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 .

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)