2010 Lexus GX460 horn

734
5-2. Steps to take in an emergency
GX460_U.S.A. (OM60E69U)
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 wh en 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. 1 1 4 )
■ 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 8 )

5
When trouble arises
735
5-2. Steps to take in an emergency
GX460_U.S.A. (OM60E69U)
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 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. 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

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Alphabetical index
GX460_U.S.A. (OM60E69U)
Garage door opener .......................... 567
Gas station information......................824
Gauges ...................................................... 195
Glove box ................................................. 516
Glove box light ....................................... 516
Hands-free system for cellular 
phones.................................................... 477
Hazard lights Switch ...................................................... 674
Head restraints Adjustment............................................... 83
Headlights cleaner ................................ 241
Headlights Adaptive front lighting 
system .................................................. 223
Discharge headlights 
precautions ....................................... 672
Replacing light bulbs..........................661
Switch ...................................................... 220
Wattage.................................................... 761
Heaters Seat heaters ........................................... 551
Side mirror ............................................404
Heated steering..................................549
Height control Rear height control air 
suspension.......................................... 310
Hill-start assist control ......................... 331
Hood .......................................................... 607
Hooks Cargo ...................................................... 557
Cargo hooks .......................................559
Coat ........................................................ 555
Horn ............................................................ 194 I/M test ...................................................... 601
Identification
Engine ....................................................... 751
Vehicle...................................................... 751
Ignition switch .......................................... 179
Ignition switch light Ignition switch light ...............................511
Illuminated entry system ......................514
Indicator lights ........................................ 198
Initialization Items to initialize...................................801
Inside door handle light ........................ 511
Inside rear view mirror .......................... 96
Instrument cluster light control.........196
Interior lights Interior lights ............................................ 511
Switch ........................................................ 513
Wattage ................................................... 761
Intuitive parking assist......................... 259
Jack Vehicle-equipped jack....................720
Jack handle ............................................. 720
Keyless entry ................................................. 48
Keys Electronic key ......................................... 26
Engine switch .......................................... 29
If you lose your keys ......................... 737
If the electronic key does not 
operate properly............................ 738
Key number plate.................................. 26
Keyless entry........................................... 48
Keys.............................................................. 26
Mechanical key ...................................... 26
Wireless remote control key.......... 48G
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GX460_U.S.A. (OM60E69U)
What to do if...
What to do if...
A tire puncturesP. 7 2 0If you have a flat tire
The engine does not start
P. 1 1 4Engine immobilizer system
P. 7 3 4If the engine will not start
P. 74 1If the battery is discharged
The shift lever cannot be 
moved outP. 7 3 6If the shift lever cannot be shifted 
from “P”
The engine coolant temperature
gauge enters the red zone
Steam can be seen coming 
from under the hood
P. 74 4If your vehicle overheats
The key is lostP. 7 3 7If you lose your keys
The battery is dischargedP. 74 1If the vehicle has a discharged battery
The doors cannot be lockedP. 5 1Side doors
P. 5 4Back door
The horn begins to soundP. 1 1 6Alarm
The vehicle is stuck in mud or
sandP. 74 7If the vehicle becomes stuck