2004 Lexus IS300 ESP

IN CASE OF AN EMERGENCY
287
Compact spare tire (Some models)
SV64025
The compact spare tire is designed for temporary
emergency use only.
The compact spare tire is identified by the distinctive
wheel design and color and special wording
ºTEMPORARY USE ONLYº molded into the side wall of
the tire.
To keep the compact spare tire noticeable, do not hide
the wheel by a wheel cover or such.
The compact spare tire saves space in your luggage
compartment, and its lighter weight helps to improve fuel
economy and permits easier installation in case of a flat
tire. The compact spare tire can be used many times, if
necessary. It has tread life of up to 4800 km (3000 miles)
depending on road conditions and your driving habits.
When tread wear indicators appear on the tire, replace
the tire. (See ºChecking and replacing tiresº on page
365.)
CAUTION

The compact spare tire was designed especially
for your Lexus. Do not use it on any other
vehicle.
 Do not use more than one compact spare tire at
the same time.
 The pressure for the compact spare tire must be
420 Kpa (4.2 kgf/cm
2
or bar, 60 psi).
 Do not exceed 80 km/h (50 mph) when driving
with the compact spare tire.
 The standard tire should be repaired and
reinstalled as soon as possible.
 Avoid sudden acceleration, sudden
deceleration and sharp turns with the compact
spare tire.
03 07.09

IN CASE OF AN EMERGENCY
290
Spare tire with turning direction indicators
(Some models)
SV41014
The spare tire with turning direction indicators is of
a uni-directional type and is intended for use on the
passenger side of the vehicle.
Installing the spare tire on the passenger side of the
vehicle will not affect tire performance. However, if the
spare tire is used on the driver side of the vehicle, it
should be used only temporarily and then replaced with
the correct one.
CAUTION
SportCross:
 The spare tire was designed especially for your
Lexus. Do not use it on any other vehicle.
 Do not use more than one spare tire at the same
time.
 Do not exceed 80 km/h (50 mph) when driving
with the spare tire.
 The standard tire should be repaired and
reinstalled as soon as possible.
 Avoid sudden acceleration, sudden
deceleration and sharp turns with the spare tire.
03 07.09

MAINTENANCE
308
MAINTENANCE REQUIREMENTS
Your Lexus vehicle has been designed for fewer maintenance
requirements with longer service intervals to save both your
time and money. However, each regular maintenance as well
as day-to-day care is more important than ever before to
ensure smooth, trouble-free, safe, and economical driving.
It is the owner's responsibility to make sure the specified
maintenance, including general maintenance services, is
performed. Note that both the new vehicle and emission
control system warranties specify that proper maintenance
and care must be performed. See ºOwner's Guideº, ºOwner's
Manual Supplementº or ºWarranty Bookletº for complete
warranty information.
General maintenance
General maintenance items are those day-to-day care
practices that are important to your vehicle for proper
operation. It is the owner's responsibility to ensure that the
general maintenance items are performed regularly.
These checks or inspections can be done either by yourself or
your Lexus dealer.
Scheduled maintenance
The scheduled maintenance items listed in the ºOwner's
Manual Supplement / Scheduled Maintenanceº are those
required to be serviced at regular intervals.
For details of your maintenance schedule, read the ºOwner's
Manual Supplement / Scheduled Maintenanceº.
It is recommended that only genuine Lexus parts be used
for maintenance.
The owner may elect to use non-Lexus supplied parts for
replacement purposes without invalidating the emission
control system warranty. However, use of replacement
parts which are not of equivalent quality may impair the
effectiveness of the emission control systems.
You may also elect to have maintenance, replacement, or
repair of the emission control devices and system
performed by any automotive repair establishment or
individual without invalidating this warranty. See
ºOwner's Guideº, ºOwner's Manual Supplementº or
ºWarranty Bookletº for complete warranty information.
03 07.09

INTRODUCTION
319
DO-IT-YOURSELF SERVICEPRECAUTIONS
If you perform maintenance yourself, be sure to follow the
correct procedure given in this Section.
You should be aware that improper or incomplete servicing
may result in operating problems.
Performing do-it-yourself maintenance during the warranty
period may affect your warranty coverage. Read the separate
Lexus Warranty statement for details and suggestions.
This Section gives instructions only for those items that are
relatively easy for an owner to perform. As explained in
Section 5, there are still a number of items that must be
performed by a qualified technician with special tools.
For information on tools and parts for do-it-yourself
maintenance, see ºParts and toolsº on page 320.
Utmost care should be taken when working on your vehicle to
prevent accidental injury. Here are a few precautions that you
should be especially careful to observe:
CAUTION

When the engine is running, keep hands, clothing,
and tools away from the moving fan and engine drive
belt. (Removing rings, watches, and ties is
advisable.)

Right after driving, the engine compartment - the
engine, radiator, exhaust manifold and power
steering fluid reservoir, etc. - will be hot. So be
careful not to touch them. Oil and other fluids may
also be hot.

Do not smoke, cause sparks or allow open flames
around fuel or the battery. Their fumes are
flammable.

Do not get under your vehicle with just the body jack
supporting it. Always use automotive jack stands or
other solid supports.

Be sure the ignition is off if you work near the electric
cooling fan or radiator grille. With the ignition on, the
electric cooling fan may automatically start to run if
the air conditioning is on and/or if the coolant
temperature is high.

Use eye protection whenever you work on or under
your vehicle where you may be exposed to flying or
falling material, fluid spray, etc.

