run flat Lexus IS250 2010 Do-It-Yourself Maintenance / LEXUS 2010 IS350 IS250 OWNERS MANUAL (OM53A23U)

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3-6. Using the storage features
List 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 ............................. 3734-1. 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

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: If equipped
Tires
●Rotation
●Replacement
●Inflation pressure
●Information
P. 414
P. 492
P. 529
P. 538
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

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4-2. Maintenance
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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When trouble arises
461
5-1. Essential information
If your vehicle needs to be towed
Before towing
The following may indicate a problem with your transmission. Contact
your Lexus dealer before towing.
●The engine is running, but the vehicle will not move.
●The vehicle makes an abnormal sound.
Emergency towing
If a tow truck is not available, in an emergency your vehicle may be tem-
porarily towed using a cable or chain secured to the emergency towing
eyelet(s). This should only be attempted on hard, surfaced roads for short
distances at low speeds.
A driver must be in the vehicle to steer and operate the brakes. The vehi-
cle’s wheels, drive train, axles, steering and brakes must be in good condi-
tion.
Towing eyelets
If towing is necessary, we recommend having your vehicle towed by your
Lexus dealer or a commercial towing service, using a lift-type truck or a flat
bed truck.
Use a safety chain system for all towing, and abide by all state/provincial
and local laws.
If towing from the rear, the vehicle’s front wheels and axles must be in good
condition. (P. 4 6 5 )
If they are damaged, use a towing dolly or flat bed truck.

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When trouble arises
467
5-1. Essential information
If you think something is wrong
If you notice any of the following symptoms, your vehicle probably needs
adjustment or repair. Contact your Lexus dealer as soon as possible.
■Visible symptoms
●Fluid leaks under the vehicle
(Water dripping from the air conditioning after use is normal.)
●Flat-looking tires or uneven tire wear
●Engine coolant temperature gauge needle continually points
higher than normal
■Audible symptoms
●Changes in exhaust sound
●Excessive tire squeal when cornering
●Strange noises related to the suspension system
●Pinging or other noises related to the engine
■Operational symptoms
●Engine missing, stumbling or running rough
●Appreciable loss of power
●Vehicle pulls heavily to one side when braking
●Vehicle pulls heavily to one side when driving on a level road
●Loss of brake effectiveness, spongy feeling, pedal almost touches
the floor

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5-2. Steps to take in an emergency
CAUTION
■Using the tire jack
Improper use of the tire jack may lead to death or serious injuries due to the vehicle
suddenly falling off the jack.
●Do not use the tire jack for any purpose other than replacing tires or installing and
removing tire chains.
●Only use the tire jack that comes with this vehicle for replacing a flat tire.
Do not use it on other vehicles, and do not use other tire jacks for replacing tires
on this vehicle.
●Always check that the tire jack is securely set to the jack point.
●Do not put any part of your body under the vehicle while it is supported by a jack.
●Do not start or run the engine while your vehicle is supported by the jack.
●Do not raise the vehicle while someone is in it.
●When raising the vehicle, do not put an object on or under the jack.
●Do not raise the vehicle to a height greater than that required to replace the tire.
●Use a jack stand if it is necessary to get under the vehicle.
Take particular care when lowering the vehicle to ensure that no one working on or
near the vehicle may be injured.
■Replacing a flat tire
Observe the following precautions to reduce the risk of death or serious injury.
●Never use oil or grease on the wheel bolts or wheel nuts.
Oil and grease may cause the wheel nuts to be excessively tightened, leading to
bolt or disc wheel damage. In addition, the oil or grease can cause the wheel nuts
to loosen and the wheel may fall off, causing a serious accident. Remove any oil or
grease from the wheel bolts or wheel nuts.
●Have the wheel nuts tightened with a torque wrench to 76 ft•lbf (103 N•m, 10.5
kgf•m) as soon as possible after changing wheels.
Failure to follow these precautions could cause the nuts to loosen and the wheels
may fall off, which could lead to an accident causing death or serious injury.

