LEXUS RC300, RC350 (2019 year). Manual — part 17
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6-3. Do-it-yourself maintenance
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1
Turn the engine switch off.
2
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.
3
Remove the fuse with the pullout
tool.
Only type A fuses can be removed using
the pullout tool.
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 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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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
A
B
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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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.
1
Using a Phillips-head screwdriver,
turn bolt A in either direction.
Remember the turning direction and the
number of turns.
2
Turn bolt B the same number of
turns and in the same direction as
step
1
.
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
1
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
A
Replacing light bulbs
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paint when removed.
2
Using a flathead screwdriver,
remove the cover.
To prevent scratching the vehicle, wrap the
tip of the flathead screwdriver with a cloth,
etc.
3
Remove the 2 screws.
4
Pull the light unit toward the rear of
the vehicle to remove it.
5
Turn the bulb base counterclock-
wise.
6
Remove the light bulb.
7
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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there is no light leaking from the bulb base.
8
Align the tabs and push the light
unit toward the front of the vehicle
to install it.
9
Install the 2 screws and cover.
10
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.
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1
2
3
4
5
6
7
8
9
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7
7
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
274
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.
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 lever to N.
If the shift lever is shifted to N
3
After slowing down, stop the vehi-
cle in a safe place by the road.
4
Stop the engine.
If the shift lever 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, 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.
5
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.
278
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
279
7-2. Steps to take in an emergency
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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.
1
Take out the towing eyelet.
(
P.294)
2
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
3
Insert the towing eyelet into the
hole and tighten partially by hand.
Emergency towing
Emergency towing procedure
280
7-2. Steps to take in an emergency
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4
Tighten down the towing eyelet
securely using a wheel nut wrench
or hard metal bar.
5
Securely attach cables or chains to
the towing eyelet.
Take care not to damage the vehi-
cle body.
6
Enter the vehicle being towed and
start the engine.
If the engine does not start, turn the
engine switch to IGNITION ON
mode.
7
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
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