2012 Lexus IS F brake sensor

206
2-4. Using other driving systems
IS F_U
●When an extreme change in vehicle height occurs
●When the axis of the radar is out of adjustment
●When passing through certain toll gates
●When driving on a bridge.
When the system is activated in the situations described above there is also a possi-
bility that the seat belts will retract quickly and the brakes will be applied with a force
greater than normal. When the seat belt is locked in the retracted position, stop the
vehicle in a safe place, release the seat belt and refasten.
■When there is a malfunction in the system
Warning lights and/or warning messages will turn on or flash. ( →P. 463, 473)
■Situations in which the pre-collision system does not function properly
The system may not function effectively in situations such as the following:
●On roads with sharp bends or uneven surfaces
●If a vehicle suddenly moves in front of your vehicle, such as at an intersection
●If a vehicle suddenly cuts in front of your vehicle, such as when overtaking
●In inclement weather such as heavy rain, fog, snow or sand storms
●When your vehicle is skidding with the VSC system off
●When an extreme change in vehicle height occurs
●When the axis of the radar is out of adjustment
■Automatic cancelation of the pre-collision system
When a malfunction occurs due to sensor contamination, etc. that results in the
sensors being unable to detect obstacles, the pre-collision system will be automati-
cally disabled. In this case, the system will not activate even if there is a collision pos-
sibility.

5
When trouble arises
481
5-2. Steps to take in an emergency
IS F_U
(Flashing and then con-tinuously on)
(Flashing)
(If equipped)Indicates that the radar
cruise control sensor is
dirty or covered with ice.
Clean the sensor.
(Flashing and then con- tinuously on)
(Flashing)
(If equipped)Indicates that the radar
cruise control system is
unable to judge vehicle-
to-vehicle distance.
• Switch the driving mode to either the normal or
“Sport” mode.
• If the windshield wipers are on, turn them off or
set them to either the
intermittent or the slow
mode.
(Flashing)
(If equipped)
Indicates that your vehi-
cle is nearing the vehicle
ahead (in radar cruise
mode).
Slow the vehicle by apply-
ing the brakes.
Wa r n i n g m e s s a g eDetailsCorrection procedure

563
Alphabetical index
IS F_U
BrakeFluid .......................................................... 404
Parking brake ........................................148
Brake assist ............................................... 197
Care
Exterior ................................................... 378
Interior.......................................................381
Seat belts ............................................... 382
Cargo capacity ....................................... 210
Cargo hooks .......................................... 356
CD changer* ........................................... 241
CD player* ............................................... 241
Chains......................................................... 214
Child restraint system Booster seats, definition.......................111
Booster seats, installation .................. 117
Convertible seats, definition ..............111
Convertible seats, installation ......... 117
Front passenger occupant
classification system .......................106
Infant seats, definition ............................111
Infant seats, installation........................ 117
Installing CRS with lower
anchorages ...........................................116
Installing CRS with seat belts .......... 117
Installing CRS with top straps ......... 121
Child safety
Airbag precautions ............................. 101
Battery precautions............. 408, 504
Child restraint system ...........................111
Child-protectors.................................... 47
How your child should wear the seat belt ...........................................67 Installing child restraints..................... 115
Moon roof precautions...................... 82
Power window lock switch .............. 76
Power window precautions ............ 78
Removed electronic key battery
precautions....................................... 430
Seat belt comfort guide .....................65
Seat belt extender precautions......69
Seat belt precautions ..........................68
Seat heater precautions................. 350
Trunk precautions................................. 52
Child-protectors ...................................... 47
Cigarette lighter.................................... 347
Cleaning
Exterior....................................................378
Interior ...................................................... 381
Seat belts ................................................382
Clock ......................................................... 342
Coat hooks ..............................................354
Compass ..................................................365
Condenser ..............................................404
Console box ...........................................335
Cooling system Engine overheating.......................... 505
Cornering assist sensors ...................... 191
Cruise control Cruise control........................................173
Dynamic radar cruise control........ 177
Cup holders ............................................ 337
Curtain shield airbags............................ 94
Customizable features ...................... 538
C
*: For vehicles with a navigation system, refer to the “Navigation System Owner’s Manual”.

567
Alphabetical index
IS F_U
MaintenanceDo-it-yourself maintenance .........390
General maintenance .....................386
Maintenance data ............................... 512
Maintenance requirements .......... 384
Meter
Instrument panel light control ....... 152
Meters ...................................................... 150
Micro dust and pollen filter*.............224
Mirrors Inside rear view mirror ....................... 72
Side mirror heater ............................. 228
Side mirrors..............................................74
Vanity mirrors ....................................... 341
Moon roof ................................................... 79
MP3 disc* ............................................... 248
Multi-information display.................... 157
Noise from under vehicle ...................... 19
Odometer .................................................150
Oil Engine oil ............................................... 399
Opener
Fuel filler door ........................................ 83
Hood ....................................................... 393
Trunk ........................................................... 50
Outer foot lights
Outer foot lights................................. 330
Wattage ................................................. 522 Outside rear view mirrors
Adjusting and folding.......................... 74
Mirror position memory ....................55
Outside temperature display ........... 158
Overhead console ...............................336
Overhead courtesy lights
Overhead courtesy lights ............. 330
Wattage .................................................. 522
Overheating, Engine.......................... 505
Parking assist sensors*..........................191
Parking brake .......................................... 148
Parking lights Replacing light bulbs ........................ 447
Switch.........................................................162
Wattage .................................................. 522
PCS ............................................................203
Personal lights Switch....................................................... 332
Power outlet............................................348
Power windows ........................................ 76
Pre-collision system.............................203M
N
O
P
*: For vehicles with a navigation system, refer to the “Navigation System Owner’s Manual”.

570
Alphabetical index
IS F_U
TiresChains ....................................................... 214
Checking ................................................ 410
If you have a flat tire.......................... 487
Inflation pressure................................ 420
Inflation pressure sensor................. 410
Information............................................ 526
Replacing............................................... 487
Rotating tires ......................................... 410
Size ............................................................. 521
Snow tires ................................................ 214
Tools ...........................................................487
Total load capacity ................................ 213
Towing
Dinghy towing ....................................... 217
Emergency towing ...........................455
Trailer towing......................................... 216
TRAC.......................................................... 197
Traction control ...................................... 197
Transmission shift switches ........ 141, 143
Trip meter ................................................. 150
Trunk
Extending trunk space .................... 352
Opener ...................................................... 50
Trunk light Trunk light................................................... 51
Wattage.................................................. 522 Turn signal lights
Replacing light bulbs ........................ 447
Switch........................................................ 147
Wattage ..................................................522
USB port* ..................................... 256, 264
Vanity lights Vanity lights............................................ 341
Wattage ..................................................522
Vanity mirrors ..........................................341
VDIM........................................................... 197
Vehicle dynamics integrated management ......................................... 197
Vehicle identification number .......... 513
Vehicle stability control ....................... 197
Voice command switch ..................... 304
VSC ............................................................. 197
Warning buzzers Brake system....................................... 463
Open door .......................................... 466
Seat belt reminder ............................ 466
U
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