Audi A6 2003 - 2003-04 ELECTRICAL Fuses & Circuit Breakers - A6, Allroad, RS6 & S6
Audi A6 2003 - IDENTIFICATION
| NOTE: | Article includes information for A6, A6 Avant Quattro, A6 Quattro, Allroad, Allroad Quattro, RS6, S6 and S6 Avant Quattro. |
Audi A6 2003 - ENGINE CODE
Engines are identified by a 3-letter code stamped on engine. On vehicles equipped with 2.7L engine code APB, engine code is on machined surface on cylinder block, at front right cylinder bank. The engine code is also indicated on the vehicle data sticker. See Fig. 1. On vehicles equipped with 3.0L engine code AVK, engine code are stamped on rear of cylinder block, left side, and included on vehicle data plate. See Fig. 2. On vehicles equipped with 4.2L engine code AWN or BBD, letters are located on left side of cylinder block. The engine code is also included on vehicle data label. See Fig. 3. On vehicles equipped with 4.2L engine code BAS or BCY, engine code is located at top front of cylinder block. See Fig. 4 or Fig. 5 .
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Fig. 1: Audi A6 2003 - Component Locations - Identifying Engine Code Location (2.7L - APB)
Fig. 2: Audi A6 2003 - Component Locations - Identifying Engine Code Location (3.0L - AVK)
Fig. 3: Audi A6 2003 - Component Locations - Identifying Engine Code Location (4.2L - AWN & BBD)
Fig. 4: Audi A6 2003 - Component Locations - Identifying Engine Code Location (4.2L - BAS)
Fig. 5: Audi A6 2003 - Component Locations - Identifying Engine Code Location (4.2L - BCY)
Audi A6 2003 - FUSES FUSE COLOR IDENTIFICATION
Audi A6 2003 FUSE COLOR/AMP RATING
| Fuse Color | Amp Rating |
| Black | 1 |
| Blue | 15 |
| Brown | 7.5 |
| Green | 30 |
| Light Brown | 5 |
| Red | 10 |
| Transparent (White) | 25 |
| Yellow | 20 |
Audi A6 2003 - FUSE PANEL LOCATION
Fuse panel is located behind left side of dashboard. See Fig. 6.
Fig. 6: Audi A6 2003 - Component Locations - Locating Fuse Panel
Audi A6 2003 - FUSE PANEL IDENTIFICATION
For fuse position within panel, see Fig. 7. For fuse number, amperage rating and circuits protected, see FUSE IDENTIFICATION (FUSE PANEL) table.
Fig. 7: Audi A6 2003 - Component Locations - Identifying Fuse Panel Fuses
| 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 A6 2003 FUSE IDENTIFICATION (FUSE PANEL)
| Fuse No. | Amp Rating | Circuits Protected |
| 1 | 5 | Washer Nozzle Heaters |
| 2 | 10 | Emergency Flasher Switch |
| 3 | 5 | Glove Compartment Light |
| 4 | 5 | License Plate Light |
| 5 | 10 | Heated Seat Adjusters, High Pressure Sensor, Navigation W/CD Drive Control Unit, Parking Aid Control Module, Lamp Control Module, A/C Control Head, A/C Clutch Relay, A/C Compressor Regulator Valve (1), Air Quality Sensor, Mirror Adjustment Switch, Mirror Fold-Away Function Control Module, Rear Window Shade, Radio, Oil Level Thermal Sensor, Level Control System Control Head (2), Level Control System Control Module (2), Tiptronic Switch (3) |
| 6 | 5 | Central Locking Control Module |
| 7 | 10 | Brake Pedal Switch, Cruise Control/Diesel Direct Fuel Injection, Cruise Control Switch, ABS Control Module, ASR/ESP Button (4), Steering Angle Sensor (4), Level Control System Control Head (2), Clutch Vacuum Vent Valve Switch (6), ECM, Brake Vacuum Vent Valve Switch (5) |
| 8 | 5 | Telephone/Telematic Control Module, Operating Electronic (Telephone) Control Module |
| 9 | 10 | Heated Outside Mirrors |
| 10 | 5 | Headlight Beam Adjustment Motors, Beam Adjustment Control Module |
| 11 | 5 | Automatic Day/Night Interior Mirror, Garage Door Opener Control Module |
| 12 | 10 | DLC |
| 13 | 10 | Brake Light Switch |
