Audi S4 Avant Quattro 2004 - 2004 ELECTRICAL Fuses & Circuit Breakers - A4, A4 Quattro, A4 Avant Quattro & S4
Audi S4 Avant Quattro 2004 - IDENTIFICATION ENGINE CODE
Engines are identified by a 3-letter code stamped on the engine. For engine code locations, see Fig. 1-Fig. 3 . Engine codes are also located on the vehicle data plate.
Fig. 1: Audi S4 Avant Quattro 2004 - Component Locations - Locating Engine Code (1.8L Turbo - AMB)
Fig. 2: Audi S4 Avant Quattro 2004 - Component Locations - Locating Engine Code (3.0L - AVK)
Fig. 3: Audi S4 Avant Quattro 2004 - Component Locations - Locating Engine Code (4.2L - BHF)
Audi S4 Avant Quattro 2004 - FUSES CONNECTOR STATION
| NOTE: | Manufacturer does not provide specific information for fuse number, position number, amperage rating and circuits protected in left side connector station. |
Connector stations are located on right and left sides of footwell below A-pillar trim. See . For fuse position in connector stations, see Fig. 4-Fig. 7 . For fuse number, position number, amperage rating and circuits protected in right side connector station, see FUSE IDENTIFICATION (CONNECTOR STATION - RIGHT) table.
Fig. 4: Audi S4 Avant Quattro 2004 - Component Locations - Locating Connector Station (Left)
Fig. 5: Audi S4 Avant Quattro 2004 - Component Locations - Locating Connector Station (Right)
Fig. 6: Audi S4 Avant Quattro 2004 - Component Locations - Identifying Connector Station Fuses (Left)
Fig. 7: Audi S4 Avant Quattro 2004 - Component Locations - Identifying Connector Station Fuses (Right)
Audi S4 Avant Quattro 2004 FUSE IDENTIFICATION (CONNECTOR STATION - RIGHT)
| Position No. | Fuse No. | Amp Rating | Circuit Protected |
| C | N/A | N/A | Not Used |
| D | N/A | N/A | Not Used |
| E |
| (1) | S46 | 30 | Power Seat |
| (2) | S46 | 10 | Power Seat |
| F | N/A | N/A | Not Used |
| (1) | Applies to vehicles equipped with manual seats with power lumbar. | | (2) | Applies to vehicles equipped with power seats. | |
Audi S4 Avant Quattro 2004 - FUSE COLOR IDENTIFICATION
Audi S4 Avant Quattro 2004 FUSE COLOR/AMP RATING
| Fuse Color | Amp Rating |
| Blue | 15 |
| Brown | 7.5 |
| Green | 30 |
| Light Brown | 5 |
| Red | 10 |
| Transparent (White) | 25 |
| Yellow | 20 |
Audi S4 Avant Quattro 2004 - FUSE PANEL LOCATION
Fuse panel is located behind left side of dashboard. See Fig. 8.
Fig. 8: Audi S4 Avant Quattro 2004 - Component Locations - Locating Fuse Panel
Audi S4 Avant Quattro 2004 - FUSE PANEL IDENTIFICATION
For fuse position within panel, see Fig. 9. For fuse number, amperage rating and circuits protected, see FUSE IDENTIFICATION (FUSE PANEL) table.
Fig. 9: Audi S4 Avant Quattro 2004 - Component Locations - Identifying Fuse Panel Fuse Locations
| NOTE: | Fuses 23 through 44 may be designated in wiring diagrams with a prefix of 2. For example, fuse No. 29 may be labeled as 229. Fuse No. 43 may be labeled as 243. |
Audi S4 Avant Quattro 2004 FUSE IDENTIFICATION (FUSE PANEL)
| Fuse No. | Amp Rating | Circuits Protected |
| 1 | 10 | A/C Control Head |
| 2 | 5 | Footwell Lights |
| 3 | 5 | Washer Nozzle Heaters |
| 4 | 5 | Coolant Fan Control Module, Coolant Fan Control Module II (1) |
| 5 | 10 | Oil Level Thermal Sensor, Tiptronic Switch, Rear Heated Seat Control Module, Navigation W/CD Mechanism Control Module, Board Computer Function Selector Switch II, Rear Window Shade Switch |
| 6 | 5 | High Pressure Sensor, Air Quality Sensor |
| 7 | 10 | Brake Light Switch, Clutch Vacuum Vent Valve Switch, ABS Control Module, Anti-Slip Control Switch |
| 8 | 5 | Operating Electronics Control Module, Telephone Amplifier, Telephone/Telematics Control Module |
| 9 | 15 | Brake Booster Relay (2) |
| 10 |
| (3) | 5 | Headlight Adjuster & Motor |
| (4) | 10 | Headlight Range Control Module |
