Audi A4 Cabriolet (2009) – fuse box diagram
Year of manufacture: 209
Dashboard (driver’s side)
| Number | Electrical equipment | Ampere ratchets [A] |
| 1 | Air conditioner | 10 |
| 2) | Legroom lighting | 5 |
| 3) | Heated windshield washer nozzles | 5 |
| 4 | Radiator fan | 5 |
| 5 | Telephone, oil level sensor, multifunction switch, heated rear seat, shift gate | 10 |
| 6 | Air conditioner (air quality sensor), air pressure sensor | 5 |
| 7 | Electronic stabilization program (ESP), stop light switch, clutch pedal switch, steering angle sensor | 10 |
| 8 | Phone | 5 |
| 9 | Brake booster (vacuum pump) | 15 |
| 10 | Automatic headlight beam adjustment, automatic headlight range control, right | 5 |
| 11 | Airbag control, US front passenger seat recognition (bladder mat) | 10 |
| 12 | Diagnostic socket | 10 |
| 13 | Steering column module | 10 |
| 14 | Stop lights | 10 |
| 15 | Instrument cluster, navigation system | 10 |
| 16 | Garage door opener | 5 |
| 17 | Level, tire pressure monitoring, parking assistant, light / rain sensor | 10 |
| 18 | Automatic headlight range control, left | 5 |
| 19 | Fog lights | 15 |
| 20 | – | – |
| 21 | – | – |
| 22 | Doors | 15 |
| 23 | – | – |
| 24 | Central convenient electrical system | 20 |
| 25 | Heater blower | 30 |
| 26 | Rear window defogger | 30 |
| 27 | Trailer towing socket (controller) | 30 |
| 28 | Fuel pump | 20 |
| 29 | – | – |
| 30 | Power top control unit | 30 |
| 31 | Automatic transmission, mirror dimming, diagnostic socket | 15 |
| 32 | Towing kit | 15 |
| 33 | Lighter | 20 |
| 34 | Electrical socket | 20 |
| 35 | Trunk socket | 20 |
| 36 | Windshield wiper system | 30 |
| 37 | Windshield washer and headlight washer pump * | 30 |
| 38 | Central electrical system, anti-theft alarm, rear cover / trunk release | 15 |
| 39 | Radio | 20 |
| 40 | Horn | 25 |
| 41 | Auxiliary heating | 30 |
| 42 | Electronic stabilization program (ESP) | 25 |
| 43 | Engine timing | 15 |
| 44 | Seat heating | 35 |