Audi A4 (B5, 1994 - 2000) fuses and relays

The first generation of the Audi A4 was produced until 2001 with minor changes. At first, only the sedan version was available, the wagon version (Avant) appeared a year later. The car was based on the same platform as the fifth generation Volkswagen Passat. In dimensions, the A4 practically does not differ from the Audi 80. In this material, we will analyze in detail all the fuse diagrams of the first Audi A4 (1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001 year of manufacture, body B5).

General view of the car
Here you will find the locations and photos of the mounting blocks. Separately, we note the fuses responsible for the fuel pump and cigarette lighter.

In the passenger compartment

Location of the fuse box in the passenger compartment
The main mounting block is located at the end of the dashboard on the driver's side.


General form.

Fuse Diagram
No. A Decryption
1 5 Heated washer nozzles
2 10 direction indicators
3 5 Headlight washer relay. Lighting; glove box. engine compartment, air conditioning, automatic transmission. dashboard
4 5 License plate lighting
5 10 Dashboard, heated seats, automatic transmission display. mirror switch, airbag lamp, outside temperature gauge, navigation system, parking lights
6 5 central locking
7 10 ABC system
8 5 Telephone
9 10 Mirror and door lock heater
10 5 Headlights corrector
11 5 Cruise control (automatic transmission)
12 10 Built-in diagnostics
13 10 Stop lights
14 10 Interior lighting, reading lights, anti-theft system, passenger visor mirror
15 10 Dashboard, automatic transmission [4-speed], air conditioning, navigation system
16 5 ABC system
17 10 Heated door locks
18 10 right high beam
19 10 left high beam
20 15 Right dipped beam, electric headlight corrector
21 15 Left dipped beam, headlight range control
22 5 Right marker lights
23 5 Left marker lights
24 25 Windshield Wipers, Washer Pump, Wiper Breaker Relay
25 30 Heating fan, air conditioner
26 30 Heated rear window, heated mirrors, air recirculation
27 - -
28 15 Engine management
30 20 Power sunroof
31 15 Reversing lights, cruise control, automatic transmission, diagnostic socket
32 20 Engine management
33 15 cigarette lighter fuse
34 15 Engine management
35 30 Trailer socket
36 15 Phone, radio
38 15 Trunk lighting, central locking
39 15 Emergency lighting
40   Klaxon
41 25 ABS system [hydraulic modulator/pump)
42 40 Fan
43 5 S-contact [central locking, radio, navigation system
44 30 Heated seats
Additional block diagram
Description A
18 ABS hydraulic pump 50
19 Electric radiator fan 40
21 Radiator fan relay coil 5
22 Rear power window lifter 30
23 Power window, front 30
24 Central locking and anti-theft alarm system 15

Location of the Audi A4 relay


The relay modules are located on the central distribution block under the dashboard.

Diagram
Description
1 Unloading relay for contact X
2 Horn relay
3 Headlight lens cleaning relay
4 Automatic transmission relay (starter interlock and reversing lights] or, respectively, a jumper for a manual transmission
5 Intermittent mode relay for cleaning and flushing system
6 Relay for fuel pump or glow plugs
Relay main board - A
3 Electromagnetic clutch relay (air conditioning)
4 Signaling device control unit
5
7 -
8 Daytime running light relay
9 Headlamp relay
10 Fog lamp relay
11 Control unit for folding mirror
12
13 -
14 Fuse for special signaling system [taxi]
15 -
16 Fuse for special signaling system [taxi]
17 Fuse for taximeter [taxi]
18 System hydraulic pump fuse [ABS] 
Transmitter Fuse [Taxi]

In the engine compartment

Location of the relay box in the engine compartment of the car
Under the hood there is an additional block with relay modules.

Diagram
Description
1 Heated oxygen sensor relay
Glow plug relay I - coolant
2 Glow plug relay II - coolant
3 Diesel Direct Injection Relay
4-5 -
6 Fuse for engine electrical equipment
7 Glow plug fuse I - coolant
8 Fuse II for glow plugs - coolant
9 Glow plug fuse
Additional relay board
1 Turnip rear fog lights
2 Fan operating mode relay at maximum speed [Lufter voll auf]
3 Relay for fan operation in the first stage
4 Power window control unit relay
5-15 -
16 Seat adjustment fuse
17 -
18 System hydraulic pump fuse (ABS)
19 Radiator fan fuse
20 -
21 Radiator fan changeover coil relay
22 Rear power window relay
23 Front power window relay
24 Relay for central locking and anti-theft system
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