| 14 | 10 | Central Locking Control Module, Door Warning Lights, Passenger Compartment Monitoring Switch, Trunk Lid Release Switch, Memory Program Switch, Memory Control Head (Passenger's Seat), Seat Memory Control Module (Driver's & Passenger's) |
| 15 | 10 | Instrument Cluster, Solar Cell Separation Relay, Mirror Memory Control Module, Navigation W/CD Drive Control Unit |
| 16 | 5 | Steering Angle Sensor |
| 17 | 10 | Level Control System Control Module, Tire Pressure Monitoring Control Module (2), Capacitor (4), Parking Aid Control Module |
| 18 | 10 | High Beam (Right), Headlight High Beam Indicator Light, Control Module W/Display Unit In Instrument Cluster (7) |
| 19 | 10 | High Beam (Left), Fog Light Relay |
| 20 | 15 | Lamp Control Module, Low Beam Headlight (Right) |
| 21 | 15 | Lamp Control Module, Low Beam Headlight (Left) |
| 22 | 5 | Lamp Control Module, Tail Light (Right), Parking Light (Right) |
| 23 | 5 | Lamp Control Module, Tail Light (Left), Parking Light (Left) |
| 24 | 25 | Wiper/Washer Intermittent Relay |
| 25 | 30 | Fresh Air Blower, Solar Cell Separation Relay, A/C Control Head, A/C Clutch Relay |
| 26 | 30 | A/C Control Head, Rear Window Defogger Switch |
| 27 | 15 | Rear Window Wiper Motor, Heated Steering Wheel, Steering Wheel Control Unit |
| 28 |
| All Engine Codes Except BCY | 20 | Fuel Pump |
| Engine Code BCY | 20 | Fuel Pump Control Module, Three Fold Relay Panel (Instrument Panel) |
| 29 |
| Engine Codes APB | 20 | Ignition Coils, ECM |
| Engine Code AVK | 20 | Ignition Coils |
| Engine Codes AWN & BBD | 30 | Camshaft Adjustment Valves, Ignition Coils, Motronic ECM |
| Engine Code BAS | 30 | Ignition Coils, ECM |
| Engine Code BCY | 20 | Camshaft Adjustment Valves, Ignition Coils, Motronic ECM, Electrohydraulic Engine Mount Solenoid Valve (Left & Right) |
| 30 | 20 | Power Sunroof Control Module |
| 31 |
| Manual Transmission | 15 | Back-Up Light Switch, DLC |
| Automatic Transmission | 15 | DLC, Multi-Function Transmission Range Switch, Shift Lock Solenoid, Park/Neutral Position Relay (8), Transmission Control Module (8) |
| 32 |
| Engine Code APB | 20 | Cruise Control Switch, Cruise Control, Fuel Injectors |
| Engine Codes AVK, AWN, BAS & BBD | 20 | Fuel Injectors |
| Engine Code BCY | 20 | Fuel Injectors, Coolant Circulation Valve |
| 33 | 15 | Cigarette Lighters |
| 34 |
| Engine Code APB | 15 | MAF Sensor, Oxygen Sensor Heaters, EVAP Canister Purge Valve, Secondary Air Injection Solenoid Valve, Secondary Air Injection Pump Relay, Leak Detection Pump, Exhaust Temperature Sensors, Wastegate Bypass Regulator Valve, Central Idle Air Control Cut-Off Valve |
| Engine Code AVK | 15 | MAF Sensor, Oxygen Sensor Heaters, EVAP Canister Purge Valve, Secondary Air Injection Solenoid Valve, Secondary Air Injection Pump Relay, Intake Change-Over Valve, Leak Detection Pump |
| Engine Code AWN & BBD | 15 | MAF Sensor, Oxygen Sensor Heaters, EVAP Canister Purge Valve, Secondary Air Injection Solenoid Valve, Secondary Air Injection Pump Relay, Electrohydraulic Engine Mount Solenoid Valve (Left & Right), Intake Manifold Change-Over Valve, Intake Manifold Tuning Valve No. 2 (9), Leak Detection Pump, Intake Air Switch-Over (10) |
| Engine Code BAS | 15 | MAF Sensor, Oxygen Sensor Heaters, EVAP Canister Purge Valve, Secondary Air Injection Solenoid Valve, Secondary Air Injection Pump Relay, Intake Change-Over Valve, Leak Detection Pump, Electrohydraulic Engine Mount Solenoid Valve (Left & Right) |
| Engine Code BCY | 15 | MAF Sensor, Oxygen Sensor Heaters, EVAP Canister Purge Valve, Secondary Air Injection Solenoid Valve, Secondary Air Injection Pump Relay, Leak Detection Pump, Exhaust Temperature Sensors, Wastegate Bypass Regulator Valve, Turbocharger Recirculation Valve |
