Light Lexus IS300 2003 Basic Functions / LEXUS 2003 IS300 OWNER'S MANUAL (OM53439U)

ELECTRICAL COMPONENTS
347
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 immobiliser 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
2003 IS300 from Aug. '02 Prod. (OM53439U)

ELECTRICAL COMPONENTS
348
CHECKING BATTERY CONDITION
Precautions
CAUTION
BATTERY PRECAUTIONS
The battery produces flammable and explosive
hydrogen gas.
Do not cause a spark by contacting the battery
terminals with tools.
 Do not smoke or light a match near the battery.
The electrolyte contains poisonous and corrosive
sulfuric acid.
 Avoid contact with eyes, skin or clothes.
 Never inhale or swallow electrolyte.
 Wear protective safety glasses when working near
the battery.
 Keep children away from the battery.
EMERGENCY MEASURES
 If electrolyte gets in your eyes, flush your eyes with
clean water for at l east 15 minutes and get immediate
medical attention. If possible, continue to apply
water with a sponge or cloth while traveling to the
medical office.
 If electrolyte gets on your skin, thoroughly wash the
contacted area. If you feel a pain or burn, get medical
attention immediately.
 If electrolyte gets on your clothes, there is a
possibility of its soaking through to your skin, so
immediately take off the exposed clothing and follow
the procedure above, if necessary.
 If you accidentally swallow electrolyte, drink a large
quantity of water or milk. Follow with milk of
magnesia, beaten raw egg or vegetable oil. Then go
immediately for emergency help.
Warning: Battery posts, terminals and related
accessories contain lead and lead compounds,
chemicals known to the State of California to cause
cancer and reproductive harm. Wash hands after
handling.
2003 IS300 from Aug. '02 Prod. (OM53439U)

ELECTRICAL COMPONENTS
353
It is a good idea to purchase a set of spare fuses and keep them
in your vehicle for emergencies.
If the new fuse immediately blows out, there is a problem with
the electrical system. Have your Lexus dealer correct it as
soon as possible.
CAUTION
Never use a fuse with a higher amperage rating, or any
other object, in place of a fuse. This may cause
extensive damage and possibly a fire.
CHECKING THE CARTRIDGE TYPE
FUSES
SV64005

1Good 2Melted
If the headlights or other electrical components do not
work and the blade type fuses are O.K., check the
cartridge type fuses. If any of the cartridge type fuses are
blown, they must be replaced.
If there is an overload in the circuits from the battery, the fuses
are designed to blow before the entire wiring harness is
damaged.
2003 IS300 from Aug. '02 Prod. (OM53439U)

ELECTRICAL COMPONENTS
355
CHECKING THE HEADLIGHT AIM
SV64027

1Vertical movement adjusting bolt 1
2Vertical movement adjusting bolt 2
Before checking the headlight aim:
1. Be sure that the body around the headlight is not deformed.
2. Park the vehicle on a level spot.
3. The driver gets into the driver's seat and puts the vehicle in
a state readying for a driving (with a full tank).
4. Bounce the vehicle several times.
Adjusting the vertical aiming
SV64051
1. Turn the vertical movement adjusting bolt 1 in either
direction. At this time, keep the turning direction and number
of turns in mind.
2003 IS300 from Aug. '02 Prod. (OM53439U)

ELECTRICAL COMPONENTS
356
SB64028
2. Turn the vertical movement adjusting bolt 2 the same
number of turns and in the same direction at step 1.
REPLACING LIGHT BULBS
The illustration on the following pages show the locations of
light bulbs. If it is necessary to replace a bulb, take your vehicle
to your Lexus dealer as soon as possible. Use bulbs with the
bulb numbers and wattage ratings given in the table.
CAUTION
 To prevent burning yourself, do not replace the light
bulbs while they are hot.
 Do not disassemble, repair or take apart the low beam
headlight bulbs, connector, power supply circuits
and rotated components. Or you may be injured by
electric shocks. Call your dealer when the headlights
fail to work or have to be replaced or disposed of.
 Halogen bulbs have pressurized gas inside and
require special handling. They can burst or shatter if
scratched or dropped. Hold a bulb only by its plastic
or metal case. Do not touch the glass part of a bulb
with bare hands.
NOTICE
Only use a bulb of the listed type.
2003 IS300 from Aug. '02 Prod. (OM53439U)

ELECTRICAL COMPONENTS
357
The inside of the lens of exterior lights such as headlights may
temporarily
fog up when the lens becomes wet in the rain or in
a car wash. This is not a problem because the fogging is
caused by the temperature dif ference between the outside and
inside of the lens, just like the windshield fogged up in the rain.
However, if there is a large drop of water on the inside of the
lens, or if there is water pooled inside the light, contact your
Lexus dealer. LIGHT LOCATION
SV64032
Light Bulbs
Bulb No. W Type
1Headlights (High beam) HB3 60 A
2Parking lights 168 5 E
3Headlights (Low beam) D2R 35 B
4Front fog lights ±±± 55 D
5Front turn signal lights ±±± 21 I
6Front side marker lights 168 5 E
2003 IS300 from Aug. '02 Prod. (OM53439U)

