2003 Lexus GS300 fuse

SECTION 6 ± 4
SERVICE PROCEDURES AND
SPECIFICATIONS
Electrical components
Specifications 292. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking battery condition296 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Battery recharging precautions298 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking and replacing the blade type fuses299 . . . . . . . . . . . . . . . .
Checking the cartridge type fuses301 . . . . . . . . . . . . . . . . . . . . . . . . . .
Adding washer fluid303 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking the headlight aim303 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Replacing light bulbs309 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SPECIFICATIONS
± FUSE LOCATION
64G004b

1Engine compartment
2Passenger's side kick panel
3Driver's side kick panel
4Engine compartment
± FUSES
64G015b

Driver's side kick panel
64G014b

Passenger's side kick panel

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

CHECKING AND REPLACING THE
BLADE TYPE FUSES
64G006a

Driver's side kick panel
64G017

Passenger's side kick panel
64G005±2

Engine compartment 1Spare fuses 2Pull±out tool
64G027

Engine compartment
1. Turn the ignition switch off and open the fuse box lid.
Determine which fuse may be causing the problem. The lid of
the fuse box shows the name of the circuit for each fuse.

64L013
2. Make sure the inoperative component is turned off. Pull
the suspected fuse straight out with the pull±out tool and
check it. If it has blown, push a new fuse into the clips.
64G008a

Good
Blown
a. Look carefully at the fuse. If the thin wire is broken, the fuse
has blown. If you are not sure or if it is too dark to see, try
replacing the suspected fuse with one of the same value that
you know is good.
b. Install only a fuse with the amperage rating designated on
the fuse box lid.
If you do not have a spare fuse, in an emergency you can pull
out the ºCIGº, ºRAD NO.1º or ºOBDº fuse, which may be
dispensable for normal driving, and use it if its amperage rating
is the same.
If you cannot use one of the same amperage, use one lower
than, but as close as possible to, the amperage. If the
amperage is lower than that specified, the fuse might blow out
again but this does not indicate anything wrong. Be sure to get
the correct fuse as soon as possible and return the substitute
to its original clips.

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
64G019a

Engine compartment

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.