up.

Replacing the battery

WARNING

■

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.

NOTICE

■

For normal operation after replacing

the battery

Observe the following precautions to

prevent accidents:

●

Always work with dry hands.Moisture

may cause the battery to rust.

●

Do not touch or move any other com-

ponent inside the remote control.

●

Do not bend either of the battery ter-

minals.