light Lexus IS F 2010 Audio/video System / LEXUS 2010 IS F OWNERS MANUAL (OM53A21U)

423
4-3. Do-it-yourself maintenance
4
Maintenance and care
Turn bolt B the same number of
turns and in the same direction
as step 1 using a Phillips-head
screwdriver.
If the headlight cannot be
adjusted using this procedure,
take the vehicle to your Lexus
dealer to adjust the headlight
aim.
STEP2

424
4-3. Do-it-yourself maintenance
Light bulbs
Replacing light bulbs
■Back-up lights
Open the trunk door and remove
the cover clips.
You may replace the following bulbs yourself. For more information about
replacing other light bulbs, contact your Lexus dealer.
■Preparing a replacement light bulb
Check the wattage of the light bulb being replaced. (P. 4 9 9 )
■Bulb locations
Rear turn signal lightBack-up light
STEP1

425
4-3. Do-it-yourself maintenance
4
Maintenance and care
Partly remove the cover. Remove
the wire harness and turn the bulb
base counterclockwise.
Remove the light bulb.
■Rear turn signal lights
Open the trunk door and remove
the cover.
Remove the connector and turn
the bulb base counterclockwise.STEP2
STEP3
STEP1
STEP2

426
4-3. Do-it-yourself maintenance
Remove the light bulb.
■Bulbs other than the above
If any of the bulbs listed below has burnt out, have your Lexus dealer
replace it.
●Headlight low and high beams (discharge bulbs)
●Headlight high beams
●Front fog lights
●Parking lights
●Front turn signal lights
●Front side marker lights
●Stop/tail lights
●Tail lights
●Rear side marker lights
●High mounted stoplight
●License plate lightsSTEP3

427
4-3. Do-it-yourself maintenance
4
Maintenance and care
■Condensation build-up on the inside of the lens
Contact your Lexus dealer for more information in the following situations. Tempo-
rary condensation build-up on the inside of the headlight lens does not indicate a
malfunction.
●Large drops of water are built up on the inside of the lens.
●Water has built up inside the headlight.
■Discharge headlights
If voltage to the discharge bulbs is insufficient, the bulbs may not come on, or may
go out temporarily. The discharge bulbs will come on when normal power is
restored.
■LED tail lights, stop/tail lights and high mounted stoplight
The tail lights, stop/tail lights and high mounted stoplight 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.

428
4-3. Do-it-yourself maintenance
CAUTION
■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. Hold the bulb by
the plastic or metal portion.
If the bulb is scratched or dropped it may blow out or crack.
●Fully install light bulbs and any parts used to secure them. Failing to do so may
result in heat damage, fire, or water entering the headlight unit. This may damage
the headlights or cause condensation to build up on the lens.
●Do not attempt to take apart or repair the low beam headlight bulbs, connectors,
power supply circuits, or related components.
Doing so could result in electric shock and serious injury or death.
■Discharge headlights
●Contact your Lexus dealer before replacing discharge headlights (including light
bulbs).
●Do not touch the high-intensity discharge headlight’s high voltage socket when
the headlights are turned on.
An extremely high voltage of 20000 V will be discharged and could result in
serious injury or death by electric shock.
■To prevent damage or fire
Make sure bulbs are fully seated and locked.

When trouble arises5
429
5-1. Essential information
Emergency flashers.............. 430
If your vehicle needs to
be towed.................................. 431
If you think something
is wrong .................................. 437
Fuel pump shut off
system .................................... 438
Event data recorder .............. 4395-2. Steps to take in an
emergency
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............... 465
If the engine will not start ..... 474
If the shift lever cannot be
shifted from P ........................ 475
If you lose your keys ............... 476
If the electronic key does
not operate properly........... 477
If the vehicle battery is
discharged ............................ 480
If your vehicle overheats ..... 483
If the vehicle becomes
stuck........................................ 486
If your vehicle has to
be stopped in an
emergency ............................ 487

430
5-1. Essential information
Emergency flashers
NOTICE
■To prevent battery discharge
Do not leave the emergency flashers on longer than necessary when the engine is
not running.
Use the emergency flashers if the vehicle malfunctions or is involved in an
accident.
Press the switch to flash all the
turn signal lights. To turn them
off, press the switch once again.

5
When trouble arises
441
5-2. Steps to take in an emergency
If a warning light turns on or a warning buzzer sounds...
Stop the vehicle immediately. Continuing to drive the vehicle may be dangerous.
The following warning indicates a possible problem in the brake system.
Immediately stop the vehicle in a safe place and contact your Lexus
dealer.
*: Parking brake engaged warning buzzer:
P. 4 5 5
Warning lightWarning light/Details
(U.S.A.)

(Canada)
Brake system warning light (warning buzzer)*
•Low brake fluid
• Malfunction in the brake booster system
This light also comes on when the parking brake is not
released. If the light turns off after the parking brake is fully
released the system is operating normally.
Calmly perform the following actions if any of the warning lights turn on or
flash. If a light turns on or flashes, but then turns off, this does not necessar-
ily indicate a malfunction in the system.

442
5-2. Steps to take in an emergency
Stop the vehicle immediately.
The following warning indicates the possibility of damage to the vehicle
that may lead to an accident. Immediately stop the vehicle in a safe place
and contact your Lexus dealer.
Have the vehicle inspected by your Lexus dealer immediately.
Failing to investigate the cause of the following warnings may lead to the
system operating abnormally and possibly cause an accident. Have the
vehicle inspected by your Lexus dealer immediately.
Warning lightWarning light/Details
Charging system warning light
Indicates a malfunction in the vehicle’s charging system.
Warning lightWarning light/Details
(U.S.A.)

(Canada)
Malfunction indicator lamp
Indicates a malfunction in:
• The electronic engine control system;
• The electronic throttle control system; or
• The electronic automatic transmission control system.
SRS warning light
Indicates a malfunction in:
• The SRS airbag system; or
• The seat belt pretensioner system.