warning Lexus IS250 2012 Using the Bluetooth audio system / LEXUS 2012 IS250,IS350 (OM53A87U) Repair Manual

5
When trouble arises
497
5-2. Steps to take in an emergency
■When using the compact spare tire
As the compact spare tire is not equipped with the tire pressure warning valve and
transmitter, low inflation pressure of the spare tire will not be indicated. Also, if you
replace the compact spare tire after the tire pressure warning light comes on, the
light remains on.
■If you have a flat rear tire on a road covered with snow or ice
Install the compact spare tire on the front of the vehicle. Perform the following steps
and fit tire chains to the rear tires.
Replace a front tire with the compact spare tire.
Replace the flat rear tire with the tire removed from the front of the vehi-
cle.
Fit tire chains to the rear tires.
■After completing the tire change
The tire pressure warning system must be reset. ( P. 4 1 4 )
CAUTION
■Using the tire jack
Improper use of the tire jack may lead to death or serious injuries due to the vehicle
suddenly falling off the jack.
●Do not use the tire jack for any purpose other than replacing tires or installing and
removing tire chains.
●Only use the tire jack that comes with this vehicle for replacing a flat tire.
Do not use it on other vehicles, and do no t use other tire jacks for replacing tires
on this vehicle.
●Always check that the tire jack is securely set to the jack point.
●Do not put any part of your body under the vehicle while it is supported by a jack.
●Do not start or run the engine while your vehicle is supported by the jack.
●Do not raise the vehicle while someone is in it.
●When raising the vehicle, do not put an object on or under the jack.
●Do not raise the vehicle to a height greate r than that required to replace the tire.
STEP1
STEP2
STEP3

500
5-2. Steps to take in an emergency
NOTICE
■Do not drive the vehicle with a flat tire.
Do not continue driving with a flat tire.
Driving even a short distance with a flat tire can damage the tire and the wheel
beyond repair.
■Be careful when driving over bumps with the compact spare tire installed on the
vehicle.
The vehicle becomes lower when driving with the compact spare tire compared to
when driving with standard tires. Be careful when driving over uneven road sur-
faces.
■Driving with tire chains and the compact spare tire
Do not fit tire chains to the compact spare tire.
Tire chains may damage the vehicle body and adversely affect driving performance.
■When replacing the tires
When removing or fitting the wheels, tire s or the tire pressure warning valve and
transmitter, contact your Lexus dealer as the tire pressure warning valve and trans-
mitter may be damaged if not handled correctly.
■To avoid damage to the tire pressure warning valves and transmitters
When a tire is repaired with liquid seal ants, the tire pressure warning valve and
transmitter may not operate properly. If a liquid sealant is used, contact your Lexus
dealer or other qualified service shop as so on as possible. Make sure to replace the
tire pressure warning valve and transmitter when replacing the tire. ( P. 4 1 4 )

545
6-1. Specifications
6
Vehicle specifications
■DOT quality grades
All passenger vehicle tires must co nform to Federal Safety Require-
ments in addition to these grades. Quality grades can be found where
applicable on the tire sidewall between tread shoulder and maximum
section width.
For example: Treadwear 200 Traction AA Temperature A
■ Treadwear
The treadwear grade is a comparative rating based on the wear rate of
the tire when tested under controll ed conditions on a specified gov-
ernment test course.
For example, a tire graded 150 would wear one and a half (1 - 1 /2) times as
well on the government course as a tire graded 100.
The relative performance of tires de pends upon the actual conditions of
their use, however, and may depart significantly from the norm due to varia-
tions in driving habits, service practices and differences in road characteris-
tics and climate.
■ Traction AA, A, B, C
The traction grades, from highest to lowest, are AA, A, B and C, and
they represent the tire's ability to stop on wet pavement as measured
under controlled condit ions on specified government test surfaces of
asphalt and concrete.
A tire marked C may have poor traction performance.
Warning: The traction grade assigned to this tire is based on braking
(straight ahead) traction tests and does not include cornering (turning) trac-
tion.