Be extremely cautious when working on the battery.
It contains poisonous and corrosive sulfuric acid.
03 07.09

CHASSIS
341
- CLUTCH
Pedal freeplay
5 - 15 mm (0.2 - 0.6 in.)
Fluid typeSAE J1703 or FMVSS No. 116 DOT 3
- BRAKESPedal clearance *
199 mm (3.9 in.) Min.
Pedal free play1 - 6 mm (0.04 -0.24 in.)
Brake pad wear limit1.0 mm (0.04 in.)
Parking brake lining wear limit1.0 mm (0.04 in.)
Parking brake adjustment *25 - 8 clicks
Fluid typeSAE J1703 or FMVSS No. 116 DOT 3
*1Minimum pedal clearance when depressed with the force of 490 N (49 kgf,\
110 lbf.) with the engine running
*
2Parking brake adjustment when pulled with the force of 196 N (20 kgf, 4\
4 lbf.)
- STEERING Free play
Less than 30 mm (1.2 in.)
Power steering fluidAutomatic transmission fluid DEXRONII or III
03 07.09

CHASSIS
357
Traction AA, A, B, C - The traction gr ades, from highest
to lowest, are AA, A, B and C, and they represent the
tire's ability to stop on wet pavement as measured under
controlled conditions on specified government test
surfaces of asphalt and concrete. A tire marked C may
have poor traction performance.
Warning: The traction grade assigned to this tire is
based on braking (straight ahead) traction tests and
does not include cornering (turning) traction.
Temperature A, B, C - The temperature grades are A
(the highest), B, and C, representing the tire's resistance
to the generation of heat and its ability to dissipate heat
when tested under controlled conditions on a specified
indoor laboratory test wheel. Sustained high
temperature can cause the material of the tire to
degenerate and reduce tire life, and excessive
temperature can lead to sudden tire failure. The grade
C corresponds to a level of performance which all
passenger car tires must meet under the Federal Motor
Vehicle Safety Standard No. 109. Grades B and A
represent higher levels of performance on the laboratory
test wheel than the minimum required by law.
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.
03 07.09

ELECTRICAL COMPONENTS
377
No.FUSEAMPERECIRCUIT
26 MPX-B10
Power window system,
Air conditioning,
Gauges and meters,
Theft deterrent system
27 P RR P/W20Power window system
28 SRS-B7.5SRS system, Door lock system
29 TV7.5Television
30 OBD7.5On-board diagnosis system
31 IGN7.5
SRS system,
Multiport fuel injection
system/sequential multiport fuel
injection system,
Cruise control system
32 ECU-B120
Theft deterrent system,
Door lock system,
Interior light, Trunk light,
Vanity light, Ignition switch light,
Map light, Door courtesy lights,
Power window system,
Air conditioning,
Gauges and meters
33 ALT-S7.5Charging system
34 ETCS15Electronic throttle control
system
35 AM220
Starting system, SRS system,
Multiport fuel injection
system/sequential multiport fuel
injection system, Cruise control
system
36 HORN10Horn
No.FUSEAMPERECIRCUIT
37 RADIONO.120Audio
38 TURN-HAZ15Turn signal lights
39 EFI25
Multiport fuel injection
system/sequential multiport fuel
injection system,
Emission control system,
Engine immobilizer system
40 DRL NO.230Daytime running light system
41 DRL NO.17.5Daytime running light system
42 H-LP L LW R15Left-hand headlight
(low beam), Fog lights
43 H-LP R LW R15Right-hand headlight
(low beam)
44 ABS27.5Anti-lock brake system
45 SPARESpare fuse
46 SPARESpare fuse
47 SPARESpare fuse
48 H-LP LUPR10Left-hand headlight
(high beam)
49 H-LP R UPR10
Right-hand headlight
(high beam),
Service reminder indicators and
buzzers
03 07.09

BODY
394
PROTECTING YOUR VEHICLEFROM CORROSION
Proper care of your Lexus can help ensure long-term
corrosion prevention.
The most common causes of corrosion to your vehicle
are:

The accumulation of road salt, dirt and moisture in
hard-to-reach areas under the vehicle.

Chipping of paint or undercoating caused by minor
accidents or by stones and gravel.
The following conditions will cause or accelerate
corrosion of your vehicle, so it is important to keep your
vehicle, particularly the underside, as clean as possible
and to repair any damage to paint or protective coatings
as soon as possible.

The presence of road salt or dust control chemicals, salt in
the air near the sea coast, industrial air pollution.

High humidity, especially at temperatures just above
freezing point.

Certain parts of your vehicle are wet or damp for an
extended period of time, even though other parts of the vehicle are dry.

Components of the vehicle which are prevented from
quick-drying due to lack of proper ventilation are exposed to high ambient temperature. To help prevent corrosion on your Lexus, follow these
guidelines:
Keep your vehicle clean by regular washing.
In addition,
observe the following points.

If you drive on salted roads in the winter or if you live near
the ocean, you should hose off the undercarriage at least
once a month to minimize corrosion.

High pressure water or steam is effective for cleaning the
vehicle's underside and wheel housings. Pay particular
attention to these areas as it is difficult to see all the mud and
dirt. It will do more harm than good to simply wet the mud
and debris without removing. The lower edge of doors,
rocker panels and frame members have drain holes which
should not be allowed to clog with dirt as trapped water in these areas can cause corrosion.

Wash the underside of the vehicle thoroughly when winter
is over.
See ºWashing and waxingº on page 395 for more tips.
Check the c ondition of your vehicle's paint and trim. If you
find any chips or scratches in the paint, touch them up
immediately to prevent corrosion from starting. If the chips or
scratches have gone through the bare metal, have a qualified
body shop make the repair.
03 07.09