| 11 | N/A | Not Used |
| 12 | 10 | DLC |
| 13 | 10 | Steering Column Electronic System Control Module |
| 14 | 10 | Brake Light Switch |
| 15 | 10 | Control Module W/Indicator Unit, Navigation W/CD Mechanism Control Module |
| 16 | 5 | Garage Door Opener Control Head & Control Module |
| 17 | N/A | Not Used |
| 18 | N/A | Not Used |
| 19 | N/A | Not Used |
| 20 (4) | 15 | Vehicle Electrical System Control Module, High Intensity Gas Discharge Lamp Control Module |
| 21 (4) | 15 | Vehicle Electrical System Control Module, High Intensity Gas Discharge Lamp Control Module |
| 22 | 15 | Door Control Module (Driver's & Passenger's) |
| 23 | 15 | Rear Window Regulator Motor |
| 24 | 20 | Comfort System Center Control Module |
| 25 | 30 | A/C Control Head, Fresh Air Blower Control Module |
| 26 | 30 | A/C Control Head |
| 27 | N/A | Not Used |
| 28 | 20 | Fuel Pump |
| 29 | 20 | ECM, Ignition Coils |
| 30 | 20 | Sunroof Motor |
| 31 |
| (5) | 15 | Back-Up Light, DLC |
| (6) | 15 | Shift Lock Solenoid, Multi-Function Transmission Range Switch |
| (7) | 15 | Shift Lock Solenoid, Park/Neutral Position, Transmission Control Module |
| (8) | 15 | Park/Neutral Position, Transmission Control Module |
| 32 | 15 | Fuel Injectors |
| 33 | 15 | Cigarette Lighter |
| 34 |
| Engine Code AMB | 15 | MAF Sensor, Secondary Air Injection Pump Relay & Solenoid Valve, EVAP Canister Purge Valve Regulator Valve No. 1, Turbocharger Recirculating Valve, Oxygen Sensor Heater, Leak Detection Pump |
| Engine Code AVK | 15 | MAF Sensor, Secondary Air Injection Pump Relay & Solenoid Valve, EVAP Canister Purge Valve Regulator Valve No. 1, Intake Manifold Change Over Valve, Oxygen, Sensor Heater, Leak Detection Pump |
| Engine Code BHF | 15 | MAF Sensor, Secondary Air Injection Pump Relay & Solenoid Valve, EVAP Canister Purge Valve Regulator Valve No. 1, Intake Manifold Change-Over Valve, Electrohydraulic Engine Mount Solenoid Valve, Exhaust Valve Flap, Oxygen Sensor Heater, Leak Detection Pump |
| 35 | 30 | Socket |
| 36 | 30 | Vehicle Electrical System Control Module, Rear Windshield Wiper Motor (9) |
| 37 | 25 | Vehicle Electrical System Control Module |
| 38 | 15 | Comfort System Center Control Module, Alarm Horn, Radar Interior Monitoring Control Module |
| 39 | 20 | Radio, Amplifier |
| 40 | 25 | Horn Relay |
| 41 | N/A | Not Used |
| 42 (1) | 25 | ABS Control Module |
| 43 | 15 | ECM |
| 44 | 30 | A/C Control Head, Rear Heated Seat Control Module |
| (1) | Applies to vehicles equipped with engine code BHF only. | | (2) | Applies to vehicles equipped with engine codes AMB or AVK only. | | (3) | Applies to vehicles equipped with light sensor and coming/leaving home function. | | (4) | Applies to vehicles equipped with high intensity gas discharge lamps. | | (5) | Applies to vehicles equipped with manual transmission only. | | (6) | Applies to vehicles equipped with 5-speed tiptronic transmission only. | | (7) | Applies to vehicles equipped with 6-speed tiptronic transmission only. | | (8) | Applies to vehicles equipped with multitronic transmission only. | | (9) | Applies to Avant models only. | |
Audi S4 Avant Quattro 2004 - MAIN FUSE
Main fuse is locating on battery. See Fig. 10. Main fuse is numbered "S88" and has an amperage rating of 150 amps.
Fig. 10: Audi S4 Avant Quattro 2004 - Component Locations - Locating Main Fuse
Audi S4 Avant Quattro 2004 - RELAYS FOUR-PIN RELAY CARRIER (E-BOX)
For fuse and relay positions within carrier, see Fig. 11. For relay number, position number and circuits protected, see RELAY IDENTIFICATION (FOUR-PIN RELAY CARRIER, E-BOX) table. For fuse number, position number, amperage rating and circuits protected, see FUSE IDENTIFICATION (FOUR-PIN RELAY CARRIER, E-BOX) table.
