inflation 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

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

327
4-3. Do-it-yourself maintenance
4
Maintenance and care
08_IS350/250_U_(L/O_0808)
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. 329)
Initializing the tire pressure warning system
■ The tire pressure warning system mu st 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.

328
4-3. Do-it-yourself maintenance
08_IS350/250_U_(L/O_0808)■
How to initialize the tire pressure warning system
To initialize the system, use the satellite switch. (
P. 2 6 0 )
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. 4 3 9 )
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.
It may take several minutes to com-
plete the setting. Wait for several
minutes before turning the
“ENGINE START STOP” switch to
OFF if necessary.
STEP1
STEP2
STEP3
STEP4

329
4-3. Do-it-yourself maintenance
4
Maintenance and care
08_IS350/250_U_(L/O_0808)Recording tire inflation pressure
settings
Push and hold the “ON/OFF” but-
ton until the tire pressure warning
light blinks slowly three times and
the message “PRESSURE INI-
TIAL” appears on the multi-infor-
mation display.
Wait for a few minutes with the IGNITION ON mode, and then
turn the “ENGINE START STOP” switch OFF.
Registering and se
lecting ID codes
To select tire pressure warning valve and transmitter ID codes, use the
satellite switch. (
P. 2 6 0 )
■ Registering ID codes
2 sets of tire pressure warning valve and transmitter ID codes can be
registered. Once a second set of tires is registered at “2ND”, you can
switch between tire set settings simply by pressing the tire pressure
warning select switch.
There are 2 settings:
“MAIN” position: The ID code of the tire pressure warning valve and
transmitter on the tires originally installed on the vehicle is registered.
“2ND” position:The ID code is not registered. When you replace a
new set of tires, purchase tire pressure warning valves and transmitters
from your Lexus dealer and have the new ID code registered by your
Lexus dealer.
STEP5

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4-3. Do-it-yourself maintenance
4
Maintenance and care
08_IS350/250_U_(L/O_0808)
■Replacing tires and wheels
If the ID code of the tire pressure warning valve and transmitter is not registered,
the tire pressure warning system will not work properly. After driving for about 20
minutes, the tire pressure warning light comes on after blinking for 1 minute to indi-
cate a system malfunction.
■Tire life
Any tire over 6 years old must be checked by a qualified technician even if they
have seldom or never been used or damage is not obvious.
■If the tread wears down below 0. 16 in. (4 mm) on snow tires
The effectiveness of snow tires is lost.
■Low profile tires (models not equipped with 16-inch tires)
Generally, low profile tires will wear more rapidly and tire grip performance will be
reduced on snowy and/or icy roads when compared to standard tires. Be sure to
use snow tires or tire chains
* on snowy and/or icy roads and drive carefully at a
speed appropriate for road and weather conditions.
*: Tire chains cannot be mounted on 18-inch tires.
■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.
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. 4 4 9 )

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4-3. Do-it-yourself maintenance
08_IS350/250_U_(L/O_0808)
■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, al l season tires fall short in acceleration
and handling performance compared with 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 local regulations for possible restriction.
Snow tires should be installed on all wheels. (

P. 200)
■Initializing the tire pressure warning system
Initialize the tires with the tire inflation pressure adjusted to the specified level.
■When the initialization of the tire pressure warning system has failed
Initialization can be completed in a few minutes. However, in the following cases,
the settings have not been recorded and the system will not operate properly. If
repeated attempts to record tire inflation pressure settings are unsuccessful, have
the vehicle inspected by your Lexus dealer.
●When operating the tire pressure warning reset switch, the tire pressure warn-
ing light does not flash 3 times and the setting message does not appear on the
multi-information display.
●After carrying out the initialization procedure, the tire pressure warning light
blinks for 1 minute then stays on after driving for about 20 minutes.