At the end of 2002, the first Audi A8 was replaced by an updated model – D3 / 4E . Produced in 2003, 2004, 2005, 2006, 2007, 2008, 2009 and 2010. During all this time, she received 2 restyling: the front grill and taillights have changed noticeably. In our article you will find a description of relay and fuse boxes for the Audi A8 D3 with box diagrams and the purpose of their elements.
Contents
Locations
- Fuse box on the left dashboard;
- Relay and fuse box in the engine compartment;
- Relay and fuse box behind the dashboard;
- Fuse box on the dashboard on the right;
- Fuses on the rack on the right;
- Fuse box at the passenger’s feet;
- 8. 9. 10. – Blocks with relays and fuses in the luggage compartment on the left and right, respectively.
Fuse box on the left in the passenger compartment
Located on the left side of the dashboard behind a plastic cover.
Diagram
Designation
| No. | Consumer | A |
| 1 | garage door opener (HomeLink) | 5 |
| 2 | parking assistance (acoustic parking system) | 5 |
| 3 | parking assistance (acoustic parking system) | 5 |
| 4 | automatic headlight range control | 10 |
| 5 | instrument cluster | 5 |
| 6 | steering column electronics control unit | 10 |
| 7 | diagnostic plug | 5 |
| 8 | diagnostic plug | 5 |
| 9 | Electronic Stability Program (ESP) | 5 |
| 10 | instrument cluster | 5 |
| 11 | absent | |
| 12 | brake light switch | 5 |
| 13 | telephone | 10 |
| 14 | absent | |
| 15 | driver identification system control unit | 5 |
| 16 | absent | |
| 17 | maintaining distance (adaptive cruise control) | 5 |
| 18 | heated washer jets | 5 |
| 19 | absent | |
| 20 | tire pressure monitoring system | 5 |
| 21 | absent | |
| 22 | brake signal switch | 5 |
| 23 | TV passport | 5 |
| 24 | sound signal | 15 |
| 25 | wiper | 40 |
| 26 | absent | |
| 27 | Electronic Stability Program (ESP) | 25 |
| 28 | absent | |
| 29 | lighting switches | |
| 30 | absent | |
| 31 | Onboard power supply control unit, front right lighting | 30 |
| 32 | absent | |
| 33 | additional space heater for hoi rear left | 25 |
| 34 | absent | |
| 35 | absent | |
| 36 | absent | |
| 37 | absent | |
| 38 | Onboard power supply control unit, front left lighting | 30 |
| 39 | front left door control unit | 7.5 |
| 40 | steering column adjustment | 25 |
| 41 | rear left door control unit | 7.5 |
| 42 | identification / start enable control unit | 25 |
| 43 | absent | |
| 44 | absent |
Fuse box on the right in the passenger compartment
Assignment
| No. | Appointment | Ampere |
| 1 | electromechanical parking brake | 5 |
| 2 | air conditioning | 10 |
| 3 | shifter, PN-blocking | 5 |
| 4 | automatic transmission (multitronic) | 15 |
| 5 | engine control | 15 |
| 6 | lambda probes | 15 |
| 7 | lambda probes / high pressure valve | 15/10 |
| 8 | engine management, additional water pump | 10 |
| 9 | air conditioning, instrument panel keys | 5 |
| 10 | air suspension (adaptive air suspension) | 10 |
| 11 | light and rain sensor | 5 |
| 12 | display / control unit in front | 5 |
| 13 | electronics in the ceiling | 10 |
| 14 | media player in front (CD player, DVD player, etc.) | 5 |
| 15 | battery-energy management system | 5 |
| 16 | heating crankcase ventilation system | 5 |
| 17 | valve electronics jura | 5 |
| 18 | absent | |
| 19 | diesel air mass meter sensor | 5 |
| 20 | air-conditioned seat | 5 |
| 21 | engine management (petrol / diesel) | 5/15 |
| 22 | fuel cooling | 10 |
| 23 | electromechanical parking brake | 5 |
| 24 | onboard supply control unit 2 | 10 |
| 25 | automatic transmission | 15 |
| 26 | A / C water pump / valves, rear A / C controls | 10 |
| 27 | lift-slide roof panel | 20 |
| 28 | the engine control unit | 5 |
| 29 | Valve nozzles | 15 |
| 30 | ignition coils | 30 |
| 31 | fuel pump right / fuel pump electronics (petrol) | 20/40 |
| 32 | automatic transmission / multitronic | 5/10 |
| 33 | additional heating gel legroom rear right | 25 |
| 34 | heated / ventilated rear seats | 20 |
| 35 | Heated / ventilated front seats | 20 |
| 36 | Front cigarette lighter | 20 |
| 37 | rear cigarette lighter socket | 20/30 |
| 38 | additional radiator fan | 20 |
| 39 | front right door control unit | 7.5 |
| 40 | brake booster | 15 |
| 41 | rear right door control unit | 7.5 |
| 42 | auxiliary heater / additional heater | 20 |
| 43 | headlight cleaner | 30 |
| 44 | heater fan |
For the front cigarette lighter, there is a fuse number 36A at 20A.
Fuses located in the luggage compartment
on the left side
Protected components
| No. | A | |
| 1 | ||
| 2 | ||
| 3 | ||
| 4 | ||
| 5 | DSP amplifier | 30 |
| 6 | navigation | 5 |
| 7 | TV tuner | 10 |
| 8 | absent | |
| 9 | communication unit | 5 |
| 10 | phone loudspeaker in hat shelf | 15 |
| 11 | socket | 20 |
| 12 | radio receiver for auxiliary heater | 5 |
on the right side
Designation
| No. | A | |
| 1 | fuel pump on the right (diesel) | 20 |
| 2 | fuel pump on the left (petrol / diesel) | 20 |
| 3 | trailer socket | 15 |
| 4 | absent | |
| 5 | intelligent power module at the back (light on the left) | 20 |
| 6 | intelligent power module at the back (light on the right) | 10 |
| 7 | Intelligent power module at the rear (tailgate assist) | 20 |
| 8 | electromechanical parking brake, left motor | 30 |
| 9 | electromechanical parking brake, motor right | 30 |
| 10 | trailer control unit (light on the left) | 15 |
| 11 | trailer control unit (light on the right) | 15 |
| 12 | trailer control unit | 10 |
These diagrams and descriptions are for informational purposes only, check the current location of the fuses with your car manual.
Additional Information
Video example about replacing fuses and repairing the instrument panel backlight.
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great info i have a 2005 audi info screen does not pop up radio dont work controls on steering wheel dont work its a a8
same here find anything that works
Same problem I replaced the mmi on the center console and changing fuses now still nothing help
Could be the unit itself…or MMI computer
brought it in for a diagnostic and was told it the problem was at the MMI fiber optic in the trunk driver side
keep getting no stating ignition and battery being flat