LEXUS RC300, RC350 (2019 year). Instruction

267

6-3. Do-it-yourself maintenance

RC350AWD_RC350_RC300AWD_RC30

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Turn the engine switch off.

Open the fuse box cover.



Engine compartment: type A fuse
box

Push the tab in and lift the lid off.



Engine compartment: type B fuse
box

Push the tab in and lift the lid off.



Left side instrument panel

Remove the lid.

Remove the fuse with the pullout
tool.

Only type A fuses can be removed using

the pullout tool.

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 your Lexus dealer.



Type A

Normal fuse
Blown fuse

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

A
B

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6-3. Do-it-yourself maintenance

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

Type B

Normal fuse
Blown fuse



Type C

Normal fuse
Blown fuse



Type D

Normal fuse
Blown fuse

■

After a fuse is replaced

●

If the lights do not turn on even after the

fuse has been replaced, a bulb may need

replacement.

●

If the replaced fuse blows again, have the

vehicle inspected by your Lexus dealer.

■

If there is an overload in a circuit

The fuses are designed to blow, protecting

the wiring harness from damage.

■

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

WARNING

■

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.

●

Never use a fuse of a higher amperage

rating than that indicated, or use any

other object in place of a fuse.

●

Always use a genuine Lexus fuse or

equivalent.

Never replace a fuse with a wire, even

as a temporary fix.

●

Do not modify the fuses or fuse boxes.

NOTICE

■

Before replacing fuses

Have the cause of electrical overload

determined and repaired by your Lexus

dealer as soon as possible.

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6-3. Do-it-yourself maintenance

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Adjustment bolt A
Adjustment bolt B

 Make sure the vehicle has a full tank

of gasoline and the area around the
headlight is not deformed.

 Park the vehicle on level ground.
 Make sure the tire inflation pressure

is at the specified level.

 Have someone sit in the driver’s

seat.

 Bounce the vehicle several times.

Using a Phillips-head screwdriver,
turn bolt A in either direction.

Remember the turning direction and the

number of turns.

Turn bolt B the same number of
turns and in the same direction as
step

If the headlight cannot be adjusted using

this procedure, take the vehicle to your

Lexus dealer to adjust the headlight aim.

Headlight aim

Vertical movement adjusting
bolts

Before checking the headlight
aim

Adjusting the headlight aim

A
B

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6-3. Do-it-yourself maintenance

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Check the wattage of the light bulb to
be replaced. (

P.326)

Rear turn signal light

■

Bulbs that need to be replaced by
your Lexus dealer

 Headlights
 Parking lights and daytime running

lights

 Front turn signal lights
 Cornering lights
 Side marker lights

 Side turn signal lights
 Stop/tail lights
 Back-up light
 High mounted stoplight
 License plate lights

■

LED light bulbs

The lights other than the rear turn signal

lights each consist of a number of LEDs. If

any of the LEDs burn out, take your vehicle

to your Lexus dealer to have the light

replaced.

■

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 your Lexus

dealer for more information in the following

situations:

●

Large drops of water have built up on the

inside of the lens.

●

Water has built up inside the headlight.

■

When replacing light bulbs

P.268

■

Rear turn signal lights

Open the trunk and apply protec-
tive tape to the peripheral of the
taillight and the vehicle body
around the taillight.

Use masking tape, etc. Do not use duct

tape, as it may leave residue or damage the

Light bulbs

You may replace the following bulbs
by yourself. The difficulty level of
replacement varies depending on
the bulb. If necessary bulb replace-
ment seems difficult to perform,
contact your Lexus dealer.

For more information about replac-
ing other light bulbs, contact your
Lexus dealer.

Preparing for light bulb replace-
ment

Bulb locations

Replacing light bulbs

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6-3. Do-it-yourself maintenance

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paint when removed.

Using a flathead screwdriver,
remove the cover.

To prevent scratching the vehicle, wrap the

tip of the flathead screwdriver with a cloth,

etc.

Remove the 2 screws.

Pull the light unit toward the rear of
the vehicle to remove it.

Turn the bulb base counterclock-
wise.

Remove the light bulb.

Install a new light bulb then install
the bulb base to the light unit by
inserting it and turning the bulb
base clockwise.

After installing the light bulb, turn on the

rear turn signal light to visually check that

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6-3. Do-it-yourself maintenance

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there is no light leaking from the bulb base.

