2003 Lexus GS300 lights

No.FUSEAMPERECIRCUIT
1 WASHER20Windshield washer
2 FR FOG15Fog lights
3 TAIL10Tail lights, Side marker lights,
License plate lights,
Parking lights
4 GAUGE10Back±up lights, Gauges and
meters, service reminder
indicators and buzzers
5 FUEL OPN10Fuel filler door opener
6 PANEL7.5Emergency flashers,
Headlight cleaner
7 HEATER10Air conditioning
8 SRS±B5Gauges and meters, service
reminder indicators and
warning buzzers
9 D P/SEAT30Power seat system
10 RADIO
NO.215Audio, Shift lock system
11 WIPER25Windshield wipers
12 OBD7.5On±board diagnosis
13 STOP15Stop lights,
Anti±lock brake system,
Traction control system
No.FUSEAMPERECIRCUIT
14 CIG15Cigarette lighter, Power outlet
15 ECU±IG15Power window, Door lock
system, Wireless remote
control, Theft deterrent system
16 STARTER5Starting system
17 IGN5
Multiport fuel injection
system/sequential multiport fuel
injection system, SRS,
Anti±lock brake system,
Vehicle skid control system,
Cruise control system
18 D RR
DOOR20Power window system,
Door lock system,
Wireless remote control
19 RR FOG10No circuit
20 MIR HTR10Outside rear view mirror
21 S/ROOF25Moon roof
22 ECU±B320Power window system,
Door lock system,
Wireless remote control
23 P P/SEAT30Power seat system,
Tilt and telescopic steering
24 DOME10Interior lights, Personal lights,
Vanity lights, Trunk light, Clock
25 SEAT HTR20Seat heater

No.FUSEAMPERECIRCUIT
26 4WS25No circuit
27 TV15No circuit
28 ECU±B210Power seat system
29 P RR
DOOR20Power window system,
Door lock system,
Wireless remote control
30 ECU±B120
Power window system,
Door lock system,
Wireless remote control,
Theft deterrent system, Trunk
lid opener, Interior lights,
Personal lights, Clock,
Headlight cleaner
31 P FR
DOOR20Power window system,
Door lock system,
Wireless remote control
32 D FR
DOOR20Power window system, Door
lock system, Wireless remote
control
33 HORN10Horn
34 ETCS15Electronic throttle control
system
35 AM215Starting system, Multiport fuel
injection system/sequential
multiport fuel injection system
36 TEL15No circuit
37 TURN±HAZ10Turn signal lights
No.FUSEAMPERECIRCUIT
38 EFI25
Multiport fuel injection
system/sequential multiport fuel
injection system, Emission
control system
39 ALT±S5Charging system
40 RADIO
NO.130Audio
41 DRL NO.230Daytime running light system
42 DRL NO.130Daytime running light system
43 H±LP L
LW R15Left±hand headlight (low beam)
44 H±LP R
LW R15Right±hand headlight (low
beam)
45 H±LP R
UPR15Right±hand headlight (high
beam)
46 H±LP L
UPR15Left±hand headlight (high
beam)
SPARESpare fuse

64g104

Good
Blown
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.
CAUTION
Always use a genuine Lexus fuse or equivalent for
replacement. Never install an ordinary wire ± even for
a temporary fix. This may cause extensive damage and
possibly a fire.
NOTICE
Before replacing the fuses, have the cause of electrical
overload determined and repaired by your Lexus dealer.

REPLACING LIGHT BULBS
The illustrations 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.
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 difference 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.

64G059
Light Bulbs Bulb No. W Type
1 Front personal lights ±±± 8 F
2 Vanity lights ±±± 3 E
3 Front interior lights ±±± 8 E
4 Rear personal lights ±±± 5 F
5 Door courtesy lights 194 3.8 D
6 Foot lights ±±± 1.4 D
7 Glove box light ±±± 1.2 D
A: HB3 halogen bulbs
B: D2R discharge bulbs
C: HB4 halogen bulbs
D: Wedge base bulbs
E: Double end bulbs
F: Single end bulbs