2010 Lexus GS350 horn

499
4-3. Do-it-yourself maintenance
4
Maintenance and care
GS_G_U (OM30C80U)
June 29, 2011 10:30 am
FuseAmpereCircuit
11H-LP R LWR15Headlight low beam (right)
12H-LP L LWR15Headlight low beam (left)
13F/ P M P25Fuel system
14EFI NO.125
Multiport fuel injection system/
sequential multiport fuel injection
system
15INJ20
Multiport fuel injection system/
sequential multiport fuel injection
system
16H-LP HI15Headlight high beams
17HORN10Horns
18WA S H E R20Windshield wipers and washer
19FR TAIL10Parking lights, side marker light
20FR FOG15Front fog lights

568
5-2. Steps to take in an emergency
GS_G_U (OM30C80U)
June 29, 2011 10:30 am
If the engine will not start
If the engine will not start even though correct starting procedures are
being followed (P. 135), consider each of the following points.
■The engine will not start even if you are carrying the correct elec-
tronic key
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. 135)
●There may be a malfunction in the immobilizer system. (P. 8 5 )
■The starter motor turns over slowly, the interior lights and head-
lights are dim, or the horn does not sound or sounds at a low vol-
ume
One of the following may be the cause of the problem.
●The 12 volt battery may be discharged. (P. 5 74 )
●The 12 volt battery terminal connections may be loose or corroded.
■The starter motor does not turn over, the interior lights and head-
lights 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 12 volt battery terminals may be disconnected.
●The 12 volt battery may be discharged. (P. 5 74 )
Contact your Lexus dealer if the problem cannot be repaired, or if
repair procedures are unknown.

635
Alphabetical index
GS_G_U (OM30C80U)
June 29, 2011 10:30 am
Engine coolant
Capacity................................................. 594
Checking ............................................... 455
Preparing and checking 
before winter ...................................... 219
Engine oil
Capacity.................................................590
Checking ................................................. 451
Preparing and checking 
before winter ...................................... 219
Engine oil maintenance data ........... 453
Engine (ignition) switch ....................... 135
Enhanced vehicle stability 
control ................................................... 200
Event data recorder............................ 532
First-aid kit storage belt..................... 408
Floor mats................................................ 406
Fluid
Brake ....................................................... 457
Washer ................................................... 462
Fog lights
Switch ........................................................160
Wattage ................................................ 600
Foot light .................................................. 382
Front passenger occupant 
classification system ..........................105
Front passenger’s seat belt 
reminder light ......................................537
Front seats
Adjustment .............................................. 53
Driver’s seat position memory ...... 55
Front turn signal lights
Wattage ................................................ 600Fuel
Capacity ................................................ 589
Fuel gauge...............................................147
Gas station information ................. 648
Information ............................................. 601
Refueling.................................................... 82
Fuel door ..................................................... 82
Fuel filler door ........................................... 82
Fuses ..........................................................484
Garage door opener ............................. 411
Gas station information......................648
Gauges .......................................................147
Glove box ................................................ 387
Hands-free system
(for cellular phone) .......................... 332
Head restraints ......................................... 60
Headlight aim ........................................ 509
Headlight cleaner .................................. 166
Headlights
Adaptive front lighting system...... 158
Discharge headlights 
precautions......................................... 518
Replacing light bulbs ......................... 512
Switch.........................................................157
Wattage ................................................. 600
Heaters
Seat heaters ......................................... 400
Side mirror.............................................255
Hill-start assist control ....................... 200
Hood .......................................................... 445
Hooks
Cargo ..................................................... 408
Shopping bag ..................................... 408
Horn ............................................................ 146
F
G
H

642
GS_G_U (OM30C80U)
June 29, 2011 10:30 am
What to do if...
What to do if...
A tire puncturesP. 5 5 6 /
566If you have a flat tire
The engine does not start
P. 8 5Immobilizer system
P. 5 6 8If the engine will not start
P. 5 74If the 12 volt battery is discharged
The shift lever cannot be 
moved outP. 5 6 9If 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. 5 7 8If your vehicle overheats
The key is lostP. 5 7 0If you lose your keys
The 12 volt battery runs outP. 5 74If the 12 volt battery is discharged
The doors cannot be lockedP. 4 3Doors
The horn begins to soundP. 8 7Alarm
The vehicle is stuck in mud or
sandP. 5 8 1If the vehicle becomes stuck