Align the tabs and push the light
unit toward the front of the vehicle
to install it.

Install the 2 screws and cover.

Remove the protective tape.

WARNING

■

Replacing light bulbs

●

Turn off the lights. Do not attempt to

replace the bulb immediately after

turning off the lights. The bulbs

become very hot and may cause

burns.

●

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.

●

Fully install light bulbs and any parts

used to secure them. Failure to do so

may result in heat damage, fire, or

water entering the light unit. This may

damage the lights or cause condensa-

tion to build up on the lens.

■

To prevent damage or fire

●

Make sure bulbs are fully seated and

locked.

●

Check the wattage of the bulb before

installing to prevent heat damage.

273

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When trouble

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When trouble arises

7-1. Essential information

Emergency flashers..................

274

If your vehicle has to be stopped in

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

274

If the vehicle is trapped in rising

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

275

7-2. Steps to take in an emergency

If your vehicle needs to be towed.

277

If you think something is wrong

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

280

Fuel pump shut off system ......

281

If a warning light turns on or a

warning buzzer sounds .......

282

If a warning message is displayed

290

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

294

If the engine will not start ........

301

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

303

If the fuel filler door cannot be

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

303

If the electronic key does not

operate properly ....................

304

If the vehicle battery is discharged

306

If your vehicle overheats ........

309

If the vehicle becomes stuck

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

313

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7-1. Essential information

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7-1.Essential information

Press the switch to flash all of the turn
signal lights.

To turn them off, press the switch once
again.

■

Emergency flashers

If the emergency flashers are used for a

long time while the engine is not operating,

the battery may discharge.

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.

Shift the shift lever to N.



If the shift lever is shifted to N

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

Stop the engine.



If the shift lever cannot be shifted to
N

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

To stop the engine, press and hold
the engine switch for 2 consecutive

Emergency flashers

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

Operating instructions

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

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7-1. Essential information

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

Stop the vehicle in a safe place by
the road.

 Remove the seat belt first.
 If the door can be opened, open the

door and exit the vehicle.

 If the door can not be opened, open

the window using the power window
switch and exit the vehicle through
the window.

 If the window can not be opened

using the power window switch,
remain calm, wait until the water
level inside the vehicle rises to the
point that the water pressure inside
of the vehicle equals the water pres-
sure outside of the vehicle, and then
open the door and exit the vehicle.

WARNING

■

If the engine has to be turned off while

driving

Power assist for the brakes and steering

wheel will be lost, making the brake

pedal harder to depress and the steering

wheel heavier to turn. Decelerate as

much as possible before turning off the

engine.

If the vehicle is trapped in
rising water

In the event the vehicle is sub-
merged in water, remain calm and
perform the following.

WARNING

■

Using an emergency hammer

for

emergency escape

The front side windows and rear window

of this vehicle can be shattered by an
emergency hammer

used for emer-

gency escape. However, an emergency
hammer

can not shatter the windshield

as it is laminated glass.

: Contact your Lexus dealer or after-

market accessory manufacturerfor
further information about an emer-
gency hammer.

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7-1. Essential information

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WARNING

■

Escaping the vehicle from the window

There are cases where escaping the

vehicle from the window is not possible

due to seating position, passenger body

type, etc.

When using an emergency hammer,

consider your seat location and the size

of the window opening to ensure that the

opening is accessible and large enough

to escape.

277

7-2. Steps to take in an emergency

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7-2.Steps to take in an emergency

If your vehicle needs to be
towed

If towing is necessary, we recom-
mend having your vehicle towed by
your Lexus dealer or commercial
towing service, using a wheel-lift
type truck or flatbed truck.

Use a safety chain system for all
towing, and abide by all state/pro-
vincial and local laws.

WARNING

Observe the following precautions.

Failure to do so may result in death or

serious injury.

■

When towing the vehicle



2WD models

Be sure to transport the vehicle with all

four wheels raised off the ground. If the

vehicle is towed with the tires contacting

the ground, the drivetrain and related

parts may be damaged or an accident

may occur due to a change in direction

of the vehicle.



AWD models

Be sure to transport the vehicle with all

four wheels raised off the ground. If the

vehicle is towed with the tires contacting

the ground, the drivetrain or related

parts may be damaged, the vehicle may

fly off the truck.

