brake light Lexus IS250C 2012 Instrument cluster / LEXUS 2012 IS250C,IS350C (OM53A62U) Owner's Manual

432
4-3. Do-it-yourself maintenance
CAUTION
■When filling the reservoir
Take care because brake fluid can harm your hands or eyes and damage painted
surfaces.
If fluid gets in your eyes, flush your eyes with clean water immediately.
If you still experience discomfort, see a doctor.
NOTICE
■If the fluid level is low or high
It is normal for the brake fluid level to go down slightly as the brake pads wear or
when the fluid level in the accumulator is high.
If the reservoir needs frequent refilli ng, it may indicate a serious problem.

5
When trouble arises
495
5-2. Steps to take in an emergency
If a warning light turns on or a warning buzzer sounds...
Stop the vehicle immediately. Continuing to drive the vehicle may be dangerous.
The following warning indicates a possible problem in the brake system.
Immediately stop the vehi cle in a safe place and contact your Lexus
dealer.
*: Parking brake engaged warning buzzer
 P. 5 0 7
Stop the vehicle immediately.
The following warning indicates the po ssibility of damage to the vehicle
that may lead to an ac cident. Immediately stop the vehicle in a safe place
and contact your Lexus dealer.
Warning lightWarning light/Details
(U.S.A.)
(Canada)
Brake system warning light (warning buzzer)*
•Low brake fluid
• Malfunction in the brake booster system
This light also comes on when the parking brake is not
released. If the light turns off after the parking brake is fully
released the system is operating normally.
Warning lightWarning light/Details
Charging system warning lightIndicates a malfunction in the vehicle’s charging system.
Calmly perform the following actions if any of the warning lights turn on or
flash. If a light turns on or flashes, bu t then turns off, this does not necessar-
ily indicate a malfunction in the system.

496
5-2. Steps to take in an emergency
Have the vehicle inspected by your Lexus dealer immediately.
Failing to investigate the cause of the following warnings may lead to the
system operating abnormally and possibly cause an accident. Have the
vehicle inspected by your Lexus dealer immediately.
Warning lightWarning light/Details
(U.S.A.)
(Canada)
Malfunction indicator lamp
Indicates a malfunction in:
• The electronic engine control system;
• The electronic throttle control system; or
• The electronic automatic transmission control system.
SRS warning lightIndicates a malfunction in:
• The SRS airbag system; or
• The seat belt pretensioner system.
(U.S.A.)
(Canada)
“ABS” warning lightIndicates a malfunction in:
•The ABS;
• The brake assist system.
Electric power steering system warning light
Indicates a malfunction in the EPS (Electric Power Steering)
system.
Pre-collision system warning light (if equipped)Indicates a malfunction in the pre-collision system.
The warning light will operate as follows, even when the sys-
tem is not malfunctioning:
• The light will flash quickly wh en the system is operating.
( P. 2 2 7 )
• The light will flash when the pre-collision braking is dis- abled. ( P. 2 2 8 )
• The light will flash when the system cannot temporarily be
used. ( P. 5 0 7 )

5
When trouble arises
501
5-2. Steps to take in an emergency
■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 system warning light comes on
The steering wheel may become extremely heavy.
If the steering wheel becomes heavier than usual when operating, hold firmly and
operate 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.

5
When trouble arises
513
5-2. Steps to take in an emergency
*: Refer to the separate “Scheduled Maintenance” or “Owner’s Manual Supple-ment” for the maintenance interval applicable to your vehicle.
(Flashing)
(If equipped)
Indicates that there is a
high possibility of a fron-
tal collision, or that the
pre-collision braking
function is operating.
Slow the vehicle by apply-
ing the brakes.
■Warning light display in dynamic radar cruise mode (if equipped)
In the following cases, the warning light may not be displayed even if vehicle-to-
vehicle distance closes.
●When your vehicle and the vehicle ahead are traveling at the same speed or the
vehicle ahead is traveling more quickly than your vehicle
●When the vehicle ahead is traveling at a very low speed
●Immediately after cruise control speed is set
●At the instant the accelerator pedal is depressed
MessageDetailsCorrection procedure

616
Abbreviation list
Abbreviation/Acronym list
ABBREVIATIONSMEANING
ABSAnti-lock Brake System
AI-SHIFTArtificial Intelligence Shift
ALRAutomatic Locking Retractor
CRSChild Restraint System
DISPDisplay
ECTElectronic Controlled Transmission
ECUElectronic Control Unit
EDREvent Data Recorder
ELREmergency Locking Retractor
EPSElectric Power Steering
ETCSElectronic Throttle Control System
GAWRGross Axle Weight Rating
I/MEmission inspection and maintenance
LATCHLower Anchors and Tethers for Children
LEDLight Emitting Diode
MMTMethylcyclopentadienyl Manganese Tricarbonyl
M + SMud and Snow
MTBEMethyl Tertiary Butyl Ether
OBDOn Board Diagnostics
PCSPre-Collision System
SRSSupplemental Restraint System
TINTire Identification Number
TPMSTire Pressure Warning System
TRACTraction Control
VDIMVehicle Dynamics Integrated Management

