2014 Lexus IS250C horn

5
When trouble arises
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5-2. Steps to take in an emergency
IS250C/350C_U
■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. 5 3 2 )
● 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.

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Alphabetical index
IS250C/350C_U
HeadlightsDischarge headlight
precautions ....................................... 479
Replacing light bulbs .......................468
Switch ........................................................ 176
Wattage .................................................568
Heaters Seat heaters...........................................372
Side mirror .............................................. 251
Hill-start assist control ....................... 220
Hood ........................................................... 413
Hooks
Cargo ...................................................... 375
Shopping bag...................................... 375
Horn............................................................. 160 I/M test......................................................409
Identification
Engine..................................................... 553
Vehicle ................................................... 553
Ignition switch...........................................147
Illuminated entry system ....................354
Indicator lights..........................................167
Initialization Items to initialize ................................ 590
Inside rear view mirror .......................... 78
Interior lights Interior lights .........................................354
Switch...................................................... 355
Wattage ................................................. 568
Jack Positioning a floor jack ......................414
Vehicle-equipped jack .................... 513
Jack handle............................................... 513
*: For vehicles with a navigation system, refer to the “Navigation System Owner’s Manual”.
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622
IS250C/350C_U
What to do if...
What to do if...
A tire puncturesP. 5 1 3
P. 5 2 2If you have a flat tire
The engine does not start
P. 5 2 4If the engine will not start
P. 9 8Engine immobilizer system
P. 5 3 2If the vehicle battery is discharged
The shift lever cannot be
moved outP. 5 2 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. 5 3 6If your vehicle overheats
The key is lostP. 5 2 7If you lose your keys
The battery runs outP. 5 3 2If the vehicle battery is discharged
The doors cannot be lockedP. 4 7Doors
The horn begins to soundP. 1 0 0Alarm
The vehicle is stuck in mud or
sandP. 5 3 9If the vehicle becomes stuck
A warning message is displayedP. 5 0 0If a warning message is displayed