546
6-1. Specifications
■Temperature A, B, C
The temperature grades are A (the highest), B, and C, representing
the tire's resistance to the generation of heat and its ability to dissipate
heat when tested under controlled conditions on a specified indoor
laboratory test wheel.
Sustained high temperature can cause the material of the tire to degenerate
and reduce tire life, and excessive temperature can lead to sudden tire fail-
ure.
The grade C corresponds to a level of performance which all passenger car
tires must meet under the Federal Mo tor Vehicle Safety Standard No. 109.
Grades B and A represent higher levels of performance on the laboratory
test wheel than the minimum required by law.
Warning: The temperature grades for this tire are established for a tire that
is properly inflated and not overloaded.
Excessive speed, underinflation, or excess ive loading, either separately or in
combination, can cause heat buildup and possible tire failure.
Glossary of tire terminology
Tire related termMeaning
Accessory weight
The combined weight (in excess of those standard
items which may be replaced) of automatic transmis-
sion, power steering, power brakes, power windows,
power seats, radio and heater, to the extent that these
items are available as factory-installed equipment
(whether installed or not)
Cold tire inflation pres-
sureTire pressure when the vehicle has been parked for
three hours or more, or has not been driven more
than 1 mile or 1.5 km under that condition
Curb weight
The weight of a motor vehicle with standard equip-
ment, including the maximum capacity of fuel, oil and
coolant, and if so equipp ed, air conditioning and
additional weight optional engine

559
6
Vehicle specifications
6-3. Initialization
Items to initialize
ItemWhen to initializeReference
Maintenance data
(U.S.A. only)After the maintenance is performedP. 3 8 6
Tire pressure warning
system
• When rotating the tires with differing front and rear tire inflation pressures.
• When changing the tire inflation pressure by changing traveling
speed.
• When changing the tire size.
P. 4 1 3
The following items must be initialized for normal system operation in cases
such as after the battery is reconnected, or maintenance is performed on
the vehicle.

576
Abbreviation list
Abbreviation/Acronym list
ABBREVIATIONSMEANING
2WDTwo Wheel Drive
ABSAnti-lock Brake System
AI-SHIFTArtificial Intelligence Shift
ALRAutomatic Locking Retractor
AW DAll Wheel Drive
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
SRSSupplemental Restraint System
TINTire Identification Number
TPMSTire Pressure Warning System
TRACTraction Control

578
Alphabetical index
Alphabetical index
A/C* ........................................................... 216
ABS.............................................................. 196
Air conditioning filter ..........................430
Air conditioning systemAir conditioning filter .......................430
Automatic air conditioning system*.................................................. 216
Airbags Airbag operating conditions........... 101
Airbag precautions for your child........................................................ 104
Airbag warning light .........................472
Curtain shield airbag operating conditions.............................................. 101
Curtain shield airbag
precautions ........................................ 104
Front passenger occupant classification system....................... 109
General airbag precautions ......... 104
Locations of airbags............................ 98
Modification and disposal of airbags .................................................. 108
Proper driving po sture ........... 96, 104
Side airbag operating conditions.............................................. 101
Side airbag precautions .................. 104
SRS airbags ............................................. 98
Alarm ............................................................ 92
Antenna* .................................................. 234 Anti-lock brake system ........................196
Armrest ..................................................... 351
Ashtrays.................................................... 342
Audio input* ............................................. 271
Audio system*
Antenna...................................................234
AUX port .................................................271
Bluetooth
® audio ..............................276
CD player/changer .......................... 237
iPod ...........................................................252
MP3/WMA disc................................244
Optimal use ......................................... 269
Portable music player ........................271
Radio ........................................................229
Steering wheel audio switch......... 273
USB memory ...................................... 260
USB port ............................................... 260
Automatic air conditioning system* ....................................................216
Automatic headlight leveling system ...................................................... 175
Automatic light control system......... 172
Automatic transmission Automatic transmission ................... 146
If the shift lever cannot be shifted from P................................... 503
S mode ..................................................... 149
AUX port* ................................................ 271
Auxiliary box .......................................... 335
A