ELECTRICAL COMPONENTS
358Sedan
SV64013
Light Bulbs
Bulb No. W Type
1High mounted stop light 921 18 E
2License plate lights 168 5 E
3Tail/stop lights 7443 5/21 E
Rear fog lights 7440 21 E
4Back±up lights7440 21 E
5Rear turn signal lights ±±± 21 G
6Rear side marker lights 168 5 E
7Tail/stop lights 7443 5/21 E
8Trunk light 194 3.8 H SportCross
SV64026
Light Bulbs
Bulb No. W Type
1Tail/stop lights 7443 5/21 E
2Rear side marker lights 168 5 E
3Rear turn signal lights ±±± 21 I
4Back±up lights 921 18 E
5Tail/stop lights7443 5/21 E
Rear fog lights 7440 21 E
6License plate lights 168 5 E
7Luggage compartment light ±±± 5 F
2003 IS300 from Aug. '02 Prod. (OM53439U)

ELECTRICAL COMPONENTS
359
SV64012
Light BulbsBulb No. W Type
1Front personal lights
with moon roof ±±± 10 H
without moon roof ±±± 8 H
2Vanity lights ±±± 3 F
3Glove box light±±± 1.2 F
4Door courtesy lights 194 3.8 E
5Interior light ±±± 8 F A: HB3 halogen bulbs
B: D2R discharge bulbs
C: HB4 halogen bulbs
D: H3 halogen bulbs
E: Wedge base bulbs
F: Double end bulbs
G: Single end bulbs (amber)
H: Single end bulbs
I: Wedge base bulbs (amber)
2003 IS300 from Aug. '02 Prod. (OM53439U)

BODY
367
Waxing your Lexus
Polishing and waxing is recommended to maintain the
original beauty of your Lexus' finish.
Once a month or if the vehicle surface does not repel water
well, apply wax.
1. Always wash and dry the vehicle surface before you begin
waxing, even if you are using a combined cleaner and wax.
2. Use a good quality polish and wax. If the finish has become
extremely weathered, use a car±cleaning polish, followed by
a separate wax. Carefully follow the manufacturer's
instructions and precautions. Be sure to polish and wax the
chrome trim as well as the paint.
3. Wax the vehicle again when water does not bead but
remains on the surface in large patches.
CLEANING THE INTERIOR
CAUTION

Be careful not to splash water or spill liquid on the
floor. This may prevent the side airbags from
activating correctly, resulting in serious injury.

Do not wash the vehicle floor with water, or allow
water to get onto the floor when cleaning the vehicle
interior or exterior. Water may get into audio
components or other electrical components above or
under the floor carpet (or mat) and cause a
malfunction; and it may cause body corrosion.
Leather Interior
The selected leather is used in your Lexus. Due to a leather
product, some parts of leather may be rough, uneven or
scratched originally.
To keep good appearance, we recommend you to clean it
periodically twice a year.
Remove dirt on the leather in the following ways:
1. Wipe it off lightly using a soft cloth (e.g. gauze) dampened
with 5% solution of neutral detergent for wool.
2. Wring water from a clean cloth and thoroughly wipe off all
traces of detergent with it.
3. Wipe off the surface of the leather with a dry soft cloth. Allow
the leather to dry in a ventilated shaded area. Excess of wet
may cause the hardening or shrinking of the leather.
2003 IS300 from Aug. '02 Prod. (OM53439U)

BODY
368
NOTICE

Dirt or sand adhered to the leather may damage thetreated surface and cause it to wear earlier. Removedirt or sand using a vacuum cleaner.

If a stain should fail to come out with a neutraldetergent, apply a cleaner that does not contain anorganic solvent.

Never use organic substances such as benzine,alcohol or gasoline, or alkaline or acid solutions forcleaning the leather as these could causediscoloring.

Use of a nylon brush or synthetic fiber cloth, etc. mayscratch the fine grained surface of the leather.

Mildew may develop on soiled leather upholstery. Beespecially careful to avoid oil spots. Try to keep your
upholstery always clean.

Long exposure to direct sunlight may cause the leather surface to harden and shrink. Keep your
vehicle in a shaded area, especially in the summer.

The interior of your vehicle is apt to heat up on hotsummer days, so avoid placing on the upholsteryitems made of vinyl or plastic or containing wax asthese tend to stick to leather when warm.

Improper cleaning of the leather upholstery couldresult in discoloration or staining.
If you have any questions about the cleaning of your
Lexus, your local Lexus dealer will be pleased to answer
them.
Carpets, Windows and Seat Belts
Begin by vacuuming thoroughly to remove as much dirt as
possible. Several types of foam cleaners are available; some
are in aerosol cans and others are powders or liquids which
you mix with water to produce a foam. To shampoo the
carpets, use a sponge or brush to apply the foam. Rub in
overlapping circles. Do not apply water ± the best results are
obtained by keeping the carpet as dry as possible. Read the
shampoo instructions and follow them closely.
The seat belts may be cleaned with mild soap and water
or with lukewarm water.
Use a cloth or sponge. As you are cleaning, check the belts
for excessive wear, fraying or cuts.
2003 IS300 from Aug. '02 Prod. (OM53439U)