■

While towing

●

When towing using cables or chains,

avoid sudden starts, etc. which place

excessive stress on the towing eyelets,

cables or chains. The towing eyelets,

cables or chains may become dam-

aged, broken debris may hit people,

and cause serious damage.

●

Do not turn the engine switch off.

There is a possibility that the steering

wheel is locked and cannot be oper-

ated.

■

Installing towing eyelets to the vehi-

cle

Make sure that towing eyelets are

installed securely.

If not securely installed, towing eyelets

may come loose during towing.

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7-2. Steps to take in an emergency

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The following may indicate a problem
with your transmission. Contact your
Lexus dealer or commercial towing
service before towing.
 The engine is running but the vehi-

cle does not move.

 The vehicle makes an abnormal

sound.

Do not tow with a sling-type truck to
prevent body damage.



From the front

Use a towing dolly under the rear
wheels.



From the rear

Use a towing dolly under the front
wheels.

If your vehicle is transported by a flat-

NOTICE

■

To prevent damage to the vehicle

when towing using a wheel-lift type

truck

●

Do not tow the vehicle from the rear

when the engine switch is off. The

steering lock mechanism is not strong

enough to hold the front wheels

straight.

●

When raising the vehicle, ensure ade-

quate ground clearance for towing at

the opposite end of the raised vehicle.

Without adequate clearance, the vehi-

cle could be damaged while being

towed.

■

To prevent damage to the vehicle

when towing with a sling-type truck

Do not tow with a sling-type truck, either

from the front or rear.

■

To prevent damage to the vehicle

during emergency towing

Do not secure cables or chains to the

suspension components.

Situations when it is necessary to
contact dealers before towing

Towing with a sling-type truck

Towing with a wheel-lift type
truck

Using a flatbed truck

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7-2. Steps to take in an emergency

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When trouble

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bed truck, it should be tied down at the
locations shown in the illustration.

If you use chains or cables to tie down
your vehicle, the angles shaded in
black must be 45°.
Do not overly tighten the tie downs or
the vehicle may be damaged.

If a tow truck is not available in an
emergency, your vehicle may be tem-
porarily towed using cables or chains
secured to the emergency towing eye-
lets. This should only be attempted on
hard surfaced roads for at most 50
miles (80 km) at under 18 mph (30
km/h).
A driver must be in the vehicle to steer
and operate the brakes. The vehicle’s
wheels, drive train, axles, steering and
brakes must be in good condition.

Take out the towing eyelet.
(

P.294)

Remove the eyelet cover using a
flathead screwdriver.

To protect the bodywork, place a rag

between the screwdriver and the vehicle

body as shown in the illustration.

 Except F SPORT models

 F SPORT models

Insert the towing eyelet into the
hole and tighten partially by hand.

Emergency towing

Emergency towing procedure

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7-2. Steps to take in an emergency

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Tighten down the towing eyelet
securely using a wheel nut wrench
or hard metal bar.

Securely attach cables or chains to
the towing eyelet.
Take care not to damage the vehi-
cle body.

Enter the vehicle being towed and
start the engine.
If the engine does not start, turn the
engine switch to IGNITION ON
mode.

Shift the shift lever to N and release
the parking brake.
When the shift lever cannot be
shifted:

P.129

■

While towing

If the engine is not running, the power assist

for the brakes and steering will not function,

making steering and braking more difficult.

■

Wheel nut wrench

Wheel nut wrench is installed in trunk.

(

P.294)

 Fluid leaks under the vehicle.

(Water dripping from the air condi-
tioning after use is normal.)

 Flat-looking tires or uneven tire

wear

 Engine coolant temperature gauge

continually points higher than nor-
mal.

 Changes in exhaust sound
 Excessive tire squeal when corner-

ing

 Strange noises related to the sus-

pension system

 Pinging or other noises related to

the engine

 Engine missing, stumbling or run-

ning roughly

 Appreciable loss of power
 Vehicle pulls heavily to one side

when braking

If you think something is
wrong

If you notice any of the following
symptoms, your vehicle probably
needs adjustment or repair. Con-
tact your Lexus dealer as soon as
possible.

Visible symptoms

Audible symptoms

Operational symptoms

LEXUS RC300, RC350 (2019 year). Instruction - part 17