580
Alphabetical index
Child-protectors ...................................... 49
Cigarette lighter....................................343
CleaningExterior ................................................... 378
Interior ..................................................... 382
Seat belts................................................383
Clock ........................................................ 338
Coat hooks ..............................................355
Compass ..................................................366
Condenser ..............................................406
Console box .......................................... 330
Cooling system Engine overheating ............................513
Cornering assist sensors .................... 190
Cruise control ......................................... 186
Cup holder ..............................................332
Curtain shield airbags............................98
Customizable features .......................553
Daytime running light system ............174
Defogger* Rear window ........................................ 224
Side mirror ............................................ 224
Dimension ................................................520
Dinghy towing ................................. 211, 212
Display Satellite switch mode ....................... 339
Trip information ................................... 168
Warning message.............................. 481 Do-it-yourself maintenance ...............391
Door courtesy lights
Door courtesy lights ........................ 325
Wattage ................................................. 536
Door pockets ......................................... 334
Doors Door lock ................................33, 45, 48
Door windows ....................................... 80
Side mirrors.............................................. 77
Driver's seat belt reminder light ..... 473
Driving Correct posture.....................................96
Procedures............................................. 130
Driving position memory...................... 58
Electric power steering........................196
Electronic key If the electronic key does not operate properly............................505
Emergency, in case of If a warning message is displayed .............................................. 481
If the electronic key does not
operate properly............................505
If the engine will not start .................501
If the shift lever cannot be shifted from P................................... 503
If the vehicle has a discharged battery ...................................................510
If the warning buzzer sounds........ 471
If the warning light turns on............ 471
D
E

588
Alphabetical index
Warning buzzersBrake system ......................................... 471
Open door .......................................... 473
Seat belt reminder............................. 473
Warning lights Anti-lock brake system....................472
Brake assist system............................472
Brake system ......................................... 471
Charging system ................................472
Electric power steering warning light ......................................472
Low fuel level ....................................... 473
Malfunction indicator lamp............472
Master warning light ........................ 473
Open door ........................................... 473
Pretensioners........................................472
Seat belt reminder light .................. 473
SRS airbags ...........................................472
Tire pressure warning light ........................................................ 473 Warning messages
AWD system....................................... 482
Engine oil level.................................... 484
Engine oil maintenance.................. 484
Engine oil pressure............................. 481
Hood ....................................................... 484
Intuitive parking assist ......... 482, 484
Moon roof............................................. 484
Open door ........................................... 484
Parking brake...................................... 484
Smart access system with push-button start ........................... 488
Steering lock........................................ 482
Tire pressure warning system................... 482, 484
Trunk........................................................ 484
Washer fluid ........................................ 484
Washer Checking................................................... 411
Preparing and checking before winter.................................... 206
Switch ........................................................ 178
Washing and waxing........................... 378W

591
What to do if...
A warning light or indicator
light comes onP. 4 7 1If a warning light turns on or a warning
buzzer sounds...
■Warning lights
or or
P. 4 7 1P. 4 7 2
P. 4 7 3
or
P. 4 7 2P. 4 7 3
P. 4 7 3P. 4 7 3
P. 4 7 2P. 4 7 2
P. 4 7 3P. 4 7 3
P. 4 7 2P. 4 7 2
Brake system warning lightMalfunction indicator lamp
ABS warning lightDriver’s seat belt reminder
light
Front passenger’s seat belt
reminder light
Low fuel level warning lightMaster warning light
SRS warning lightElectric power steering
warning light
Open door warning lightTire pressure warning light
Charging system warning
lightSlip indicator
A warning message is dis-
playedP. 4 8 1If a warning message is displayed