Fuses and relays Mercedes Gelandewagen (W463; 1989–2006)

The Geländewagen or Mercedes-Benz G-Class is a legendary SUV produced at the Steyr-Puch (now Magna Steyr) plant in Graz, Austria. Developed initially as a military vehicle, a civilian version was introduced in 1979. It is one of the few vehicles equipped with three fully locking differentials. In this article, we take a detailed look at the fuse box diagrams and relay layouts for the Mercedes-Benz G-Class (chassis code W463) produced from 1989 through 2006, including the facelifted 1998–2006 model years.

Here you will find the locations and photos of the fuse and relay distribution centers. The fuses responsible for the “Cigarette Lighter” and “Fuel Pump” are highlighted in bold.

General layout of the fuse and relay blocks.

In the Passenger Compartment

Three fuse and relay blocks are located here to protect the vehicle’s electrical circuits.

Fuse Block No. 1

The first fuse box is located on the driver’s side at the end of the instrument panel (dashboard), behind the side access panel.

General view of the upper panel.

Diagram
No.	A	Description
A	15	Spare
B	10	ABS control module (Terminal 87)
C		Spare
D	5	Auxiliary equipment switch, brake light switch
E		Spare
F	20	Heated rear seats
G	20	A/C condenser fan
H	30
21	30	Front left door control module
22	30	Front right door control module
23	5	Rear reading lamp
24	20	Windshield wiper de-icer
25	10	Heated driver seat
26	7.5	Voltage converter
27	30	Driver seat adjustment control module
28	30	Auxiliary equipment connector
29		Spare
30	40	Air conditioning system
31	20	Electronic ignition switch (EIS/EZS)
32	30	Rear left door control module
33	30	Rear right door control module
34	7.5	Cellular phone system
35	30	Heater blower motor
36	15	Spare
37	30	Differential lock vacuum pump
38	40	Power passenger seat control module
39	7.5	Transfer case control module
40		Spare
41	7.5	Air conditioning control unit
42	15	Instrument cluster

Fuse Block No. 2

The second interior fuse box is located on the front passenger side, under the instrument panel.

Example layout shown below.

Diagram
No.	Relay
I	Horn relay
K	Circuit 87 relay
L	Windshield wiper speed control relay
M	Circuit 15R relay
N	Circuit 15 relay
O	Secondary air injection pump relay
P	Circuit 15 relay
Q	Wiper control relay
R	Circuit 87 relay
S	Starter relay
No.	A	Description
43a	15	Dual-tone horn
43b	15
44	5	Cellular phone system
45	10	Airbag system (SRS)
46	20	Windshield wiper
47	15	Glove compartment illumination, Mercedes-Benz G-Class W463 cigarette lighter fuse
48	15	Ignition coil
49	10	Airbag system (SRS)
50	5	Spare
51	7.5	Air conditioning system, automatic transmission control module
52	15	Starter switch circuit
53	15	Engine cooling fan
54	15	Heater blower fan
55	7.5	Automatic transmission control module (TCM)
56	7.5	Electronic selector lever module (ESM)
57	5	Electronic ignition switch (EIS/EZS)
58	40	Auxiliary fuse block (8-pole)
59	50	ABS return pump
60	40	ABS hydraulic unit / modulator
61	15	Spare
62	5	Level control system (LDS)
63	5	Spare
64	10	Audio system
65	40	Secondary air injection pump

Fuse Block No. 3

The third fuse block is located at the rear of the center console. Unscrew the retaining screws (1) and remove the cover (2).

Diagram
No.	Relay
A	Fuel pump relay (Mercedes-Benz W463)
B	Circuit 15R relay 2
C	Spare
D
E	Heated rear window relay
F	Circuit 15R relay 1
G	Fuel filler flap actuator relay 1/2
H
K1	Brake light relay
K2	Fuel pump relay
K3	ABS system relay
K4	Starter / cooling fan relay
K5	Circuit 15R relay
No.	A	Description
1	30	Circuit 15R power connector
2	30
3	5	TV tuner / receiver
4	15	Fuel pump module (Gelandewagen fuel pump fuse)
5	20	Spare
6	20
7	20
8	7.5	Power antenna, anti-theft alarm siren, tilt sensor
9	25	Overhead control panel module
10	20	Heated rear window
11	20	Spare
12	15
13	20	Auxiliary water pump (Circuit 15)
14	15	Rear wiper motor
15	10	Fuel filler flap locking actuator
16	5	Voice control system (Linguatronic)
17	20	Trailer recognition control module
18	20	Trailer circuit connector
19	20	Auxiliary water pump (Circuit 30)
20	10	Tailgate / rear door lock actuator

In the Trunk

The relay panel is located on the left side, behind the interior side trim panel.