2010 Lexus IS250 inflation pressure

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IS350/250_U
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3-6. Using the storage featuresList of storage features............... 333
• Glove box .................................... 333
• Console boxes ........................... 334
• Overhead console .................. 335
• Cup holders................................. 336
•Bottle holders/door pockets .............................. 338
3-7. Other interior features Sun visors......................................... 339
Vanity mirrors............................... 340
Clock .................................................. 341
Satellite switches .......................... 342
Ashtrays ........................................... 345
Cigarette lighter ........................... 346
Power outlet ................................... 347
Seat heaters................................... 348
Seat heaters and ventilators ...................................... 351
Armrest ............................................ 354
Rear sunshade .............................. 355
Trunk storage extension ........... 357
Coat hooks .................................... 358
Floor mat.......................................... 359
Trunk features............................... 360
Garage door opener.................. 363
Compass.......................................... 369
Safety Connect ............................. 373 4-1. Maintenance and care
Cleaning and protecting the vehicle exterior................... 382
Cleaning and protecting the vehicle interior ................... 385
4-2. Maintenance Maintenance requirements.............................. 388
General maintenance ............... 390
Emission inspection and maintenance (I/M)
programs ...................................... 393
4-3. Do-it-yourself maintenance Do-it-yourself service precautions .................................. 394
Hood ................................................. 397
Positioning a floor jack.............. 398
Engine compartment................. 400
Tires .................................................... 414
Tire inflation pressure................. 425
Wheels ............................................. 429
Air conditioning filter................... 431
Electronic key battery ................ 434
Checking and replacing fuses ................................................ 436
Headlight aim ............................... 450
Light bulbs....................................... 452
4Maintenance and care

IS350/250_U
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∗: If equipped
Tires
●Rotation
● Replacement
● Inflation pressure
● Information
P. 414
P. 492
P. 528
P. 537
Tail lights P. 165
Side marker lights P. 165
Trunk P. 47
Rear window defogger P. 228
Doors P. 43
Fuel filler door P. 83
Turn signal lights P. 147

Maintenance and care4
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IS350/250_U
4-1. Maintenance and careCleaning and protecting the vehicle exterior............ 382
Cleaning and protecting the vehicle interior ............. 385
4-2. Maintenance Maintenance requirements ....................... 388
General maintenance ......... 390
Emission inspection and maintenance (I/M)
programs................................ 393 4-3. Do-it-yourself
maintenance
Do-it-yourself service precautions ........................... 394
Hood .......................................... 397
Positioning a floor jack ......... 398
Engine compartment ........... 400
Tires............................................. 414
Tire inflation pressure........... 425
Wheels ...................................... 429
Air conditioning filter ............ 431
Electronic key battery.......... 434
Checking and replacing fuses ........................................ 436
Headlight aim ......................... 450
Light bulbs................................ 452

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4-2. Maintenance
IS350/250_U
Vehicle exterior
ItemsCheck points
Steering wheel
• Moves smoothly?
• Has correct free play?
• No strange noises?
ItemsCheck points
Door/trunk• Operates 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.

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4-3. Do-it-yourself maintenance
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Maintenance and care
IS350/250_U
ItemsParts and tools
Engine oil level (→P. 4 0 3 )
• “Toyota Genuine Motor Oil” or
equivalent
• Rag or paper towel, funnel (used
only for adding engine oil)
Fuses (→ P. 4 3 6 )• Fuse with same amperage rating as
original
Tire inflation pressure ( →P. 4 2 5 )• Tire pressure gauge
• Compressed air source
Headlight aim ( →P. 4 5 0 )• Phillips-head screwdriver
Radiator and condenser
(→ P. 4 0 8 )
Wa s h e r f l u i d ( →P. 4 1 3 )
• Water washer fluid containing anti-
freeze (for winter use)
•Funnel

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4-3. Do-it-yourself maintenance
IS350/250_U
Installing tire pressure warning valves and transmitters
When replacing tires or wheels, tire pressure warning valves and trans-
mitters must also be installed.
When new tire pressure warning valves 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. 4 1 8 )
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 tire inflation pressure by changing traveling
speed.
● When changing the tire size.
When the tire pressure warning system is initialized, the current tire
inflation pressure is set as the pressure benchmark.

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4-3. Do-it-yourself maintenance
4
Maintenance and care
IS350/250_U■
How to initialize the tire pressure warning system
To initialize the system, use the satellite switch. ( →P. 3 4 2 )
Park the vehicle in safe place and turn the “ENGINE START
STOP” switch OFF.
While the vehicle is moving, initialization is not performed.
Adjust the tire inflation pressure to the specified cold tire inflation
pressure level. (→ P. 5 2 8 )
Make sure to adjust the tire pressure to the specified cold tire inflation
pressure level. The tire pressure warning system will operate based on
this pressure level.
Turn the “ENGINE START STOP” switch to IGNITION ON
mode.
The tire inflation pressure initial-
ization setting display
Continue to press “<” or “>” until
the initialization setting display
appears.
Recording tire inflation pressure
settings
Push and hold the “ON/OFF” but-
ton until the tire pressure warning
light blinks slowly three times.
Wait for a few minutes with the IGNITION ON mode, and then
turn the “ENGINE START STOP” switch OFF.
STEP1
STEP2
STEP3
STEP4
STEP5

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4-3. Do-it-yourself maintenance
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Maintenance and care
IS350/250_U
■Maximum load of tire
Check that the maximum load of the replacement tire is greater than 1 /2 of the
Gross Axle Weight Ratings (GAWR) of either the front axle or the rear axle, which-
ever is greater.
■Tire types
1 Summer tiresSummer tires are high-speed performance tires best suited to highway driving
under dry conditions. Since summer tires do not have the same traction perfor-
mance as snow tires, summer tires are inadequate for driving on snow-covered
or icy roads. For driving on snow-covered roads or icy roads, the use of snow tires
is recommended. When installing snow tires, be sure to replace all four tires.
2 All season tires All season tires are designed to provide better traction in snow and to be ade-
quate for driving in most winter conditions, as well as for use year round. All sea-
son tires, however, do not have adequate traction performance compared with
snow tires in heavy or loose snow. Also, all season tires fall short in acceleration
and handling performance compared wi th summer tires in highway driving.
3Snow tires
For driving on snow-covered roads or icy roads, we recommend using snow tires.
If you need snow tires, select tires of the same size, construction and load capac-
ity as the originally installed tires. Since your vehicle has radial tires as original
equipment, make sure your snow tires also have radial construction. Do not install
studded tires without first checking lo cal regulations for possible restriction.
Snow tires should be installed on all wheels. ( →P. 2 1 0 )
■Initializing the tire pressure warning system
Initialize the tires with the tire inflation pressure adjusted to the specified level. For the GAWR, see the Certification Label.
For the maximum load of the tire, see the load
limit at maximum cold tire inflation pressure
mentioned on the sidewall of the tire.
(
→P. 5 3 7 ) .