5
When trouble arises
469
5-2. Steps to take in an emergency
10_IS250C/350C_U
■If the open retractable hardtop warning buzzer sounds
Immediately stop the vehicle in a safe place and open or close the retractable hard-
top fully.
CAUTION
■When the electric power steering warning light comes on
The steering wheel may become extremely heavy.
If the steering wheel becomes heavier than usual when operating, firmly hold and
operate it 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.Vehicles with run-flat tires
• Decelerate to the lowest appropriate speed as soon as possible. Do not drive over 50 mph (80 km/h).
• Check and adjust the tire inflation pressure immediately.
• If the tire pressure warning light comes on even after tire inflation pressure adjustment, it is probable that you have a flat tire. Have the tire replaced 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.
Vehicles with standard tires
• Stop your vehicle in a safe place as soon as possible. Adjust the tire inflation pressure immediately.
• If the tire pressure warning light comes on even after tire inflation pressure adjustment, 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.
579
Alphabetical index
10_IS250C/350C_U
Shift leverAutomatic transmission.................... 147
If the shift lever cannot be shifted from P ................................... 499
Manual transmission ..........................154
Shift lever light ....................................... 338
Shift lock system ................................... 499
Shopping bag hooks ........................... 359
Side airbags ............................................. 100
Side marker lights
Switch ........................................................ 173
Side mirror
Adjusting and folding ..........................75
Mirror position memory ................... 56
Smart access system with push-button start
Entry function ......................................... 28
Starting the engine.............................. 142
Spare tire Inflation pressure ................................. 416
Storage location.................................486
Spark plug ............................................... 532
Specifications......................................... 526
Speech command switch..................... 311
Speedometer Speed indicator ....................................159
Speedometer ........................................159 Steering wheel
Adjustment ............................................... 72
Audio switches ................................... 286
Steering wheel position
memory ..................................................56
Storage feature......................................340
Stuck If your vehicle becomes stuck ...... 512
Sun visors .................................................346
Switch ECT switch............................................. 148
Emergency flasher switch .............452
Engine switch .........................................142
ETCS switch .......................................... 155
Fog light switch .....................................176
Hazard light switch ...........................452
Ignition switch ........................................142
Light switches ........................................173
Power door lock switch .................... 43
Power window switch ........................ 78
Roof switch................................................ 81
Satellite switches.................................349
Transmission shift switches ........................................149, 151
Window lock switch............................ 78
Wipers and washer switch ............. 177
