The third generation Audi A6 was introduced in 2004. The new A6 sedan is an evolution of the previous model, so the placement of many elements is the same. This article provides a list of fuses and relays for the Audi A6 C6 with box diagram and designation manufactured in 2005, 2006, 2007, 2008, 2009, 2010 and 2011.
The given material is universal and is suitable for all vehicles based on the Audi A6 C6 – S6 – Allroad. The location of the fuses depends on the equipment and the year of manufacture of the vehicle. Check with your description in the vehicle manual.
Contents
Passenger compartment
Box on the left side
Located on the left side of the dashboard. Remove the protective cover for access. 
For the exact description of the fuses, refer to the information on the back of the protective cover.
Diagram
Assignment
| 1 | Spare |
| 2 | Spare |
| 3 | 5A motor control |
| 4 | 5A oil level sensor |
| 5 | 5A air conditioner |
| 6 | 5A Electronic Dynamic Stability Program (ESP), clutch sensor |
| 7 | 5A plug for diagnostic system |
| 8 | 5A HomeLink control unit |
| 9 | 5A auto-shielded interior rearview mirror |
| 10 | 5A maintaining distance (adaptive cruise control) |
| 11 | 5A auxiliary heater |
| 12 | 10A plug for diagnostic system |
| 13 | 10A steering column switch module |
| 14 | 5A brake signal switch |
| 15 | 10A instrument cluster |
| 16 | 10A telephone, telematics, mobile phone |
| 17 | 10A Electronic Stability Program (ESP) |
| 18 | 5A left headlight electronics |
| 19 | 5A rain sensor |
| 20 | 5A heated washer jets |
| 21 | 5A antenna amplifier |
| 22 | absent |
| 23 | 5A electromechanical parking brake |
| 24 | absent |
| 25 | absent |
| 26 | absent |
| 27 | absent |
| 28 | absent |
| 29 | absent |
| 30 | absent |
| 31 | 15A reversing light switch, multitronic transmission, engine component |
| 32 | 30A intelligent driver power module (footwell and headlights, horn, wiper, electric steering column adjustment) |
| 33 | 25A intelligent driver power module (lighting on the left) |
| 34 | 25A intelligent driver power module (right lighting) |
| 35 | 20A auxiliary heater |
| 36 | 30A headlight cleaner |
| 37 | 25A Electronic Stability Program (ESP) |
| 38 | 30A wiper |
| 39 | 15A left door control unit |
| 40 | 25A beep / MMI display |
| 41 | 40A heater fan |
| 42 | 30A ECM / ELECTRONIC STEERING COLUMN CONTROL MODULE |
| 43 | absent |
| 44 | 15A advanced key control box / airbag |
Relay box
This box of elements is located under the dashboard, slightly to the left of the steering wheel. All elements are located on a specially designed bracket holder.
Diagram
Designation
| A | Fuse for ABS control unit 1 -S123- (40A) |
| B | Spare |
| C | Spare |
| D | Spare |
| 1 | Power relay (terminal 15) -J329- |
| 2 | Headlamp washer relay -J39- |
| 3 | Spare |
| 4 | Starter relay -J53- |
| 5 | Power relay (terminal 75x) -J694- (up to 04.2005) |
| 6 | Starter relay 2 -J695- |
| 7 | Signal relay -J4- |
| 7 | Voltage supply relay (terminal 75x) -J694- (from 05.2005) |
| 8 | Spare |
| 9 | Spare |
Box on the right side
Located respectively on the right side of the dashboard.
Protected components
fuse box (black) | |
| 1 | 5A telepassport (in some export countries) |
| 2 | 20A front cigarette lighter |
| 3 | 5A tire pressure monitoring system |
| 4 | absent |
| 5 | 15A Intelligent Front Passenger Power Module (glove box unlocking) |
| 6 | 15A right door control unit |
| 7 | 20A sliding roof panel |
| 8 | 10A air conditioning controls |
| 9 | 30A heated front seats |
| 10 | 5 / 10A communication |
| 11 | 15A ride height control |
| 12 | 5A communication |
fuse box (brown) | |
| 1 | 20A electric fuel pump |
| 2 | 5A car phone (Bluetooth) |
| 3 | |
| 4 | |
| 5 | 5A ride height control |
| 6 | 5A Automatic Transmission Shifter / Clutch Switch |
| 7 | 5A acoustic parking system |
| 8 | 5A Gateway Control Unit |
| 9 | 5A automatic headlight range control (auxiliary headlight), right headlight electronics |
| 10 | 5A airbag |
| 11 | 5A heated rear seats |
| 12 | absent |
For the front cigarette lighter, it is responsible to protect the number 2 in the black row, otherwise see the box in the luggage compartment.
Luggage compartment
Fuse and relay box is located on the left under the casing, where the jack is. More details in the video.
Diagram
8 – Rear window defogger relay, 9 – from 2006: Additional heater fuel pump relay, 10 – Fuel pump relay.
Designation
| No. | Protected chain |
| Black fuse box | |
| 1 | 30A Digital / Signal Processing (DSP) / BOSE amplifier |
| 2 | 5A MMI, antenna amplifier |
| 3 | 30A Electromechanical parking brake, left motor |
| 4 | 30A Electromechanical parking brake, motor right |
| 5 | 20A Socket in the trunk |
| 6 | 5A Battery – Power Distribution System |
| 7 | 20A Intelligent power distribution unit (light on the right) |
| 8 | 5A Rear Intelligent Power Distribution Unit |
| 9 | 30A Intelligent power distribution unit at the back (light on the left) |
| 10 | 35A Windows (right side of the car) |
| 11 | 5A Left-hand drive models: Park assist. 20A RHD Models: Front Cigarette Lighter |
| 12 | 20A Rear cigarette lighter |
| Brown fuse box | |
| 1 | 5A Reverse Parking Camera |
| 2 | 30A Power tailgate |
| 3 | 30A Power tailgate |
| 4 | 20A Power tailgate |
| 5 | 5A Antenna amplifier |
| 6 | 5A TV tuner |
| 7 | 5A Intelligent power distribution unit (comfort) |
| 8 | 20A Auxiliary heater |
| 9 | 5A Digital tuner |
| 10 | 15A Traction hitch control unit |
| 11 | 15A Traction – hitch (left lamp) |
| 12 | 15A Traction – hitch (right lamp) |
Additional Information
Video on how to get to the bracket with the relay in the Audi cabin:
On our YouTube channel, we also posted a video. Watch and subscribe.
And if you know how to make this post better – write in the comments.
I have Audi a 6 c6 2008 2.7 since getting fuel gauge working with new floor .I have no live to tank pump and fuel pump fuse 1 brown fuse Box .I think it relay but can find it .
Video seems to be showing C5 platform A6, not C6 platform
Imel bi eno uprasanje imam audi a6 karavan 2006letnik 3.0 v6 automatic.vceraj sem dal kljuc v klučavnico za vžig in ga obrnil in se ne prižge nobena lučka pri števcih tako da tudi ne vžiga radijo in ostale stvari vse normalno delajo sem polnil akumolator in tudi ni blo nič tudi probal smo vzgat na kable pa ni bilo nič.prosil bi če mi poveste katere varovalke pogledam ker nevem kaj drugega bi lahko še bilo.hvala
Where are all the air suspension relays fuses compressor fuse ride height level fuse