Audi TT 2008 Fuse Box Info
Passenger compartment fuse box location:
The fuse box is located on the left front side of the cockpit.
Engine compartment fuse box location:
Fuse Box Diagram | Layout
Passenger compartment fuse box:
| Fuse/Relay N° | Rating | Functions |
| 1 | 10A | Engine relay, fuel tank control unit, Airbag Off light, light switch (switch illumination), diagnostic connector |
| 2 | 5A | ABS, ASR, ESP/ESC, brake light switch |
| 3 | 5A | AFS headlight (left) |
| 4 | 5A | Oil level sensor (extended maintenance interval) (WIV), tire pressure monitoring system, switch for Electronic Stability Program (ESP / ESC), AFS headlights (control unit), A/C system (pressure sensor), backup light switch |
| 5 | 5/10A | Automatic headlight range control, AFS headlight (right) / manual headlight range control, halogen headlights |
| 6 | 5A | Control unit for CAN data transfer (gateway), electromechanical steering, automatic transmission shift gate |
| 7 | 5A | Acoustic Park Assist, automatic dipping interior rear view mirror, garage door opener, heatable windshield washer nozzles, washer pump, wind deflector relay (Roadster) |
| 8 | 5A | Haldex clutch |
| 9 | 5A | Control unit Audi magnetic ride |
| 10 | 5A | Airbag control unit |
| 11 | 5/10A | Mass airflow sensor, crankcase heating |
| 12 | 10A | Door control unit (central locking driver/passenger) |
| 13 | 10A | Diagnostic connector |
| 14 | 5A | Rain sensor, automatic transmission shift gate |
| 15 | 5A | Roof light (interior lighting) |
| 16 | 10A | A/C system (control unit) |
| 17 | 5A | Tire pressure monitoring system (control unit) |
| 18 | - | Not used |
| 19 | - | Not used |
| 20 | - | Not used |
| 21 | 10A | Fuel injectors (gasoline engine) |
| 22 | 30A | Wind deflector (Roadster) |
| 23 | 20A | Horn |
| 24 | 15A | Transmission (control unit) |
| 25 | 30/20A | Heater rear window Coupe/heated rear window Roadster |
| 26 | 30A | Driver's side power window |
| 27 | 30A | Passenger's side power window |
| 28 | - | Not used |
| 29 | 15A | Washer pump |
| 30 | 20A | Cigarette lighter |
| 31 | 40A | Starter |
| 32 | 5A | Steering column module |
| 33 | 5A | Instrument cluster |
| 34 | 15A | Radio navigation system, radio |
| 35 | 30A | Audio amplifier |
| 36 | 10A | Engine (control unit) |
| 37 | 5A | CAN (Gateway) |
| 38 | - | Not used |
| 39 | - | Not used |
| 40 | - | Not used |
| 41 | - | Not used |
| 42 | - | Not used |
| 43 | - | Not used |
| 44 | - | Not used |
| 45 | - | Not used |
| 46 | - | Not used |
| 47 | 5A | SDARS tuner, cell phone package, TV tuner |
| 48 | 5A | VDA interface |
| 49 | - | Not used |
Engine compartment fuse box:
| Fuse/Relay N° | Rating | Functions |
| Fuse panel A (black) | ||
| 1 | - | Not used |
| 2 | - | Not used |
| 3 | - | Not used |
| 4 | - | Not used |
| 5 | 5A | Anti-theft warning system (sensor), anti-theft warning system (horn) |
| 6 | 30A | Headlamp washer system |
| 7 | 15/10A | Electric fuel pumps (supply)/volume control valve |
| 8 | 30A | Windshield wipers |
| 9 | 25A | Heated seats (driver and passenger) |
| 10 | 10A | Lumbar support (driver and passenger) |
| 11 | - | Not used |
| 12 | 40A | Ventilation blower |
| Fuse panel B (brown) | ||
| 1 | 15A | Fuel pump (6-cylinder) |
| 2 | 10A | O2 sensors (6-cylinder) |
| 3 | 5A | Mass airflow sensor (6-cylinder) |
| 4 | 10A | O2 sensors (6-cylinder) |
| 5 | 5A | Relay coil relay volume control valve (4-cylinder) |
| 6 | 10A | Secondary air pump valve (6-cylinder), O2 sensors (4-cylinder) |
| 7 | 10A | Positioning valves pre-wired engine harness |
| 8 | 20/30A | Ignition coils (4-cylinder)/ignition coils (6-cylinder) |
| 9 | 25A | Engine (control unit) |
| 10 | 10A | Water pump delayed-off |
| 11 | 5A | Feed (clutch pedal, brake pedal) |
| 12 | 10A | Activated charcoal filter/charge pressure control valve (4-cylinder) |
