The Audi 100 and Audi 200 (C3) are mid-sized luxury cars produced by the German car manufacturer Audi from 1982 to 1991. These cars were designed to be more aerodynamic than their predecessors and were the first Audis to have a galvanized steel body, which helped to prevent rust. The Audi 100 and Audi 200 were also known for their advanced technology and safety features, making them popular with car buyers looking for a high-quality, reliable vehicle.
One of the most important components of any car is its electrical system, which includes the fuse box and relay. These components are responsible for managing the flow of electricity throughout the car and ensuring that all electrical systems are functioning properly. In the Audi 100 and Audi 200 (C3), the fuse box and relay are essential components that play a critical role in ensuring the car’s electrical systems are operating safely and efficiently.
Electrical Components
The electrical system in the Audi 100 and Audi 200 (C3) is controlled by the fuse box and relay. The fuse box is responsible for protecting the car’s electrical components from damage caused by electrical surges, while the relay controls the flow of electricity throughout the car. These components are critical for ensuring that all of the car’s electrical systems are functioning properly, including the headlights, taillights, dashboard lights, and audio system.
One common issue with the fuse box and relay in the Audi 100 and Audi 200 (C3) is that they can become worn over time, which can cause electrical problems such as blown fuses or malfunctioning systems. To prevent these issues, it’s important to regularly inspect the fuse box and relay and replace any worn or damaged components as soon as possible.
Maintenance
Regular maintenance is essential for ensuring that the Audi 100 and Audi 200 (C3) continue to operate at their best. This includes inspecting the fuse box and relay for signs of wear or damage and replacing any worn or damaged components as needed. It’s also important to keep the car’s electrical systems clean and free of debris, which can help to prevent electrical issues from occurring.
(1989-1991) Audi 100 and Audi 200 (C3) fuse box and relay with Diagram
Engine Compartment Fuse Box
| № | Amps | Hi-beam headlight left |
| 1 | 15A | Fog lights, rear fog lights |
| 2 | 15A | Emergency flashers |
| 3 | 25A | Horn, brake lights |
| 4 | 15A | Reading lights, luggage compartment, cigar lighter, interior lights, make-up mirror, Board Computer |
| 5 | 30A | Not used |
| 6 | 5A | Side marker, park lights, right |
| 7 | 5A | Side marker, park lights, left |
| 8 | 10A | Hi-beam headlight, hi-beam indicator light |
| 9 | 10A | Hi-beam headlight, left |
| 10 | 10A | Low beam, headlight, right |
| 11 | 10A | Low beam, headlight, left |
| 12 | 15A | Instrument cluster, back-up lights, cruise control, electronic thermoswitch |
| 13 | 15A | Fuel pump |
| 14 | 5A | Glove compartment, engine compartment, license plate lights |
| 15 | 25A | Windshield wipers |
| 16 | 30A | Rear window heat element, outside mirror heat element |
| 17 | 30A | Fresh air blower |
| 18 | 5A | Rear wiper (wagon) |
| 19 | 10A | Central locking system and fuel injection control unit 100, 100 Quattro |
| 20 | 30A | Heated seats with Memory Seat |
| 21 | 25A | Not used |
| 22 | – | Not used |
| 23 | 30A | Not used |
| 24 | 10A | Not used |
| 25 | 30A | Power seats with memory, passenger power seat |
| 26 | 5A | Auto-Check, power mirrors, driver’s seat memory control |
| 27 | 10A | Ignition control unit 100, 100 Quattro |
| 28 | 15A | Fuel injection control unit II |
| 29 | – | Spare fuses |
| № | Assignment/Designation |
| 1 | Open |
| 2 | Radiator cooling fan (stage 2) |
| 3 | 100 models — radiator cooling fan after-run 200 models — radiator cooling fan (stage 1) |
| 4 | Not used |
| 5 | Load reduction relay |
| 6 | Not used |
| 7 | Horn |
| 8 | Anti-theft relay |
| 9 | Intermittent washer/wiper |
| 10 | Fuel pump |
| 11 | A/C relay |
Auxiliary relay panel
| № | Assignment/Designation |
| 1 | Open |
| 2 | Seat belt/park light radio warning control unit |
| 3 | Interior light delay control unit |
| 4 | Open |
| 5 | Lamp control unit, front |
| 6 | Open |
| 7 | Rad coolant fan relay 3rd stage |
| 8 | ABS combination relay |
| 9 | Intensive washer relay |
| 10 | Power window control unit |
| 11 | Power window control unit |
| 12 | Driver-heated seat relay |
| 13 | Open |
| 14 | Circuit breaker for windows |
| 15 | Driver heated seat relay |
| 16 | Passenger heated seat relay |
| 17 | Open |
Conclusion
The Audi 100 and Audi 200 (C3) were advanced, reliable cars that were known for their innovative design and advanced safety features. However, like all cars, they require regular maintenance and attention to ensure that they continue to operate at their best. By regularly inspecting the fuse box and relay and replacing any worn or damaged components, Audi 100 and Audi 200 owners can help to ensure that their car’s electrical systems remain in top condition and that they can continue to enjoy the car’s many features and benefits.