The first generation of the Audi TT is designated as the 8N. This series was produced in 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005. Then, after restyling, the production of the second generation of the Audi TT – 8J began in 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 and 2014. Our article provides general information about relays and fuses audi TT with box diagrams and element assignments.
Contents
Layout of fuse boxes and relays
- front left junction box in the engine compartment;
- fuse board, on the instrument panel to the left of the rack;
- Onboard supply control unit and additional relay board on the left under the dashboard;
- main fuse box directly at the battery;
- additional relay board on the right in the luggage compartment under the upholstery.
Passenger compartment fuse box on the instrument panel
Check the exact description of the fuses for your vehicle with the description on the back of the protective cover.
for cars manufactured before 2005 (8N)
Real photo
Diagram
Designation
1.heated windshield washer injectors, side mirror heaters
2. turn signals
3. glove compartment lighting, climate control, fog lamp relay, parking lamps
4. license plate lighting
5. seat heating, bulb monitor (xs), some kind of connection for cruise control , switches and motors for side mirrors, climate control
6. central locking system
7. reversing lamps
8. telephone
9. ABS brakes
10. engine timing
11. control panel
12. on-board computer, telephone
13. brake lamps
14. central locking system
15 .control panel
16.magnetic clutch, electric water pump
17. fluorescent lamps (for Canada only)
18. high beam, right
19. high beam, left
20. low beam, right automatic headlight regulator
21. low beam, left automatic headlight regulator
22. side light bulbs (front and rear) right
23. bulbs side lights (front and rear) left
24. brushes and washers
25. hot air blower (climate control)
26. rear window heating
27. not used
28. fuel pump
29. engine timing
30. not used
31. Haldex clutch (kw only)
32. engine fuel injector
33. headlight washer relay
34. engine timing
35. not used
36. fog lamps
37. S-contact (radio)
38. central locking
system 39. Emergency stop system
40. Signal
41. cigarette lighter
42. Radio, interior anti-theft sensor
43. Engine timing
44. seat heating
The fuse number 41 is responsible for the cigarette lighter.
for cars manufactured after 2005 (8J)
Diagram
Assignment
| 1 | 10A engine relay, fuel control unit, engine control unit, airbag-off lamp, light switch (switch illumination), diagnostic socket |
| 2 | 5A ABS, ASR, ESP, brake light switch |
| 3 | 5A AFS headlights (left) |
| 4 | 5A oil level sensor (WIV), tire pressure indication, switch for electronic stability control (ESP), AFS headlights (control unit), air conditioning (pressure sensor), reversing light switch |
| 5 | 5 / 10A automatic headlight range control, AFS headlights (right) / manual headlight range control, halogen headlights |
| 6 | 5A CAN data transmission control unit (Gateway), electromechanical power steering, automatic transmission shifter |
| 7 | 5A parking assist, auto-shielding interior rearview mirror, garage door opener, heated washer jets, washer pump, windscreen relay (Roadster) |
| 8 | 5A Haldex coupling |
| 9 | 5A Audi magnetic rade control unit |
| 10 | 5A airbag control unit |
| 11 | 5 / 10A air flow meter, crankcase heating |
| 12 | 10A door control unit (central locking system driver / front passenger) |
| 13 | 10A diagnostic socket |
| 14 | 5A rain sensor, automatic transmission shifter |
| 15 | 5A ceiling light |
| 16 | 10A air conditioner (control unit) |
| 17 | 5A tire monitoring indication (control unit) |
| 18 | absent |
| 19 | absent |
| 20 | absent |
| 21 | 10A valve injectors (petrol engine) |
| 22 | 30A windscreen (Roadster) |
| 23 | 20A beep |
| 24 | 15A transmission (control unit) |
| 25 | 30 / 20A heated rear window for Coupe / Roadster |
| 26 | 30A power window driver’s side |
| 27 | 30A power window front passenger side |
| 28 | absent |
| 29 | 15A windscreen 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 | 5А CAN (Gateway) |
| 38 | 20A cigarette lighter |
| 39 | absent |
| 40 | absent |
| 41 | absent |
| 42 | absent |
| 43 | absent |
| 44 | absent |
| 45 | absent |
| 46 | absent |
| 47 | 5A SDARS tuner, mobile phone connection preparation, TV tuner |
| 48 | 5A VDA interface |
| 49 | absent |
The fuse number 30 for 20A is responsible for the cigarette lighter.
Engine compartment left side fuse box (8J)
Designation
| fuse box (black) | |
| 1 | absent |
| 2 | absent |
| 3 | absent |
| 4 | absent |
| 5 | 5A burglar alarm (sensor), burglar alarm (beep) |
| 6 | 30A headlight cleaner |
| 7 | 15 / 10A electric fuel pumps (feed) / fuel flow control valve |
| 8 | 30A wiper |
| 9 | 25A seat heating (driver and front passenger) |
| 10 | 10A lumbar support (driver and front passenger) |
| 11 | absent |
| 12 | 40A fan |
| fuse box (brown) | |
| 1 | 15A fuel pump (6-cyl.) |
| 2 | 10A lambda probes (6-cyl.) |
| 3 | 5A air flow meter (6-cyl.) |
| 4 | 10A lambda probes (6-cyl.) |
| 5 | 5A relay coil, fuel control valve relay (4-cyl.) |
| 6 | 10A secondary air pump valve (6-cyl.), Lambda probes (4-cyl.) |
| 7 | 10A pre-engine wiring installation valves |
| 8 | 20 / 30A ignition coils (4-cyl.) / Ignition coils (6-cyl.) |
| 9 | 25A engine (control unit) |
| 10 | 10A water return pump |
| 11 | 5A power supply (clutch pedal, brake pedal) |
| 12 | 10A activated carbon filter / boost pressure regulation – valve (4-cyl.) |
Main battery fuse box
Additional Information
Video about replacing the fuse on the main unit to restore the radiator fan.
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Any questions left, ask them in the comments!
Hi, Thanks for the info. I have the user guide with all the fuses but WHERE IS THE FUSE FOR THE BOOT LOCK. The user guide does not assign any fuse to the boot. Mine does not open or operate from the key fob or the door switch/. Any help would be appreciated
I’m trying to close the soft top on an Audi Tt convertible, I just wanted a diagram specifically for the fuses for the opening and close of the soft top… what is the fuses in the trunk passenger side (that diagram)