2008 Lexus IS250 inflation pressure

TABLE OF CONTENTSIndex
08_IS350/250_U_(L/O_0708)
4
3-4. Using the storage features .... 236List of storage features............... 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 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
4Maintenance and care

08_IS350/250_U_(L/O_0708)
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

Maintenance and care4
273
08_IS350/250_U_(L/O_0708)
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
08_IS350/250_U_(L/O_0708)
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
08_IS350/250_U_(L/O_0708)
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. 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. 316)• 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
08_IS350/250_U_(L/O_0708)
Installing tire inflation 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 the 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 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.

309
4-3. Do-it-yourself maintenance
4
Maintenance and care
08_IS350/250_U_(L/O_0708)■
How to initialize the tire pressure warning system
To initialize the system, use the satellite switch. ( →P. 245)
Park the vehicle in safe place and turn the “ENGINE START
STOP” switch to OFF.
While the vehicle is moving, initialization is not performed.
Adjust the tire inflation pressure to the specified cold tire inflation
pressure level. ( →P. 415)
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.
Recording tire inflation pressure
settings
Press and hold the “ON/OFF” but-
ton until the tire pressure warning
light blinks slowly 3 times and the
message “PRESSURE INITIAL”
showing that the initial setting is
complete is displayed on the multi-
information display.
Wait for a few minutes with the IGNITION ON mode, and then
turn the “ENGINE START STOP” switch OFF.
STEP1
STEP2
STEP3
STEP4
STEP5

311
4-3. Do-it-yourself maintenance
4
Maintenance and care
08_IS350/250_U_(L/O_0708)
■When to replace your vehicle’s tires
Tires should be replaced if:
●You have tire damage such as cuts, splits, cracks deep enough to expose the
fabric or bulges indicating internal damage
●A tire goes flat repeatedly or cannot be properly repaired due to the size or
location of a cut or other damage
If you are not sure, consult with your Lexus dealer.
■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 about 20 minutes, the
tire pressure warning light comes on after blinking for 1 minute to indicate 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 us ed 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 replaced tire is greater than 1 /2 of the Gross
Axle Weight Ratings (GAWR) of either the front axle or the rear axle, whichever is
greater.
As for the maximum load of the tire, see the load limit at maximum cold tire inflation
pressure mentioned on the sidewall of the tire, and as for the Gross Axle Weight
Ratings (GAWR), see the Certification Label. (
→P. 3 1 6 , 4 2 4 ) .