| 35 | 30 | Trailer Socket |
| 36 | 15 | Fog Light Switch |
| 37 | 20 | Radio, Right Rear Woofer/Amp, Power Antenna |
| 38 | 20 | Central Locking Control Module |
| 39 | 15 | Emergency Flasher Switch |
| 40 | 25 | Dual Horn Relay |
| 41 (2) | 25 | ABS Solenoid Valve |
| 42 | 25 | ABS Control Module (W/EDL) |
| 43 | N/A | Not Used |
| 44 | 30 | Heated Seat Adjusters, Heated Seat Switch |
| (1) | Applies to vehicles equipped with engine codes AVK and BAS only. | | (2) | Applies to Allroad models only. | | (3) | Applies to vehicles equipped with automatic transmission only. | | (4) | Applies to all models except Allroad. | | (5) | Applies to vehicles equipped with cruise control only. | | (6) | Applies to vehicles equipped with manual transmission only. | | (7) | Applies to vehicles equipped with high intensity gas discharge lamps only. | | (8) | Applies to vehicles equipped with multitronic transmission (01J) only. | | (9) | Applies to vehicles equipped with engine code AWN only. | | (10) | Applies to vehicles equipped with engine code BBD only. | |
Audi A6 2003 - RELAYS THREE FOLD RELAY PANEL (E-BOX)
For fuse and relay positions within panel, see Fig. 8. For relay number, position number and circuits protected, see RELAY IDENTIFICATION (THREE FOLD RELAY PANEL) table. For fuse number, amperage rating, and circuits protected, see FUSE IDENTIFICATION (THREE FOLD RELAY PANEL) table.
| NOTE: | Three fold relay panel is located in electronics box, plenum chamber, in the left rear corner of engine compartment. |
| NOTE: | Manufacturer does not provide fuse number, amperage rating, or circuits protected for three fold relay panel fuses. |
Fig. 8: Audi A6 2003 - Component Locations - Identifying Three Fold Relay Panel Components (E-Box)
Audi A6 2003 RELAY IDENTIFICATION (THREE FOLD RELAY PANEL, E-BOX)
| Position | Relay No. | Circuit Protected |
| 1A (1) | J26 | Coolant Fan Control |
| 1B (2) | J151 | Coolant Circulation Pump |
| 1 (3) | J299 | Secondary Air Injection Pump Relay |
| 2 (4) | J299 | Secondary Air Injection Pump Relay |
| 3 |
| All Transmissions Except Multitronic (J104) | J271 | Motronic ECM Power Supply |
| Multitronic (J104) Transmission | J64 | Ignition Delay |
| 4 (3) | J151 | Coolant Circulation Pump |
| (1) | Applies to vehicles equipped with engine code BAS only. | | (2) | Applies to vehicles equipped with engine code AVK and BAS only. | | (3) | Applies to vehicles equipped with engine code BCY only. | | (4) | Applies to all vehicles except vehicles equipped with engine code BCY only. | |
Audi A6 2003 FUSE IDENTIFICATION (THREE FOLD RELAY PANEL, E-BOX)
| Position | Fuse No. | Amp Rating | Circuit Protected |
| 4 | N/A | N/A | Not Used |
| 5 (1) | S282 | 15 | Engine Electronic |
| 6 | N/A | N/A | Not Used |
| 7 | S130 | 40 (2) | Secondary Air Pump |
| 8 | N/A | N/A | Not Used |
| 9 |
| Engine Code BAS | S94 | 15 | Coolant Fan (3rd Speed) |
| Engine Code BCY | S78 | 10 | Engine Coolant Pump Circuit Breaker |
| 10 |
| Multitronic (01J) Transmission | S199 | 15 | Transmission Control Module |
| Engine Code BAS | S142 | 5 | Coolant Fan Control Module |
| (1) | Applies to vehicles equipped with engine codes APB, AVK and BAS only. | | (2) | On vehicles equipped with engine code BAS, amperage rating is 50A. | |
Audi A6 2003 - THREE FOLD RELAY PANEL (INSTRUMENT PANEL)
For fuse and relay position within panel, see Fig. 9. For relay number, position number and circuits protected, see RELAY IDENTIFICATION (THREE FOLD RELAY PANEL, INSTRUMENT PANEL) table. For fuse number, position number, amperage rating, and circuits protected, see FUSE IDENTIFICATION (THREE FOLD RELAY PANEL, INSTRUMENT PANEL) table.
