tire pressure Lexus IS250 2009 Owner's Manual

TABLE OF CONTENTSIndex
08_IS350/250_U_(L/O_0808)
4
3-3. Using the interior lightsInterior lights list............................ 247
• Interior lights ............................... 249
• Personal lights ............................ 249
3-4. Using the storage features List of storage features................ 251
• Glove box...................................... 251
• Console boxes ........................... 252
• Overhead console.................... 253
• Cup holders................................. 254
• Bottle holders/door pockets .......................................... 256
3-5. Other interior features Sun visors......................................... 257
Vanity mirror ................................. 258
Clock ................................................. 259
Satellite switches ......................... 260
Ashtrays ........................................... 263
Cigarette lighter ........................... 264
Power outlet ................................... 265
Seat heaters.................................... 266
Seat heaters and ventilators ..................................... 269
Armrest ............................................ 272
Rear sunshade ............................... 273
Trunk storage extension............ 275
Coat hooks ..................................... 276
Floor mat.......................................... 277
Trunk features................................ 278
Garage door opener................... 281
Compass.......................................... 287 4-1. Maintenance and care
Cleaning and protecting the vehicle exterior .......................... 292
Cleaning and protecting the vehicle interior............................ 295
4-2. Maintenance Maintenance requirements .... 298
General maintenance ............... 300
Emission inspection and maintenance (I/M)
programs ..................................... 303
4-3. Do-it-yourself maintenance Do-it-yourself service precautions ................................. 304
Hood.................................................. 307
Positioning a floor jack.............. 308
Engine compartment................... 310
Tires ................................................... 325
Tire inflation pressure................. 336
Wheels............................................. 340
Air conditioning filter.................. 342
Electronic key battery ................ 345
Checking and replacing fuses ................................................ 347
Headlight aim.................................. 361
Light bulbs ....................................... 363
4Maintenance and care

08_IS350/250_U_(L/O_0808)
7

: If equipped
Tires
●Rotation
● Replacement
● Inflation pressure
● Information
P. 325
P. 404
P. 439
P. 449
Tail lights P. 156
Side marker lights P. 156
Trunk P. 43
Rear window defogger P. 218
Doors P. 39
Fuel filler door P. 74
Turn signal lights P. 139

191
2-4. Using other driving systems
2
When driving
08_IS350/250_U_(L/O_0808)
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. Exercise 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 information 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.

202
2-5. Driving information
08_IS350/250_U_(L/O_0808)
■Snow chain installation
Observe the following precautions when installing and removing chains.
●Install and remove tire chains in a safe location.
●Install tire chains on the rear tires only. Do not install tire chains on front tires.
●Install the tire chains on rear tires as tightly as possible. Retighten chains after
driving 1 /4 - 1 /2 mile (0.5 - 1.0 km).
●Install tire chains following the instructions provided in the accompanying
instructions.
CAUTION
■Driving with snow tires
Observe the following precautions to reduce the risk of accidents.
Failing to do so may result in a loss of vehicle control and cause death or serious
injury.
●Use tires of the size specified for your vehicle.
●Maintain the recommended level of air pressure.
●Do not drive in excess of 75 mph (120 km/h), regardless of the type of snow tires
being used.
●Use snow tires on all, not just some wheels.
■Driving with snow chains
Observe the following precautions to reduce the risk of accidents.
Failing to do so may result in the vehicle being unable to be driven safely, and may
cause death or serious injury.
●Do not drive in excess of the speed limit specified for the tire chains being used,
or 30 mph (50 km/h), whichever is lower.
●Avoid driving on bumpy road surfaces or over potholes.
●Avoid sudden turns and braking, as use of chains may adversely affect vehicle
handling.
●Slow down sufficiently before entering a curve to ensure that vehicle control is
maintained.

203
2-5. Driving information
2
When driving
08_IS350/250_U_(L/O_0808)
NOTICE
■Repairing or replacing snow tires
Request repairs of and obtain replacement snow tires from Lexus dealers or legiti-
mate tire retailers.
This is because the removal and attachment of snow tires affects the operation of
the tire air pressure sensor.
■Fitting tire chains
The tire air pressure sensor may not function correctly when tire chains are fitted.

261
3-5. Other interior features
3
Interior features
08_IS350/250_U_(L/O_0808)
Change the settings.
Press the “ON/OFF” button to
change the settings (e.g. on/off).
■Items that can be set us ing the satellite switches
STEP3
Intuitive parking assist (
P. 180) on/off (if
equipped)
Tire pressure warning system initialization
(
P. 327)
ID code selection for tire air pressure system
(
P. 329)
AFS (Adaptive Front-lighting System) (
P. 1 5 7 )
on/off (if equipped)
Vehicle speed indicator on/off and speed setting
(
P. 144)
Tacho indicator on/off and engine speed (rpm)
setting (
P. 1 4 4 )

Maintenance and care4
291
08_IS350/250_U_(L/O_0808)
4-1. Maintenance and careCleaning and protecting the vehicle exterior............. 292
Cleaning and protecting the vehicle interior .............. 295
4-2. Maintenance Maintenance requirements ....................... 298
General maintenance ......... 300
Emission inspection and maintenance (I/M)
programs............................... 303 4-3. Do-it-yourself
maintenance
Do-it-yourself service precautions ........................... 304
Hood .......................................... 307
Positioning a floor jack ......... 308
Engine compartment ............ 310
Tires............................................ 325
Tire inflation pressure........... 336
Wheels ...................................... 340
Air conditioning filter ........... 342
Electronic key battery.......... 345
Checking and replacing fuses ........................................ 347
Headlight aim .......................... 361
Light bulbs................................ 363

302
4-2. Maintenance
08_IS350/250_U_(L/O_0808)
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.

305
4-3. Do-it-yourself maintenance
4
Maintenance and care
08_IS350/250_U_(L/O_0808)
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 easily, 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.
ItemsParts and tools
Engine oil level (
P. 313)
• “Toyota Genuine Motor Oil” or equivalent
• Rag or paper towel, funnel (used
only for adding engine oil)
Fuses (
P. 3 4 7 )• Fuse with same amperage rating as
original
Tire inflation pressure (
P. 3 3 6 )• Tire pressure gauge
• Compressed air source
Headlight aim (
P. 3 6 1 )• Phillips-head screwdriver
Radiator and condenser (
P. 3 1 9 )

Wa s h e r f l u i d (
P. 3 2 4 )
• Water washer fluid containing anti-freeze (for winter use)
•Funnel

325
4-3. Do-it-yourself maintenance
4
Maintenance and care
08_IS350/250_U_(L/O_0808)
Tires
Replace or rotate tires in accordance with maintenance schedules and
treadwear.
■Checking tires
New tread
Treadwear indicator
Worn tread
The location of treadwear indi-
cators is shown by the “TWI” or
“

” marks, etc., molded on the
sidewall of each tire.
Check spare tire condition and
pressure if not rotated.
■ Tire rotation
2WD models with 16-inch tires or AWD models
Rotate the tires in the order
shown.
To equalize tire wear and extend
tire life, Lexus recommends that
tire rotation is carried out at the
same interval as tire inspection.
Do not fail to initialize the tire
pressure warning system after
tire rotation.
2WD models with non-directional 17-inch tiresRotate the tires in the order
shown.
To equalize tire wear and extend
tire life, Lexus recommends that
tire rotation is carried out at the
same interval as tire inspection.
Front
Front