5
When trouble arises
489
5-2. Steps to take in an emergency
IS350/250_U
If the engine will not start
If the engine will not start even though correct starting procedures are
being followed (
→P. 134), 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 3 4 )
● There may be a malfunction in the engine 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 battery may be discharged. ( →P. 4 9 8 )
● The battery terminal connections may be loose or corroded.
■ The starter motor does not turn ov er, 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 battery terminals may be disconnected.
● The battery may be discharged. ( →P. 4 9 8 )
● 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.
568
Alphabetical index
IS350/250_U
Hands-free system for mobile phone ...............................284
Hazard lights Switch ......................................................450
Head restraints Adjusting .................................................. 57
Headlight aim .........................................438
Headlight cleaner ...................................174
Headlights Discharge headlight
precautions ....................................... 447
Replacing light bulbs........................ 439
Switch ....................................................... 165
Wattage.................................................. 524
Heaters Seat heaters............................. 335, 338
Side mirror .............................................. 214
Hill-start assist control ......................... 185
Hood ......................................................... 383
Hooks
Cargo ...................................................... 347
Coat ......................................................... 345
Shopping bag...................................... 347
Horn ............................................................ 150
I/M test ...................................................... 379
Identification Engine .................................................... 509
Vehicle ................................................... 509
Ignition switch.......................................... 134
Illuminated entry system ..................... 315
Indicator lights......................................... 157
Initialization Items to initialize ................................. 546 Inside rear view mirror .......................... 70
Interior lights
Interior lights .......................................... 315
Switch........................................................ 317
Wattage ................................................. 524
Jack Positioning a floor jack ................... 384
Vehicle-equipped jack..................... 481
Jack handle .............................................. 481
Keyless entry ............................................. 40
Keys Electronic key ......................................... 24
Engine switch ........................................ 134
If you lose your keys .........................492
If the electronic key does not operate properly............................ 493
Key number.............................................. 24
Keyless entry........................................... 40
Keys.............................................................. 24
Mechanical key ......................................25
Wireless remote control key.......... 40H
I
J
K
574
IS350/250_U
What to do if...
What to do if...
A tire puncturesP. 4 8 1If you have a flat tire
The engine does not start
P. 4 8 9If the engine will not start
P. 8 5Engine immobilizer system
P. 4 9 8If the vehicle battery is discharged
The shift lever cannot be
moved out of PP. 4 9 1If 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 0 1If your vehicle overheats
The key is lostP. 4 9 2If you lose your keys
The battery runs outP. 4 9 8If the vehicle 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 0 4If the vehicle becomes stuck