| NOTE: | Three fold relay panel is located behind instrument panel on central girder. |
Fig. 9: Audi A6 2003 - Component Locations - Identifying Three Fold Relay Components (Instrument Panel)
Audi A6 2003 RELAY IDENTIFICATION (THREE FOLD RELAY PANEL, INSTRUMENT PANEL)
| Position No. | Relay No. | Circuit Protected |
| 1 (1) | J569 | Brake Booster |
| 2 | N/A | Not Used |
| 3 | N/A | Not Used |
| (1) | Applies to all engine codes except AWN and BBD. | |
Audi A6 2003 FUSE IDENTIFICATION (THREE FOLD RELAY PANEL, 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 (1) | S279 | 15 | Brake Booster Relay |
| D (2) | S81 | 20 | Fuel Pump |
| (1) | Applies to all engine codes except AWN and BBD. | | (2) | Applies to vehicles equipped with engine code BCY only. | |
Audi A6 2003 - EIGHT FOLD RELAY PANEL
For fuse and relay positions within carrier, see Fig. 10. For relay number, position number and circuits protected, see RELAY IDENTIFICATION (EIGHT FOLD RELAY PANEL) table. For fuse number, position number, amperage rating and circuits protected, see FUSE IDENTIFICATION (EIGHT FOLD RELAY PANEL) table.
| NOTE: | Eight fold relay panel is located behind trim panel, under driver's side of instrument panel. |
Fig. 10: Audi A6 2003 - Component Locations - Identifying Eight Fold Relay Panel Components
Audi A6 2003 RELAY IDENTIFICATION (EIGHT FOLD RELAY PANEL)
| Position No. | Relay No. | Circuit Protected |
| 1 (1) | J106 | ABS Solenoid Valve |
| 2 | J101 | Second Speed Coolant Fan Control |
| 3 | J26 | Coolant Fan Control |
| 4 | N/A | Not Used |
| 5 | N/A | Not Used |
| 6 (1) | J403 | Compressor Level Control System |
| 7 (1) | J105 | ABS Return Flow Pump |
| 8 | N/A | Not Used |
| (1) | Applies to Allroad models only. | |
Audi A6 2003 FUSE IDENTIFICATION (EIGHT FOLD RELAY PANEL)
| Position No. | Fuse No. | Amp Rating | Circuit Protected |
| 9 | N/A | N/A | Not Used |
| 10 | N/A | N/A | Not Used |
| 11 | N/A | N/A | Not Used |
| 12 | N/A | N/A | Not Used |
| 13 | N/A | N/A | Not Used |
| 14 (1) | S44 | 30 | Power Seat Circuit Breaker No. 1 |
| 15 (2) | S184 | 20 | Luggage Compartment Socket |
| 16 | S37 | 30 | Power Window Circuit Breaker (Front) |
| 17 | S43 | 30 | Power Window Circuit Breaker (Rear) |
| 18 | S123 | 50 | ABS Control Module |
| 19 | S42 | 60 | Coolant Fan |
| 20 | N/A | N/A | Not Used |
| 21 |
| (3) | S142 | 5 | Coolant Fan Control Module |
| Engine Code BAS | S146 | 5 | Coolant Fan (1st & 2nd Speed) |
| 22 |
| A6 & S6 | S44 | 30 | Power Seat Circuit Breaker No. 1 |
| Allroad & RS6 | S104 | 40 | Second Speed Coolant Fan |
| 23 | S110 | 40 | Self-Leveling System |
| 24 | S80 | 30 | Power Seat Circuit Breaker No. 2 |
| (1) | Applies to vehicle equipped with sport seat. | | (2) | Applies to Avant models only. | | (3) | Applies to all vehicles except ones equipped with engine code APB and BAS. | |
Audi A6 2003 - THIRTEEN FOLD RELAY PANEL
For fuse and relay position within carrier, see Fig. 11. For relay number, position number and circuits protected, see RELAY IDENTIFICATION (THIRTEEN FOLD RELAY PANEL) table. For fuse number, position number, amperage rating and circuits protected, see FUSE IDENTIFICATION (THIRTEEN FOLD RELAY PANEL) table.