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Alphabetical index
Cruise control
Cruise control ....................................... 175
Dynamic radar cruise control ....... 179
Cup holder ..............................................336
Curtain shield airbags............................ 93
Customizable features ...................... 550
Daytime running light system ........... 166
Defogger
Rear window ........................................ 228
Side mirror ............................................ 228
Dimension ................................................520
Dinghy towing ............................... 215, 216
Display
Dynamic radar cruise control ....... 179
Satellite switch mode ....................... 342
Trip information ..................................... 161
Warning message............................ 480
Do-it-yourself maintenance .............394
Door courtesy lights
Door courtesy lights......................... 329
Wattage.................................................. 534
Door pockets......................................... 338
Doors
Door lock................................ 28, 40, 43
Door windows ....................................... 76
Side mirrors ..............................................73
Driver's seat belt reminder light ..... 473
Driving
Correct posture ...................................... 91
Procedures ............................................. 124
Driving position memory ...................... 53Electric power steering........................196
Electronic key
If the electronic key does not
operate properly............................505
Emergency, in case of
If the engine will not start .................501
If the shift lever cannot be
shifted from P................................... 503
If the vehicle has a discharged
battery ................................................. 509
If the warning buzzer sounds........ 471
If the warning light turns on............ 471
If a warning message is
displayed ............................................ 480
If you have a flat tire .........................492
If you lose your keys ........................ 504
If you think something is
wrong ...................................................467
If the electronic key does not
operate properly............................505
If your vehicle becomes stuck ...... 515
If your vehicle has to be
stopped in an emergency ........... 517
If your vehicle needs to be
towed ..................................................... 461
If your vehicle overheats.................. 512
Emergency flashers
Switch ...................................................... 460
Engine
Compartment ..................................... 400
Engine switch ........................................ 134
Hood ........................................................397
How to start the engine ................... 134
Identification number ........................ 521
If the engine will not start .................501
Ignition switch ....................................... 134
Overheating .......................................... 512
D
E

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Alphabetical index
Tachometer
Tacho indicator...................................... 151
Tachometer ............................................. 151
Tail lights
Switch ....................................................... 165
Talk switch .............................................. 303
Telephone switch ..................................302
Theft deterrent system
Alarm ..........................................................88
Engine immobilizer system ............. 86
Theft prevention labels ..........................90
Tire inflation pressure ......................... 425
Tire information
Glossary................................................. 543
Size ...........................................................540
Tire identification number .............540
Uniform tire quality grading ...........541
Tires
Chains .......................................................210
Checking ................................................. 414
If you have a flat tire .......................... 492
Inflation pressure................................ 425
Inflation pressure sensor..................416
Information............................................538
Replacing ............................................... 492
Rotating tires .......................................... 414
Size ........................................................... 529
Snow tires ................................................210
Tools ........................................................... 492
Total load capacity ...............................209Towing
Dinghy towing ............................ 215, 216
Emergency towing ............................. 461
Trailer towing ........................................ 214
TRAC ..........................................................196
Traction control.......................................196
Transmission shift switches.................142
Trip meter ................................................... 151
Trunk
Extending trunk space.....................357
Opener ...................................................... 47
Trunk light
Trunk light ................................................ 48
Wattage ................................................. 534
Turn signal lights
Replacing light bulbs ....................... 452
Switch ........................................................ 147
Wattage ................................................. 534
Vanity lights
Vanity lights.......................................... 340
Wattage ................................................. 534
Vanity mirrors ........................................ 340
VDIM...........................................................196
Vehicle dynamics integrated
management .........................................196
Vehicle identification number...........521
Vehicle stability control .......................196
Ventilators ................................................ 351
Voice command switch ..................... 302
VSC .............................................................196T
V

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What to do if...
What to do if...
A tire puncturesP. 4 9 2If you have a flat tire
The engine does not start
P. 5 0 1If the engine will not start
P. 8 6Engine immobilizer system
P. 5 0 5If the vehicle battery is discharged
The shift lever cannot be
moved out of PP. 5 0 3If the shift lever cannot be shifted
from P
The engine coolant temperature
gauge enters the red zone
Steam can be seen coming
from under the hood
P. 5 1 2If your vehicle overheats
The key is lostP. 5 0 4If you lose your keys
The battery runs outP. 5 0 9If the vehicle battery is discharged
The doors cannot be lockedP. 4 3Doors
The horn begins to soundP. 8 8Alarm
The vehicle is stuck in mud or
sandP. 5 1 5If the vehicle becomes stuck

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GAS STATION INFORMATION
Auxiliary catch lever
P. 3 9 7Trunk opener
P. 4 7Fuel filler door
P. 8 3
Hood lock release lever
P. 3 9 7Fuel filler door opener
P. 8 3Tire inflation pressure
P. 5 2 9
Fuel tank capacity17.2 gal. (65 L, 14.3 Imp. gal.)
Fuel typeUnleaded gasoline only P. 84, 522
Cold tire inflation
pressureP. 5 2 9
Engine oil capacity
(Drain and refill)
qt. (L, Imp. qt.)
IS250 IS250
(2WD models) (AWD models) IS350
Without filter 6.2 (5.9
, 5.2)6.3 (6.0, 5.3) 6.2 (5.9, 5.2)
With filter 6.6 (6.3, 5.5) 6.8 (6.4, 5.7) 6.6 (6.3, 5.5)
Engine oil typeToyota Genuine Motor Oil or equivalent
Oil grade: ILSAC multigrade engine oil P. 523