flat tire Lexus IS250 2008 Do-it-yourself maintenance / LEXUS 2008 IS250 OWNER'S MANUAL (OM53699U)

TABLE OF CONTENTS
1
1Before drivingAdjusting and operating features such as door locks, mir-
rors, and steering column.
2When drivingDriving, stopping and safe-driving information.
3Interior featuresAir conditioning and audio systems, as well as other interior
features for a comfortable driving experience.
4Maintenance
and careCleaning and protecting your vehicle, performing do-it-your-
self maintenance, and maintenance information.
5When trouble
arisesWhat to do if the vehicle needs to be towed, gets a flat tire,
or is involved in an accident.
6Vehicle
specificationsDetailed vehicle information.
7For ownersReporting safety defects for U.S. owners and seat belt in-
structions for Canadian owners
IndexAlphabetical listing of informat ion contained in this manual.

TABLE OF CONTENTSIndex
4
3-4. Using the storage features .... 236List of storage fe atures............... 236
• Glove box..................................... 236
• Console boxes ........................... 237
• Overhead console................... 238
• Cup holders................................. 239
• Bottle holders/ door pockets ................................ 241
3-5. Other interior features........... 242 Sun visors......................................... 242
Vanity mirror .................................. 243
Clock ................................................. 244
Satellite switches .......................... 245
Ashtrays .......................................... 248
Cigarette lighter ........................... 249
Power outlet .................................. 250
Seat heaters ..................................... 251
Seat heaters and ventilators .... 253
Armrest ............................................ 255
Rear sunshade ............................... 256
Trunk storage extension........... 258
Coat hooks ..................................... 259
Floor mat......................................... 260
Trunk features................................. 261
Garage door opener .................. 264
Compass.......................................... 269 4-1. Maintenance and care............ 274
Cleaning and protecting the vehicle exterior................... 274
Cleaning and protecting the vehicle interior .................... 277
4-2. Maintenance............................. 280 Maintenance requir ements .... 280
General maintena nce ................ 282
Emission inspection and maintenance (I/M)
programs ..................................... 285
4-3. Do-it-yourself maintenance............................ 286
Do-it-yourself service precautions .................................. 286
Hood................................................. 289
Positioning a floor jack.............. 290
Engine compartment.................. 292
Tires .................................................. 306
Tire inflation pressure.................. 316
Wheels............................................. 320
Air conditioning filter.................. 322
Electronic key battery ................ 325
Checking and replacing fuses ................................................ 327
Headlight aim.................................. 341
Light bulbs ....................................... 342
4Maintenance and care

1
2
3
4
5
6
7
5
5-1. Essential information .............. 350If your vehicle needs to be towed ...................................... 350
If you think something is wrong ......................................... 356
Fuel pump shut off system ........ 357
Event data recorder ................... 358
5-2. Steps to take in an emergency .............................. 360
If a warning light turns on or a warning buzzer
sounds... ....................................... 360
If a warning message is displayed ....................................... 369
If you have a flat tire.................... 382
If the engine will not start ........... 391
If the shift lever cannot be shifted from P .............................. 392
If you lose your keys .................... 393
If the electronic key does not operate properly ....................... 394
If the vehicle battery is discharged ................................... 397
If your vehicle overheats .......... 400
If the vehicle becomes stuck ... 402 6-1. Specifications ............................ 406
Maintenance data (fuel, oil level, etc.)..................... 406
Fuel information ............................. 421
Tire information ............................ 424
6-2. Customization .......................... 436 Customizable features .............. 436
6-3. Initialization ................................ 441 Items to initialize ............................ 441
Reporting safety defects for U.S. owners........................... 444
Seat belt instructions for Canadian owners
(in French) .................................... 445
Abbreviation list .................................. 448
Alphabetical index.............................. 450
What to do if... ...................................... 462
5When trouble arises6Vehicle specifications
7For owners
Index

7
: If equipped
Tires
●Rotation
● Replacement
● Inflation pressure
● Information
P. 306
P. 382
P. 415
P. 424
Tail lights P. 143
Side marker lights P. 143
Trunk P. 41
Rear window defogger P. 200
Doors P. 37
Fuel filler door P. 69
Turn signal lights P. 128

116
2-1. Driving procedures
NOTICE
■If you hear a squealing or scraping noise (brake pad wear limit indicators)
Have your Lexus dealer check and replac e the brake pads as soon as possible.
The rotor damage can result if the pads are not replaced when needed.
Front brake only: Moderate levels of the brake pad and disc wear allow enhanced
front braking power. As a result, the disc s may wear more quickly than conventional
brake discs. Therefore, when replacing the brake pads, Lexus recommends that you
also have the thickness of the discs measured.
It is dangerous to drive the vehicle when the wear limits of the brake pads and/or
that of the brake discs are exceeded.
■If you get a flat tire while driving
A flat or damaged tire may cause the following situations. Hold the steering wheel
firmly and gradually press the brak e pedal to slow down the vehicle.
●It may be difficult to control your vehicle.
●The vehicle will make abnormal sounds.
●The vehicle will behave abnormally.
Replace a flat tire with a new one. ( P. 3 8 4 )
■When encountering flooded roads
Do not drive on a road that has flooded after heavy rain etc. Doing so may cause the
following serious damage to the vehicle.
●Engine stalling
●Short in electrical components
●Engine damage caused by water immersion
In the event that you drive on a flooded road and the vehicle is flooded, be sure to
have your Lexus dealer check the following.
●Brake function
●Changes in quantity and quality of oil an d fluid used for the engine, transmission,
differential, etc.
●Lubricant condition for the propeller shaft, bearings and suspension joints (where
possible) and the function of all joints, bearings, etc.

