fuel pressure Lexus IS250 2006 Do-it-yourself maintenance / LEXUS 2006 IS350/250 THROUGH APRIL 2006 PROD. OWNER'S MANUAL (OM53508U)

Tires
●Rotation
● Replacement
● Inflation pressure
● Information
P. 275
P. 348
P. 378
P. 387
: If equipped
Tail lights P. 113
Side marker lights P. 113
Trunk P. 19
Rear window defogger P. 170
Doors P. 15
Fuel filler door P. 47
Turn signal lights P. 98

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4-1. Maintenance and care
Cleaning and protecting the vehicle exterior
■Automatic car washes
●Fold the mirrors back before washing the vehicle.
●Brushes used in automatic car washes may scratch the vehicle surface and
harm your vehicle’s paint.
■High pressure automatic car washes
Do not allow the nozzles of the car wash to come within close proximity of the win-
dows. Before entering an automatic car wash, check that the fuel filler door on your
vehicle is closed properly.
■Aluminum wheels
Remove any dirt immediately by using a neutral detergent. Do not use hard brushes
or abrasive cleaners. Do not use strong or harsh chemical cleaners. Use the same
mild detergent and wax as used on the point.
■Bumpers and side moldings
Do not scrub with abrasive cleaners.
Perform the following to protect the vehicle and maintain it in prime condi-
tion.
● Working from top to bottom, liber ally apply water to the vehicle
body, wheel wells and underside of the vehicle to remove any dirt
and dust.
Wash the vehicle body using a sponge or soft cloth, such as a
chamois.
● For hard-to-remove marks, use car wash soap and rinse thor-
oughly with water.
● Wipe away any water.
● Wax the vehicle when the waterproof coating deteriorates.
If water does not bead on a clean surface, apply wax when the vehicle
body is cool.

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4-3. Do-it-yourself maintenance
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.
■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 easi ly, 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.
ItemsPa r t s a n d t o o l s
Engine oil level ( P. 2 6 4 )
• “Toyota Genuine Motor Oil” or
equivalent
• Rag or paper towel, funnel (used only for adding engine oil)
Fuses ( P. 2 9 5 )• Fuse with same amperage rating as
original
Tire inflation pressure ( P. 2 8 5 )• Tire pressure gauge
• Compressed air source
Headlight aim ( P. 3 0 9 )• Phillips-head screwdriver
Radiator and condenser (P. 2 7 0 )
Wa s h e r f l u i d ( P. 2 74 )
• Water washer fluid containing anti-
freeze (for winter use)
•Funnel

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4-3. Do-it-yourself maintenance
4
Maintenance and care
■Effects of incorrect tire inflation pressure
Driving with incorrect tire pressure may result in the following:
●Reduced fuel efficiency
●Reduced driving comfort and tire life
●Reduced safety
●Damage to the drive train
If a tire needs frequent refilling, have it checked by your Lexus dealer.
■Instructions for checking tire pressure
When checking tire inflation pressure, observe the following:
●Check only when the tires are cold.
If your vehicle has been parked for at least 3 hours and has not been driven for
more than 1 mile or 1.5 km, you will get an accurate cold tire inflation pressure
reading.
●Always use a tire pressure gauge.
The appearance of the tire can be misleadi ng. In addition, tire inflation pressures
that are even just a few pounds off can degrade ride and handling.
●Do not bleed or reduce tire inflation pressure after driving. It is normal for the
tire inflation pressure to be higher after driving.
●Never exceed the vehicle capacity weight.
Passengers and luggage weight should be placed so that the vehicle is bal-
anced.

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5-2. Steps to take in an emergency
CAUTION
■Maintenance of the tires
Each tire, including the spare (if provided), should be checked monthly when cold
and inflated to the inflation pressure re commended by the vehicle manufacturer on
the vehicle placard or tire inflation pressu re label (tire and load information label).
(If your vehicle has tires of a different size than the size indicated on the vehicle
placard or tire inflation pressure label [tire and load information label], you should
determine the proper tire inflation pressure for those tires.)
As an added safety feature, your vehicl e has been equipped with a tire pressure
monitoring system (TPMS-tire pressure warning system) that illuminates a low tire
pressure telltale (low tire pressure warning light) when one or more of your tires is
significantly under-inflated. Accordingly, when the low tire pressure telltale (low tire
pressure warning light) illuminates, you shou ld stop and check your tires as soon as
possible, and inflate them to the proper pressure. Driving on a significantly under-
inflated tire causes the tire to overheat and can lead to tire failure. Under-inflation
also reduces fuel efficiency and tire tread life, and may affect the vehicle's handling
and stopping ability.
Please note that the TPMS (tire pressure warning system) is not a substitute for
proper tire maintenance, and it is the driv er's responsibility to maintain correct tire
pressure, even if under-inflation has not reached the level to trigger illumination of
the TPMS low tire pressure telltale (low tire pressure warning light).