| NOTE: | Thirteen fold relay panel is located behind trim panel under driver's side of instrument panel. |
Fig. 11: Audi A6 2003 - Component Locations - Identifying Thirteen Fold Panel Components
Audi A6 2003 RELAY IDENTIFICATION (THIRTEEN FOLD RELAY PANEL)
| Position No. | Relay No. | Circuit Protected |
| 1 | J4 | Dual Horn (Relay No. 2) |
| 2 | N/A | Not Used |
| 3 | J309 | Solar Cell Separation |
| 4 |
| All Models Except Avant | J207 | Starting Interlock |
| Avant & Multitronic (01J) Transmission | J226 | Park/Neutral Position |
| 5 | J44 | A/C Clutch |
| 6 | J5 | Fog Light |
| 7 | J453 | Multi-Function Steering Wheel |
| 8 | J453 | Multi-Function Steering Wheel |
| 9 | J123 | Lamp Control Module |
| 10 | J123 | Lamp Control Module |
| 11 | J351 | Mirror Fold-Away Function Control Module |
| 12 | J351 | Mirror Fold-Away Function Control Module |
| 13 | J236 | Servotronic Control Module |
Audi A6 2003 FUSE IDENTIFICATION (THIRTEEN FOLD RELAY PANEL)
| Position No. | Fuse No. | Amp Rating | Circuit Protected |
| 14 (1) | S279 | 30 | Hydraulic Pump Relay |
| 15 | N/A | N/A | Not Used |
| 16 | N/A | N/A | Not Used |
| 17 (2) | S28 | 12 | Fog Light Circuit Breaker |
| 18 | N/A | N/A | Not Used |
| (1) | Applies to Allroad models equipped with manual transmission only. | | (2) | Applies to vehicles produced in Canada only. | |
Audi A6 2003 - MICRO CENTRAL ELECTRIC PANEL
For relay position within panel, see Fig. 12. For relay number, position number and circuits protected, see RELAY IDENTIFICATION (MICRO CENTRAL ELECTRIC PANEL) and FUSE IDENTIFICATION (MICRO CENTRAL ELECTRIC PANEL) tables.
| NOTE: | Micro central electric panel is located in driver's side footwell, behind trim panel. |
Fig. 12: Audi A6 2003 - Component Locations - Identifying Micro Central Electric Components
Audi A6 2003 RELAY IDENTIFICATION (MICRO CENTRAL ELECTRIC PANEL)
| Position No. | Relay No. | Circuit Protected |
| 1 | J4 | Dual Horn |
| 2 | J59 | Load Reduction |
| 3 (1) | J555 | Low Range Hydraulic Pump |
| 4 | J17 | Fuel Pump |
| 5 | J31 | Wiper/Washer Intermittent |
| 6 | J31 | Wiper/Washer Intermittent |
| (1) | Applies to Allroad models equipped with manual transmission only. | |
Audi A6 2003 FUSE IDENTIFICATION (MICRO CENTRAL ELECTRIC PANEL)
| Position No. | Fuse No. | Amp Rating | Circuit Protected |
| A | S275 | 20 | Steering Column Adjustment |
| B | S100 | 10 | Rear Shade |
| C | S326 | 1 | Multi-Function Steering Wheel (Blue) |
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