inflation pressure Lexus IS300 2005 Scheduled Maintenance Guide / LEXUS 2005 IS300 OWNER'S MANUAL (OM53489U)

IMPORTANT INFORMATION ABOUT YOUR LEXUS
v
This vehicle should not be modified with non±genuine Lexus
products. Modification with non±genuine Lexus products
could af
fect its performance, safety or durability, and may even
violate governmental regulations. In addition, damage or
performance problems resulting from the modification may not
be covered under warranty.
Spark ignition system of your Lexus
The spark ignition system in your Lexus meets all
requirements of the Canadian Interference±Causing
Equipment Standard.
Installation of a mobile two±way radio system
As the installation of a mobile two±way radio system in your
vehicle could affect electronic systems such as the multiport
fuel injection system/sequential multiport fuel injection system,
cruise control system, anti±lock brake system, SRS airbag
system and seat belt pretensioner system, be sure to check
with your Lexus dealer for precautionary measures or special
instructions regarding installation.
Tires and loading on your Lexus
Underinflated or overinflated tire pressure and the
excess load may result in the deterioration of steering
ability and braking ability, leading to an accident. Check
the tire inflation pressure periodically and be sure to
keep the load limits given in this Owner's Manual. For
details about tire inflation pressure and load limits, see
pages 351 and 274.
Scrapping of your Lexus
The SRS airbag and seat belt pretensioner devices in your
Lexus contain explosive chemicals. If the vehicle is scrapped
with the airbags and seat belt pretensioners left as they are,
this may cause an accident such as fire. Be sure to have the
systems of the SRS airbag and seat belt pretensioner removed
and disposed of by a qualified service shop or by your Lexus
dealer before you scrap your vehicle.
04 06.30

DRIVING TIPS
273
HOW TO SAVE FUEL AND MAKEYOUR VEHICLE LAST LONGER
Improving fuel economy is easy ± just take it easy. It will help
make your vehicle last longer, too. Here are some specific tips
on how to save money on both fuel and repairs:
 Keep your tires inflated at the correct pressure. Check
the pressure every two weeks, or at least once a month. Underinflation causes tire wear and wastes fuel.
 Do not carry unneeded weight in your vehicle. Excess
weight puts a heavier load on the engine, causing greater
fuel consumption.
 Avoid lengthy warm±up idling. Once the engine is
running smoothly, begin driving ± but gently. Remember,
however, that on cold winter days this may take a little longer.
 Accelerate slowly and smoothly. Avoid jackrabbit starts.
 Avoid long engine idling. If you have a long wait and you
are not in traffic, it is better to turn off the engine and start again later.
 Avoid engine over±revving. Use a gear position suitable
for the road on which you are traveling.
 Avoid continuous speeding up and slowing down.
Stop±and±go driving wastes fuel. 
Avoid unnecessary stopping and braking. Maintain a
steady pace. Try to time the traffic signals so you only need
to stop as little as possible or take advantage of through
streets to avoid traffic lights. Keep a proper distance from
other vehicles to avoid sudden braking. This will also reduce wear on your brakes.
 Avoid heavy traffic or traffic jams whenever possible.
 Do not rest your foot on the brake pedal. This causes
premature wear, overheating and poor fuel economy.
 Maintain a moderate speed on highways. The faster you
drive, the greater the fuel consumption. By reducing your
speed, you will cut down on fuel consumption.
 Keep the front wheels in proper alignment. Avoid hitting
the curb and slow down on rough roads. Improper alignment
not only causes faster tire wear but also puts an extra load on the engine, which, in turn, wastes fuel.
 Keep the bottom of your vehicle free from mud, etc. This
not only lessens weight but also helps prevent corrosion.
04 06.30

MAINTENANCE
311
Parking brake
Check that the lever has the proper travel and that, on a safe
incline, your vehicle is held securely with only the parking
brake applied.
Automatic transmission ªParkº mechanism
On a safe incline, check that your vehicle is held securely with
the selector lever in ªPº position and all brakes released.
Vehicle exterior
Items
listed below should be performed from time to time,
unless otherwise specified.
Wheel nuts
When checking the tires, make sure to check the nuts for
looseness. Tighten them if necessary.
Fluid leaks
Check underneath for leaking fuel, oil, water or other fluid after
the vehicle has been parked for a while. If you smell fuel fumes
or notice any leak, have the cause found and corrected
immediately.
Doors and engine hood
Check that all doors, including trunk lid or back door, operate
smoothly and all latches lock securely. Make sure the engine
hood secondary latch secures the hood when the primary latch
is released.
Tire inflation pressure
Check the tire inflation pressure with a gauge every two
weeks, or at least once a month and adjust as shown on
the tire and loading information label. See page 351 for
additional information.
Tire surface
Check the tires carefully for cuts, damage or excessive
wear. See page 368 for additional information.
Tire rotation
Rotate the tires according to the maintenance schedule.
(For scheduled maintenance information, please refer to
the ªOwner's Manual Supplementº or ªScheduled
Maintenanceº.) See page 366 or 367 for additional
information.
04 06.30

