lights Lexus GX470 2007 Using other driving systems /

332
4-3. Do-it-yourself maintenance
Replacing light bulbs■ Headlight low and high beam
Unplug the connector while push-
ing the lock release.
Turn the bulb base counterclock-
wise to remove it.
■ Rear turn signal, stop/tail lights
Open the back door and remove
the screws.
STEP1
STEP2
STEP1

333
4-3. Do-it-yourself maintenance
4
Maintenance and care
Turn the bulb base counterclock-
wise.Turn signal light
Stop/tail lights
Remove the light bulb.
■ License plate light
Remove while pressing from the
side.
Turn the bulb base counterclock-
wise.STEP2
STEP3
STEP1
STEP2

334
4-3. Do-it-yourself maintenance
Remove the light bulbs.
■ Bulbs other than the above
If any of the bulbs listed below has burnt out, have your Lexus dealer
replace it.
●Fog lights
● Parking lights
● Front turn signal lights
● Front side marker lights
● High mounted stoplight
● Back-up lightsSTEP3
■Condensation build-up on the inside of the lens
Contact your Lexus dealer for more inform ation 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.
■LED light bulbs
The high mounted stoplights consist of a number of LEDs. If any LEDs burn out,
take your vehicle to your Lexus de aler to have the light replaced.
If two or more LEDs in a stoplight burn out, your vehicle may not conform to local
laws (SAE).

335
4-3. Do-it-yourself maintenance
4
Maintenance and care
CAUTION
■Replacing light bulbs
●Turn off the headlights. Do not attempt to replace the bulb immediately after turn-
ing off the headlights.
The bulbs become very hot and may cause burns.
●Do not touch the glass portion of the light bulb with ba re 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 en tering the headlight unit. This may damage
the headlights or cause condensation to build up on the lens.
●Do not attempt to repair or disassemble light bulbs, connectors, electric circuits
or component parts.
Doing so may result in serious injury due to electric shock.
■To prevent damage or fire
Make sure bulbs are fully seated and locked.

5
When trouble arises
347
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 vehi cle in a safe place and contact your Lexus
dealer.
Warning lightWarning light/Details
(U.S.A.)

(Canada)
Brake system warning light
•Low brake fluid
• Malfunction in the brake 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, bu t then turns off, this does not necessar-
ily indicate a malfunction in the system.

352
5-2. Steps to take in an emergency
■If the malfunction indicator lamp comes on while driving
First check the following:
●Is your vehicle low on gas?
If it is, refuel the vehicle immediately.
●Is the fuel tank cap loose?
If it is, tighten it securely.
The light will go off after taking several driving trips.
If the light does not go off even after several trips, contact your Lexus dealer as soon
as possible.
■Front passenger detection sensor and passenger seat belt reminder
●If luggage is placed on the front passenger seat, the front passenger detection
sensor may cause the warning light to flash, even if a passenger is not sitting in
the seat.
●If a cushion is placed on the seat, the sensor may not detect a passenger, and the
warning light may not operate properly.
■SRS warning light
This warning light system monitors the following:
●The airbag sensor assembly
●Front airbag sensors
●The curtain shield airbag sensors
●The side and curtain shield airbag sensors
●The occupant detection sy stem (ECU and sensors)
●“AIRBAG ON” and “AIRBA G OFF” indicator lights
●The seat belt buckle switches
●The driver’s seat position sensor
●The driver’s seat belt buckle switch
●Front passenger’s seat belt buckle switch
●The inflators
●The warning light
●The interconnecting wiring and power sources

5
When trouble arises
367
5-2. Steps to take in an emergency
If the engine will not start
If the engine will not start even though correct starting procedures are
being followed (
P. 95), consider each of the following points.
■The engine will not start even when the starter motor operates
normally
One of the following may be the cause of the problem.
● There may not be sufficient fuel in the vehicle’s tank.
Add fuel to the vehicle.
● The engine may be flooded.
Try to restart the engine once more following correct starting
procedures. ( P. 9 5 )
● There may be a malfunction in the engine immobilizer system.
( P. 4 9 )
■ The starter motor turns over slowly, interior lights and headlights
are dim, or the horn does not sound or sounds at a low volume
One of the following may be the cause of the problem.
●The battery may be discharged. ( P. 370)
● The battery terminal connections may be loose or corroded.
■ The starter motor does not turn over, interior lights and headlights
do not turn on, or the horn does not sound
One of the following may be the cause of the problem.
●One or both of the battery terminals may be disconnected.
● The battery may be discharged. ( P. 370)
Contact your Lexus dealer if the problem cannot be repaired, or if
repair procedures are unknown.

5
When trouble arises
371
5-2. Steps to take in an emergency
■To prevent battery discharge
●Turn off the headlights and the audio system while the engine is off.
●Turn off any unnecessary electrical components when the vehicle is running at a
low speed for an extended period, such as in heavy traffic, etc.
■When the battery is removed or discharged
The power windows and moon roof must be initialized.
CAUTION
■Avoiding battery fires or explosions
Observe the following precautions to prevent accidentally igniting the flammable
gas that may be emitted from the battery.
●Make sure the jumper cable is connected to the correct terminal and that it is not
unintentionally in contact with any pa rt other than the intended terminal.
●Do not allow the jumper cables to come into contact with the “+” and “-” termi-
nals.
●Do not allow open flame or use matches, cigarette lighters or smoke near the
battery.
Once your vehicle's engine has started, remove the jumper
cables in the exact reverse ord er in which they were con-
nected.
Once the engine starts, have the ve hicle checked at your Lexus dealer
as soon as possible.STEP5

383
6-1. Specifications
6
Vehicle specifications
Electrical system
Differential
Tr a n s f e r
Battery
Open voltage at
68F (20 C):12.6  12.8V Fully charged
12.2  12.4V Half charged
11.8  12.0V Discharged
(Voltage is checked 20 minutes after
the key is removed with all the lights
turned off.)
Charging rates5A max.
Oil capacity
Front
Rear1.5 qt. (1.4 L, 1.2 Imp.qt.)
3.3 qt. (3.1 L, 2.7 Imp.qt.)
Oil type and viscosity
Hypoid gear oil API GL-5
Above 0 F (-18C): SAE 90 or
SAE 85W-90
Below 0 F (-18 C): SAE 80W or
SAE 80W-90
Oil capacity1.5 qt. (1.4 L, 1.2 Imp.qt.)
Oil typeHypoid gear oil API GL-5
Recommended oil viscositySAE 75W-90

386
6-1. Specifications
Light bulbs
A: H11 halogen bulbs
B: HB3 halogen bulbs
C: Wedge base bulbs (clear)
D: Wedge base bulbs (amber)
E: H3 halogen bulbs
F: Double end bulbs
G: Single end bulbs
Light BulbsBulb No.WTy p e
Exterior
Headlights (low beam)55A
Headlights (high beam)900560B
Front turn signal lights4157NAK27/8D
Parking lights1685C
Fog lights55E
Front side marker light1685C
Stop/tail lights74 4 321 /5C
Stop/tail and rear side marker
lights74 4 321 /5C
Rear turn signal lights74 4 021C
Back-up lights74 4 021C
Running board lights1943.8C
License plate lights1685C
Interior
Vanity lights2F
Personal lights8G
Interior lights8F
Door courtesy lights3.8G
Glove box light1.2C