2012 Lexus GX460 lights

5
When trouble arises
697
5-2. Steps to take in an emergency
GX460_U.S.A. (OM60J00U)
CAUTION
■If both the ABS and the brake system warning lights remain on
Stop your vehicle in a safe place immediately and contact your Lexus dealer. The
vehicle will become extremely unstable during braking, and the ABS system may
fail, which could cause an accident resulting in death or serious injury.
■When the power steering system warning light comes on
The steering wheel may become extremely heavy.
If the steering wheel becomes heavier than usual when operating, hold firmly and
operate using more force than usual.
■If the tire pressure warning light comes on
Be sure to observe the following precautions. Failure to do so could cause loss of
vehicle control and result in death or serious injury.
●Stop your vehicle in a safe place as soon as possible. Adjust the tire inflation pres-
sure immediately.
●If the tire pressure warning light comes on even after tire inflation pressure adjust-
ment, it is probable that you have a flat tire. Check the tires. If the tire is flat,
change to the spare tire and have the flat tire repaired by the nearest Lexus
dealer.
●Avoid abrupt maneuvering and braking. If the vehicle tires deteriorate, you could
lose control of the steering wheel or the brakes.
■If a blowout or sudden air leakage should occur
The tire pressure warning system may not activate immediately.

700
5-2. Steps to take in an emergency
GX460_U.S.A. (OM60J00U)
If a warning message is displayed
Stop the vehicle immediately.
A buzzer sounds and a warning message is shown on the multi-informa-
tion display. 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.
Wa r n i n g m e s s a g eDetails
Indicates abnormal engine oil pressure The warning light may come on if the engine oil pres-
sure is too low.
If a warning is shown on the instrument cluster, stay calm and perform the
following actions:
Master warning light
The master warning light also
comes on or flashes in order to
indicate that a message is cur-
rently being displayed on the
instrument cluster.
Multi-information display
Rear height control air sus-
pension display
If any of the warning lights comes on again after the following actions
have been performed, co ntact your Lexus dealer.

5
When trouble arises
735
5-2. Steps to take in an emergency
GX460_U.S.A. (OM60J00U)
If the engine will not start
If the engine will not start even though correct starting procedures are
being followed (
→P. 179), 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.
Refuel the vehicle.
● The engine may be flooded.
Try to restart the engine once more following correct starting
procedures. ( →P. 1 7 9 )
● There may be a malfunction in the engine immobilizer system.
(→ P. 115)
■ 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. 74 1 )
● The battery terminal connections may be loose or corroded.
■ The starter motor does not turn over
The engine starting system may be malfunctioning due to an electri-
cal problem such as an open circuit or a blown fuse. However, an
interim measure is available to start the engine. ( →P. 7 3 9 )

736
5-2. Steps to take in an emergency
GX460_U.S.A. (OM60J00U)
Emergency start function
When the engine does not start, the following steps can be used as an
interim measure to start the engine if the “ENGINE START STOP” switch
is functioning normally:Set the parking brake.
Shift the shift lever to P.
Turn the “ENGINE START STOP” switch to ACCESSORY
mode.
Press and hold the “ENGINE START STOP” switch for about 15
seconds while depressing the brake pedal firmly.
Even if the engine can be started using the above steps, the system may
be malfunctioning. Have the vehicle inspected by your Lexus dealer.
■ The starter motor does not turn ov er, 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. 74 1 )
● There may be a malfunction in the steering lock system.
Contact your Lexus dealer if the problem cannot be repaired, or if
repair procedures are unknown.
STEP1
STEP2
STEP3
STEP4

742
5-2. Steps to take in an emergency
GX460_U.S.A. (OM60J00U)
■Starting the engine when the battery is discharged
The engine cannot be started by push-starting.
■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.
■Charging the battery
The electricity stored in the battery will discharge gradually even when the vehicle
is not in use, due to natural discharge and the draining effects of certain electrical
appliances. If the vehicle is left for a long time, the battery may discharge, and the
engine may be unable to start. (The battery recharges automatically during driving.)
Start the engine of the second vehicle. Increase the engine
speed slightly and maintain at that level for approximately 5
minutes to recharge the battery of your vehicle.
Open and close any of the doors of your vehicle with the
“ENGINE START STOP” switch off.
Maintain the engine speed of the second vehicle and start the
engine of your vehicle by turning the “ENGINE START STOP”
switch to IGNI TION ON mode.
Once your vehicle’s engine has started, remove the jumper
cables in the exact reverse order in which they were con-
nected.
Once the engine starts, have the vehicle checked at your Lexus dealer
as soon as possible.STEP3
STEP4
STEP5
STEP6

758
6-1. Specifications
GX460_U.S.A. (OM60J00U)
Electrical system
Front differential
*: Your Lexus vehicle is filled with “Toyota Genuine Differential Gear Oil” at the
factory.
Use Lexus approved “Toyota Genuine Differential Gear Oil” or an equivalent of
matching quality to satisfy the above specification. Please contact your Lexus
dealer for further details.
Battery
Open voltage* at
68 °F (20 °C):12.6  12.8 V Fully charged
12.2  12.4 V Half charged
11.8  12.0 V Discharged
(
*: Voltage is checked 20 minutes after the
engine and all the lights are turned off.)
Charging rates5A max.
Oil capacity1.48 qt. (1.40 L, 1.23 Imp.qt.)
Oil type and viscosity*Toyota Genuine Differential
Gear Oil LT 75W-85 GL5 or equivalent

763
6-1. Specifications
6
Vehicle specifications
GX460_U.S.A. (OM60J00U)
Light bulbs
A: HB3 halogen bulbsB: D4S discharge bulbs
C: H11 halogen bulbs D: Wedge base bulb (amber)
E: Wedge base bulb (clear)
*:If equipped
Light bulbsBulb No.WTy p e
Exterior
Headlights
High beam
Low beam (discharge bulbs
*)
Low beam (halogen bulbs
*)
9005 
6035
55A B
C
Front turn signal lights21D
Parking/front side marker
lights5E
Front fog lights55C
Rear turn signal lights21D
Back-up lights92116E
Rear side marker lights5E
Running board lights5E
Interior
Personal/Interior lights Front
Rear

5
5E
E
Vanity lights8E
Door courtesy lights5E

790
6-2. Customization
GX460_U.S.A. (OM60J00U)
Wi re le ss
remote
control
(
→P. 4 7 )
REMOTE
2-PRESS
UNLOCK
(Allows all
doors to be
unlocked by
pressing
on the elec-
tronic key once)
Driver’s
door
unlocked in
first step, all
doors
unlocked in
second step
All doors
unlocked in
first step
O–OO
Pa n i c f u n c t i o n OnOff–––O
Automatic
light con-
trol system
(
→P. 2 1 9 )
HEADLIGHT
OFF TIME
ADJUSTMENT
(Adjust the time
elapsed before
the headlights
automatically
turn off)
30 seconds
Off
O–OO60 seconds
90 seconds
ItemFunctionDefault settingCustomized setting