In this article, we focus on the second-generation Audi TT (chassis code 8J) , a refined and sporty luxury coupe and roadster produced from 2006 to 2014 . Praised for its iconic design, impressive performance, and advanced features, the second-generation TT elevated the model’s reputation as a standout in the sports car segment.
Here, you will find detailed fuse box diagrams for Audi TT models produced in 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 and 2014 . These diagrams offer critical insights into the vehicle’s electrical systems, helping owners and technicians understand the assignment of each fuse (fuse layout). This information is essential for troubleshooting electrical issues, performing maintenance, or carrying out repairs efficiently.
This guide serves as a practical resource for understanding the electrical system of the second-generation Audi TT, equipping owners with the knowledge they need to maintain the reliability, functionality, and performance of this iconic sports car.
The cigar lighter (power outlet) fuses in the Audi TT are fuse No.30 and fuse No.38 (applicable since 2010 ) located in the Instrument Panel Fuse Box .
Fuse Data
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The fuse block is located at the front left side of the cockpit.
Assignment of the fuses on the left side of the dashboard
Fuse Data
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№ Description Amps 1 Engine relay, fuel tank control unit, Airbag Off light, light switch (switch illumination), diagnostic connector 10 2 ABS, ASR, ESP/ESC, brake light switch 5 3 AFS headlight (left) 5 4 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 Automatic headlight range control, AFS headlight (right) / manual headlight range control, halogen headlights 5/10 6 Control unit for CAN data transfer (gateway), electromechanical steering, automatic transmission shift gate 5 7 Acoustic Park Assist, automatic dipping interior rear view mirror, garage door opener, heatable windshield washer nozzles, washer pump, wind deflector relay (Roadster) 5 8 Haldex clutch 5/10 9 Control unit Audi magnetic ride 5 10 Airbag control unit 5 11 Mass airflow sensor, crankcase heating 5/10 12 Door control unit (central locking driver/passen-ger) 10 13 Diagnostic connector 10 14 Rain sensor, automatic transmission shift gate 5 15 Roof light (interior lighting) 5 16 A/C system (control unit) 10 17 Tire pressure monitoring system (control unit) 5 18 Not used – 19 Not used – 20 Not used – 21 Fuel injectors (gasoline engine) 10 22 Wind deflector (Roadster) 30 23 Horn 20 24 Transmission (control unit) 15 25 Heater rear window Coupe/heated rear window Roadster 30/20 26 Driver’s side power window 30 27 Passenger’s side power window 30 28 Not used – 29 Washer pump 15 30 Cigarette lighter 20 31 Starter 40 32 Steering column module 5 33 Instrument cluster 5 34 Radio navigation system, radio 15/20 35 Audio amplifier 30 36 Engine (control unit) 10 37 CAN (Gateway) 5 38 2008-2009: Not used; 20 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 SDARS tuner, cell phone package, TV tuner 5 48 VDA interface 5 49 Not used –
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Fuse Data
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Assignment of the under-hood fuses.
Fuse Data
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№ Description Amps Fuse holder A (black) A1 Not used – A2 Not used – A3 Not used – A4 Not used – A5 Anti-theft warning system (sensor), anti-theft warning system (horn) 5 A6 Headlamp washer system 30 A7 Electric fuel pumps (supply) / Volume control valve / Interrelais (5-cyl.) 15/10 A8 Windshield wipers 30 A9 Heated seats (driver and passenger) 25 A10 Lumbar support (driver and passenger) 10 A11 Not used A12 Ventilation blower 40 Fuse holder B (brown) B1 Fuel pump (6-cylinder) 15 B2 O2 sensors (6-cylinder) / Electric fuel pump (5-cyl.) 10/30 B3 Mass airflow sensor (6-cylinder) 5 B4 O2 sensors (6-cylinder) 10 B5 Relay coil relay volume control valve (4-cylinder) / O2 sensors (5-cyl.) 5/10 B6 Secondary air pump valve (6-cylinder), O2 sensors (4-cyl., 5-cyl.) 10 B7 Positioning valves pre-wired engine harness 10 B8 Ignition coils (4-cyl., 5-cyl.)/ignition coils (6-cylinder) 20/30 B9 Engine (control unit) 25 B10 Water pump delayed-off 10 B11 Feed (clutch pedal, brake pedal) 5 B12 Activated charcoal filter/charge pressure control valve (4-cylinder) 10
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