175
2-4. Using other driving systems
2
When driving
CAUTION
■TRAC may not operate effectively when
Directional control and power may not be achievable while driving on slippery road
surfaces, even if the TRAC system is operating.
Do not drive the vehicle in conditions where stability and power may be lost.
■If hill-start assist control does not operate effectively
(vehicles with an automatic transmission)
The hill-start assist control may not operate effectively on steep inclines and roads
covered in ice.
■When the VSC is activated
The slip indicator light flashes and a warning buzzer sounds. Always drive carefully.
Reckless driving may cause an accident. Ex ercise particular care when the indica-
tor light flashes and a buzzer sounds.
■When TRAC and VSC are off
Be especially careful and drive at a speed appropriate to the road conditions. As
there are systems to ensure vehicle stability and driving force, do not turn off TRAC
and VSC unless necessary.
■Replacing tires
Make sure that all tires are of the same size, brand, tread pattern and total load
capacity. In addition, make sure that the tires are inflated to the recommended tire
pressure level.
The ABS and VSC systems will not function correctly if different tires are fitted on
the vehicle.
Contact your Lexus dealer for further info rmation when replacing tires or wheels.
■Handling of tires and suspension
Using tires with any kind of problem or modifying the suspension will affect the driv-
ing assist systems, and may cause the system to malfunction.

Maintenance and care4
273
4-1. Maintenance and care ............................... 274
Cleaning and protecting the vehicle exterior.............. 274
Cleaning and protecting the vehicle interior .............. 277
4-2. Maintenance .................. 280 Maintenance requirements ....................... 280
General maintenance ......... 282
Emission inspection and maintenance (I/M)
programs............................... 285
4-3. Do-it-yourself maintenance ................ 286
Do-it-yourself service precautions ........................... 286
Hood ......................................... 289
Positioning a floor jack ......... 290
Engine compartment............ 292
Tires ............................................ 306
Tire inflation pressure ............ 316 Wheels ...................................... 320
Air conditioning filter ........... 322
Electronic key battery.......... 325
Checking and replacing
fuses ........................................ 327
Headlight aim .......................... 341
Light bulbs ................................ 342

284
4-2. Maintenance
Vehicle exterior
ItemsCheck points
Steering wheel
• Moves smoothly?
• Has correct free play?
• No strange noises?
ItemsCheck points
Door/trunk• Operate smoothly?
Engine hood• The lock system works properly?
Fluid leaks• Is there any leakage after parking?
Ti r e
• Inflation pressure is correct?
• Tire surfaces not worn or dam-aged?
• Tires rotated according to the maintenance schedule?
• Wheel nuts are not loose?
CAUTION
■If the engine is running
Turn the engine off and ensure that there is adequate ventilation before performing
maintenance checks.

287
4-3. Do-it-yourself maintenance
4
Maintenance and care
CAUTION
The engine compartment contains many mechanisms and fluids that may move sud-
denly, become hot, or become electrically energized. To avoid death or serious injury,
observe the following precautions.
■When working on the engine compartment:
●Keep hands, clothing, and tools away from the moving fan and engine drive belt.
●Be careful not to touch the engine, radiator , exhaust manifold, etc. right after driv-
ing as they may be hot. Oil and other fluids may also be hot.
●Do not leave anything that may burn easi ly, such as paper or rags, in the engine
compartment.
●Do not smoke, cause sparks or expose an open flame to fuel or the battery. Fuel
and battery fumes are flammable.
●Be extremely cautious when working on the battery. It contains poisonous and
corrosive sulfuric acid.
ItemsPa r t s a n d t o o l s
Engine oil level ( P. 2 9 5 )
• “Toyota Genuine Motor Oil” or
equivalent
• Rag or paper towel, funnel (used only for adding engine oil)
Fuses ( P. 3 2 7 )• Fuse with same amperage rating as
original
Tire inflation pressure ( P. 3 1 6 )• Tire pressure gauge
• Compressed air source
Headlight aim ( P. 3 4 1 )• Phillips-head screwdriver
Radiator and condenser (P. 3 0 1 )
Wa s h e r f l u i d (P. 3 0 5 )
• Water washer fluid containing anti-
freeze (for winter use)
•Funnel

308
4-3. Do-it-yourself maintenance
Installing tire pressure warning valves and transmittersWhen replacing tires or wheels, tire pressure warning valves and trans-
mitters must also be installed.
When new tire pressure warning va lves and transmitters are installed,
new tire pressure warning valve and transmitter ID codes must be regis-
tered in the tire pressure warning computer and tire pressure warning
system must be initialized. Have tire pressure warning valve and transmit-
ter ID codes registered by your Lexus dealer. ( P. 310)
Initializing the tire pressure warning system
■ The tire pressure warning system must be initialized in the following
circumstances:
●When rotating the tires on vehicles differing with front and rear tire
inflation pressures.
● When changing the ti re inflation pressure by changing traveling
speed.
● When changing the tire size.
When the tire pressure warning sy stem is initialized, the current tire
inflation pressure is set as the pressure benchmark.