Audi 100 C3 (1989-1991) – fuse box diagram
Year of production: 1989, 1990, 1991.
Cigarette lighter fuse (power socket) in Audi 100 C3 (1989-1991). is the fuse 4 in the fuse box
Fuses

No. |
[A] |
Description |
1 | 15 | Fog lights, rear fog lights |
2 | 15 | Emergency lights |
3 | 25 | Horn, stop lights |
4 | 15 | Reading lights, trunk, cigar lighter , interior lighting, make-up mirror, on-board computer |
5 | 30 | Unused |
6 | 5 | Side marker, parking lights, right |
7 | 5 | Side marker, parking lights, left |
8 | 10 | Traffic light, turn signal |
9 | 10 | Left traffic light |
10 | 10 | Dipped beam, right headlamp |
11 | 10 | Dipped beam, left headlamp |
12 | 15 | Instrument cluster, reverse lights, cruise control, electronic thermal switch |
13 | 15 | Fuel pump |
14 | 5 | Storage compartment, engine compartment, license plate light |
15 | 25 | Wipers |
16 | 30 | Rear window heating element, exterior mirror heating element |
17 | 30 | Fresh air blower |
18 | 5 | Rear wiper (wagon) |
19 | 10 | Central locking and fuel injection control unit 100, 100 Quattro |
20 | 30 | Heated seats with Memory Seat function |
21 | 25 | Unused |
22 | – | Unused |
23 | 30 | Unused |
24 | 10 | Unused |
25 | 30 | Electric seats with memory, passenger seat |
26 | 5 | Auto-Check, electrically operated mirrors, driver’s seat memory control |
27 | 10 | Ignition control unit 100, 100 Quattro |
28 | 15 | Fuel injection controller II |
29 | – | Spare fuses |

No. | Description |
1 | open |
2 | Radiator fan (stage 2) |
3 | Models 100 – radiator cooling fan bleed Models 200 – radiator cooling fan (stage 1) |
4 | Unused |
5 | Load reduction relay |
6 | Unused |
7 | Horn |
8 | Anti-theft relay |
9 | Washer / intermittent wiper |
10 | Fuel pump |
11 | Air conditioning relay |
Auxiliary relay panel

No. |
Description |
1 | Unused |
2 | Radio control unit for warning seat belt / parking light |
3 | Indoor lighting delay control unit |
4 | Unused |
5 | Front light controller |
6 | Unused |
7 | Radial radiator fan relay 3rd stage |
8 | ABS combination relay |
9 | Intensive washer relay |
10 | Window lift controller |
11 | Window lift controller |
12 | Rear window wiper relay |
13 | Unused |
14 | Automatic window switch |
15 | Heated driver’s seat relay |
16 | Relay for heated passenger seat |
17 | Unused |