618
Alphabetical index
Alphabetical index
A/C* ..........................................................248
ABS.............................................................. 219
Air conditioning filter ..........................453
Air conditioning systemAir conditioning filter ....................... 453
Automatic air conditioning system .................................................. 248
Airbags Airbag operating conditions........... 110
Airbag precautions for your child...........................................................114
Airbag warning light ........................ 496
Front passenger occupant classification system......................... 119
General airbag precautions ............114
Locations of airbags.......................... 106
Modification and disposal of airbags .................................................... 118
Proper driving posture ............ 104, 114
Side airbag operating conditions................................................ 111
Side airbag precautions .....................114
SRS airbags ........................................... 106
Alarm .......................................................... 100
Antenna* .................................................. 267
Anti-lock brake system ....................... 219
Ashtrays .................................................... 374
Audio input*............................................304 Audio system*
Antenna...................................................267
AUX port .............................................. 304
Bluetooth
® audio ............................. 309
CD player/changer ..........................270
iPod .......................................................... 285
MP3/WMA disc................................ 277
Optimal use ......................................... 302
Portable music player ..................... 304
Radio ........................................................262
Steering wheel audio switch........ 306
USB memory .......................................293
USB port ................................................293
Automatic air conditioning system* .................................................. 248
Automatic headlight leveling system ..................................................... 184
Automatic light control system.......... 181
Automatic transmission Automatic transmission ................... 153
If the shift lever cannot be shifted from P..................................... 531
S mode ..................................................... 157
AUX port* .............................................. 304
A

619
Alphabetical index
Back-up lightsWattage ..................................................577
Battery Checking ............................................... 433
If the vehicle has a discharged battery..................................................538
Preparing and checking before winter .................................... 238
Bluetooth
® audio* .............................. 309
Bluetooth® phone*............................. 328
Brake Fluid ............................................................ 431
Parking brake ........................................ 163
Brake assist ............................................... 219
Care Exterior ................................................... 402
Interior..................................................... 407
Seat belts ...............................................408
Cargo capacity ......................................234
Cargo hooks ............................................381
CD changer* ..........................................270
CD player* ..............................................270
Chains ....................................................... 238 Child restraint system
Booster seats, definition ...................124
Booster seats, installation ................. 131
Convertible seats, definition ...........124
Convertible seats, installation ......... 131
Front passenger occupant classification system ......................... 119
Infant seats, definition .........................124
Infant seats, installation ....................... 131
Installing CRS with LATCH anchors ..................................................129
Installing CRS with seat belts .......... 131
Installing CRS with top straps....... 134
Child safety Airbag precautions .............................. 114
Battery precautions ............. 435, 540
Child restraint system ........................124
How your child should wear the seat belt .......................................... 73
Installing child restraints................... 128
Power window lock switch ..............83
Power window precautions ........... 85
Removed electronic key battery precautions........................................ 457
Seat belt guide.......................................... 71
Seat belt extender precautions...... 75
Seat belt precautions .......................... 74
Seat heater precautions.................. 379
Trunk precautions................................. 53
B
*: For vehicles with a navigation system, refer to the “Navigation System Owner’s Manual”.
C

622
Alphabetical index
Floor mat ................................................. 380
FluidBrake.......................................................... 431
Washer ................................................... 436
Fog lights Switch ....................................................... 185
Wattage.................................................. 577
Foot well lights .......................................359
Front fog lights Switch ....................................................... 185
Wattage.................................................. 577
Front passenger occupant classification system ............................119
Front passenger's seat belt
reminder light...................................... 497
Front seats Adjustment............................................... 55
Driving position memory.................... 61
Seat position memory ........................ 65
Front turn signal lights Switch ........................................................ 162
Wattage.................................................. 577 Fuel
Capacity ................................................ 563
Fuel gauge .............................................. 166
Fuel pump shut off system ............ 494
Information ........................................... 578
Refueling ................................................... 95
Fuel door ..................................................... 95
Fuel filler door ........................................... 95
Fuel pump shut off system................. 494
Fuses .......................................................... 458
Garage door opener .......................... 384
Gauges .......................................................166
Glove box ................................................ 362
Glove box light ...................................... 362
Hands-free system for mobile phone* ............................. 328
Hazard lights Switch ...................................................... 486
Head restraints Adjusting .................................................. 67
Headlight aim ......................................... 474
Headlight cleaner...................................194F
G
H

625
Alphabetical index
Odometer ................................................. 166
OilEngine oil ............................................... 426
Opener Fuel filler door ........................................ 95
Hood ......................................................... 419
Trunk ............................................................. 51
Outer foot lights Outer foot lights................................. 359
Wattage ..................................................577
Outside rear view mirrors Adjusting and folding ..........................79
Mirror position memory ..................... 61
Outside temperature display ............ 177
Overheating, Engine ...........................542 Parking assist sensors* ........................ 213
Parking brake .......................................... 163
Parking lights
Replacing light bulbs ........................ 475
Switch.......................................................... 181
Wattage .................................................. 577
PCS ............................................................ 227
Personal lights Switch...................................................... 360
Power outlet............................................ 376
Power windows ........................................ 82
Pre-collision system............................. 227
Radar cruise control ............................. 199
Radiator ..................................................... 431
Radio*........................................................ 262
RDS* .......................................................... 264
Rear turn signal lights Replacing light bulbs ........................ 475
Wattage .................................................. 577
Rear view mirror Compass............................................... 390
Rear window defogger* .................... 257
Replacing Electronic key battery ..................... 456
Fuses........................................................ 458
Light bulbs ............................................. 475
Tires ........................................................... 518
Reporting safety defects for U.S. owners ..........................................602
Retractable hardtop ...............................86OP
*: For vehicles with a navigation system, refer to the “Navigation System Owner’s Manual”.
R