392
6-1. Specifications
Warning: The temperature grades for this tire are established for a tire that
is properly inflated and not overloaded.
Excessive speed, underinflation, or excessive loading, either separately or in
combination, can cause heat buildup and possible tire failure.
Glossary of tire terminology
Tire related termMeaning
Accessory weight
The combined weight (in excess of those standard
items which may be replaced) of automatic transmis-
sion, power steering, power brakes, power windows,
power seats, radio and heater, to the extent that these
items are available as factory-installed equipment
(whether installed or not)
Cold tire inflation pres-
sureTire pressure when the vehicle has been parked for
three hours or more, or has not been driven more
than 1 mile or 1.5 km under that condition
Curb weight
The weight of a motor vehicle with standard equip-
ment, including the maximum capacity of fuel, oil and
coolant, and if so equipp ed, air conditioning and
additional weight optional engine
Maximum inflation pres-
sureThe maximum cold inflated pressure to which a tire
may be inflated, shown on the sidewall of the tire
Maximum loaded vehicle
weight
The sum of:
(a) Curb weight
(b) Accessory weight
(c) Vehicle capacity weight
(d) Production options weight
Normal occupant weight150 lb. (68 kg) times the number of occupants speci-
fied in the second column of Table 1
* that follows

411
Alphabetical index
TrunkExtending a space ............................. 227
Opener........................................................ 19
Trunk light Trunk light ................................................ 20
Wattage ................................................. 383
Turn signal lights Replacing light bulbs .........................310
Switch ......................................................... 98
Wattage ................................................. 383
Vanity lights Vanity lights ............................................ 212
Wattage ................................................. 383
Vanity mirrors ............................................. 212
VDIM (Vehicle dynamics integrated managem ent)................. 139
Vehicle dynamics integrated management (VDIM) ....................... 139
Vehicle identification number .......... 371
Vehicle stability control (VSC) ........ 139
Ventilators................................................222
VSC (Vehicle stability control) ........ 139
Warning buzzers Brake system ....................................... 329
Downshifting........................................... 95
Open door ............................................ 331
Seat belt reminder ............................ 330
Warning lights Anti-lock brake system (ABS) ... 330
Brake assist system .......................... 330
Brake system ....................................... 329
Charging system ............................... 330
Electric power steering warning light ..................................... 330 Electronic engine control
system ................................................. 330
Low fuel level ........................................ 331
Low tire pressure warning light ......................................................... 331
Master warning light.......................... 331
Open door ............................................. 331
Pre-collision system......................... 330
Pretensioners ...................................... 330
Seat belt reminder light.................... 331
SRS airbags.......................................... 330
Warning messages Anti-lock brake system (ABS) ... 338
AWD system ...................................... 335
Brake assist (BA) .............................. 338
Dynamic radar cruise control........... 335, 339, 339
Engine oil level ....................................339
Engine oil maintenance ..................339
Engine oil pressure ...........................334
Hill-start assist control .................... 338
Hood ........................................................339
Lexus parking assist sensor ...................................... 335, 339
Moon roof .............................................339
Open door ............................................339
Parking brake ......................................339
Pre-collision system............. 335, 339
Smart access system with push-button start ............................345
Steering lock........................................ 335
Tire inflation pressure warning system................... 335, 339
Traction control (TRC) .................. 338
Trunk ........................................................339
Vehicle stability control (VSC).................................................. 338
V
W

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What to do if...
The warning light or indicator
light comes onP. 3 2 9If the warning light turns on
■Warning lights
or orv
P. 3 2 9P. 3 3 0
P. 3 3 1
or
P. 3 3 0P. 3 3 1
P. 3 3 1P. 3 3 1
P. 3 3 0P. 3 3 0
P. 3 3 1P. 3 3 0
P. 3 3 0P. 3 3 1
Brake system warning lightMalfunction indicator lamp
“ABS” warning lightDriver’s seat belt reminder
light
Front passenger’s seat belt
reminder light
Low fuel level warning lightMaster warning light
SRS warning lightElectric power steering warning
light
Open door warning lightPre-collision safety system
warning light
Charging system warning
lightLow tire pressure warning
light
The warning message is dis-
playedP. 3 3 4If the warning message is displayed

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GAS STATION INFORMATION
Auxiliary catch leverP. 2 5 8Trunk openerP. 1 9Fuel filler door P. 4 7
Hood lock release lever P. 2 5 8Fuel filler door opener P. 4 7Tire inflation pressureP. 3 7 8
Fuel tank capacity17.2 gal. (65L, 14.3 lmp.gal.)
Fuel typeUnleaded gasoline only P. 48, 372
Cold tire inflation
pressureP. 3 7 8
Engine oil capacity
(Drain and refill)
qt. (L, Imp.qt.)
IS250 IS250
(2WD models) (AWD models) IS350
With filler 6.6 (6.3, 5.5) 6.8 (6.4, 5.7) 6.6 (6.3, 5.5)
Without filler 6.2 (5.9
, 5.2)6.3 (6.0, 5.3) 6.2 (5.9, 5.2)
Engine oil type
Toyota Genuine Motor Oil or equivalent
Oil grade: ILSAC multigrade engine oil P. 373
Recommended oil viscosity: SAE-5W-30