| NOTE: | Four-pin relay carrier is located in electronics box, plenum chamber, in the left rear corner of the engine compartment. |
Fig. 11: Audi S4 Avant Quattro 2004 - Component Locations - Identifying Four-Pin Relay Carrier (E-Box)
Audi S4 Avant Quattro 2004 RELAY IDENTIFICATION (FOUR-PIN RELAY CARRIER, E-BOX)
| Position | Relay No. | Circuit Protected |
| 1.1 (1) | J151 | Coolant Circulation Pump |
| 1.2 | N/A | Not Used |
| 2 | J299 | Secondary Air Injection Pump |
| 3 | J271 | ECM Power Supply |
| 4 |
| (2) | J434 | Starter Locking |
| (3) | J60 | Starter Interlock Alarm System |
| (4) | J226 | Park/Neutral Position |
| (1) | Applies to vehicles equipped with engine codes AVK and BHF. | | (2) | Applies to vehicles equipped with manual transmission only. | | (3) | Applies to vehicles equipped with 5-speed tiptronic transmission only. | | (4) | Applies to vehicles equipped with 6-speed tiptronic and multitronic transmissions only. | |
Audi S4 Avant Quattro 2004 FUSE IDENTIFICATION (FOUR-PIN RELAY CARRIER, E-BOX)
| Position No. | Fuse No. | Amp Rating | Circuit Protected |
| A | S282 | 15 | Engine Electronics |
| B | S130 | 40 | Secondary Air Pump |
| C (1) | S286 | 15 | Automatic Transmission After Run |
| (1) | Applies to vehicles equipped with 6-speed tiptronic and multitronic transmissions only. | |
Audi S4 Avant Quattro 2004 - FOUR-PIN RELAY CARRIER (INSTRUMENT PANEL)
For fuse and relay positions within carrier, see Fig. 12. For relay number, position number and circuits protected, see RELAY IDENTIFICATION (FOUR-PIN RELAY CARRIER, INSTRUMENT PANEL) table. For fuse number, position number, amperage rating and circuits protected, see FUSE IDENTIFICATION (FOUR-PIN RELAY CARRIER, INSTRUMENT PANEL) table.
| NOTE: | Four-Pin relay carrier is located under driver's side of instrument panel. |
Fig. 12: Audi S4 Avant Quattro 2004 - Component Locations - Identifying Four-Pin Relay Carrier (Instrument Panel)
Audi S4 Avant Quattro 2004 RELAY IDENTIFICATION (FOUR-PIN RELAY CARRIER, INSTRUMENT PANEL)
| Position No. | Relay No. | Circuit Protected |
| 1 | N/A | Not Used |
| 2 | N/A | Not Used |
| 3 | N/A | Not Used |
| 4 | N/A | Not Used |
Audi S4 Avant Quattro 2004 FUSE IDENTIFICATION (FOUR-PIN RELAY CARRIER, INSTRUMENT PANEL)
| Position No. | Fuse No. | Amp Rating | Circuit Protected |
| A | N/A | N/A | Not Used |
| B | N/A | N/A | Not Used |
| C | N/A | N/A | Not Used |
| D | N/A | N/A | Not Used |
| E (1) | S45 | 30 | Power Seats |
| F | N/A | N/A | Not Used |
| G | S42 | 40 | Coolant Fan |
| H | S123 | 50 | ABS Control Module |
| (1) | Applies to vehicles equipped with multitronic transmission only. | |
Audi S4 Avant Quattro 2004 - NINE-PIN RELAY CARRIER
For fuse and relay position within carrier, see Fig. 13. For relay number, position number and circuits protected, see RELAY IDENTIFICATION (NINE-PIN RELAY CARRIER) table. For fuse number, position number, amperage rating and circuits protected, see FUSE IDENTIFICATION (NINE-PIN RELAY CARRIER) table.
| NOTE: | Nine-Pin relay carrier is located behind instrument panel. |
Fig. 13: Audi S4 Avant Quattro 2004 - Component Locations - Identifying Nine-Pin Relay Carrier
Audi S4 Avant Quattro 2004 RELAY IDENTIFICATION (NINE-PIN RELAY CARRIER)
| Position No. | Relay No. | Circuit Protected |
| 1 | J17 | Fuel Pump |
| 2 | J236 | Servotronic Control Module |
| 3 | J4 | Horn |
| 4 (1) | J569 | Brake Booster |
| 5 | N/A | Not Used |
| 6 | J59 | Load Reduction |
| 7 | N/A | Not Used |
| 8 | N/A | Not Used |
| 9 | N/A | Not Used |
| (1) | Applies to vehicles equipped with engine codes AMB and AVK only. | |
Audi S4 Avant Quattro 2004 FUSE IDENTIFICATION (NINE-PIN RELAY CARRIER)
| Position No. | Fuse No. | Amp Rating | Circuit Protected |
| A | S100 | 10 | Rear Shade Circuit Breaker (Right) |
| B | S100 | 10 | Rear Shade Circuit Breaker (Left) |
| C | N/A | N/A | Not Used |
| D | S280 | 30 | Power Windows |
| E (1) | S45 | 30 | Power Seats |
| F | S37 | 30 | Power Windows |
| G | N/A | N/A | Not Used |
| (1) | Applies to vehicles equipped with power seats only. | |