SECTION 6 ± 3
341
SERVICE PROCEDURES AND
SPECIFICATIONS
Chassis
Specifications342
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Checking brake fluid 349
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Checking power steering fluid 350
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Checking tire inflation pressure 351
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. . . . . . . . . . . . . . . . . . Tire information
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 354
Types of tires365
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Rotating tires 366
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Checking and replacing tires 368
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Installing snow tires and chains 370
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Replacing wheels 373
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Aluminum wheel precautions 374
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Suspension and chassis 374
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04 06.30

CHASSIS
344
± TIRES AND WHEELS (Type A)
Standard tire:Tire sizeFront
Rear
215/45ZR17
225/45ZR17
Tire inflation pressureRecommended cold tire inflation pressure
Front 230 kPa (2.3 kgf/cm2 or bar, 33 psi)
Rear 240 kPa (2.4 kgf/cm2 or bar, 35 psi)
For sustained high speeds above 160 km/h (100 mph), in
countries where such speeds are permitted by law, add 70 kPa
(0.8 kgf/cm
2, 0.7 bar, 10 psi) to the front tires and rear tires, but
never exceed the maximum cold tire pressure molded on the tire
sidewall.
Wheel size
Front
Rear
17 x 7 JJ
17 x 7 1/2 JJ
Wheel nut torque103 N´m (10.5 kgf´m, 76 ft´lbf.)
Spare tire:
Tire size
215/45ZR17
Tire inflation pressureRecommended cold tire inflation pressure
240 kPa (2.4 kgf/cm2 or bar, 35 psi)
04 06.30

CHASSIS
345
Wheel size17 x 7 JJ
Wheel nut torque103 N´m (10.5 kgf´m, 76 ft´lbf.)
NOTE:
For complete information on tires (e.g. replacing tires or replacing wh\
eels), see ªChecking tire inflation pressureº
through ªAluminum wheel precautionsº on page 351 through 374.
04 06.30

CHASSIS
346
± TIRES AND WHEELS (Type B)Tire size
215/45ZR17
Tire inflation pressure
Recommended cold tire inflation pressure
Front 230 kPa (2.3 kgf/cm2 or bar, 33 psi)
Rear 230 kPa (2.3 kgf/cm2 or bar, 33 psi)
For sustained high speeds above 160 km/h (100 mph), in
countries where such speeds are permitted by law, add 70 kPa
(0.8 kgf/cm
2, 0.7 bar, 10 psi) to the front tires and rear tires, but
never exceed the maximum cold tire pressure molded on the tire
sidewall.
Wheel size17 x 7 JJ
Wheel nut torque103 N´m (10.5 kgf´m, 76 ft´lbf.)
NOTE:
For complete information on tires (e.g. replacing tires or replacing wh\
eels), see ªChecking tire inflation pressureº
through ªAluminum wheel precautionsº on page 351 through 374.
04 06.30

CHASSIS
347
± TIRES AND WHEELS (Type C)
Standard tire:Tire size
P205/55R16 89V
Tire inflation pressureRecommended cold tire inflation pressure
Front 230 kPa (2.3 kgf/cm2 or bar, 33 psi)
Rear 230 kPa (2.3 kgf/cm2 or bar, 33 psi)
For sustained high speeds above 160 km/h (100 mph), in
countries where such speeds are permitted by law, add the tire
pressure given below to the front tires and rear tires, but never
exceed the maximum cold tire pressure molded on the tire
sidewall.
Sedan 70 kPa (0.8 kgf/cm
2, 0.7 bar, 10 psi)
SportCross Front: 70 kPa (0.8 kgf/cm
2, 0.7 bar, 10 psi)
Rear: 90 kPa (0.9 kgf/cm2, 0.9 bar, 15 psi)
Wheel size16 x 6 1/2JJ
Wheel nut torque103 N´m (10.5 kgf´m, 76 ft´lbf.)
Compact spare tire (IS300 sold in Canada only):
Tire size
T125/70D17 98M
Tire inflation pressure420 kPa (4.2 kgf/cm2 or bar, 60 psi)
04 06.30

CHASSIS
348
Wheel size17 x 4T
Wheel nut torque103 N´m (10.5 kgf´m, 76 ft´lbf.)
NOTE:
For complete information on tires (e.g. replacing tires or replacing wh\
eels), see ªChecking tire inflation pressureº
through ªAluminum wheel precautionsº on page 351 through 374.
04 06.30

CHASSIS
351
CAUTION
The reservoir may be hot so be careful not to burn
yourself.
NOTICE
Avoid overfilling, or the power steering could bedamaged.
When adding the power steering fluid, avoid spillingit. The generator under the power steering reservoircould be damaged if fluid is spilled on it.
CHECKING TIRE INFLATION PRESSURE
SV61010a
The recommended cold tire inflation pressure, tire
size and the combined weight of occupants and
cargo (vehicle capacity weight) are described on the
tire and loading information label.
04 06.30