2015 Audi A3 8V Fuse Box Diagram
The 2015 Audi A3 (8V) has 2 fuse boxes. Choose the one you’re looking at.
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Instrument panel fuse box (fuse holder C)
Model year 2015 adds two entries to the cabin holder that earlier editions left blank: F1 becomes the SCR system's engine components at 30 A and F20 the tank system at 7.5 A, with the tank system also joining F19's convenience-key module. This is the last US edition to print ratings at all, so its values carry forward to the years after it.
The holder is behind the steering-column trim on a left-hand-drive car — the panel with the AIRBAG label, pulled away from its lower right corner — or behind a glove-box cover on a right-hand-drive one. Plate B8V-0217 numbers fifty-three positions: F1 and F2 on end at the top corners with relays R1 to R3 between, the large F3 beside the rows F4 to F10 and F11 to F14, then F15 to F21 with F22 under them; the large F23, the row F24 to F28, F29 over F30, the large F31; F32 to F37 and F38 to F42 with F40 half a fuse lower; and along the bottom the large F43, F44 to F49, the large F50 with F52 and F51 beneath, and F53 on the right lobe above relays R5, R6 and R4. Rows read left to right.
| No. | Function | Amp | Description |
|---|---|---|---|
| 1 | 30 AATO | Engine components (SCR/AdBlue system) | |
| 2 | 10 AMINI | Seat adjustment | |
| 3 | 40 AJCASE | Hydraulic pump for the soft top (Cabriolet) | |
| 4 | 7.5 AMINI | MMI control console and MMI components | |
| 5 | 5 AMINI | Gateway (data bus diagnostic interface) | |
| 6 | 5 AMINI | Anti-theft alarm system | |
| 7 | 10 AMINI | Air conditioner/heater control panel, selector lever (automatic gearbox), auxiliary heating, relay coil for the rear window heating | |
| 8 | 10 AMINI | Diagnostic connector, electronic parking brake switch, light switch, rain/light sensor, interior lighting | |
| 9 | 1 AMINI | Steering column switch module (1 A in every Audi edition; one fuse database prints 10 A) | |
| 10 | 5 AMINI | Display | |
| 11 | 25 AATO | Reversible belt tensioner, driver's side | |
| 12 | 15 AATO | MMI system (15 A or 20 A depending on equipment) | |
| 13 | 20 AATO | Control unit for suspension control (adaptive dampers) | |
| 14 | 30 AATO | Air conditioner blower (fresh air blower) | |
| 15 | 10 AMINI | Electronic steering column lock | |
| 16 | 7.5 AMINI | MMI system | |
| 17 | 5 AMINI | Instrument cluster | |
| 18 | 7.5 AMINI | Reversing camera | |
| 19 | 7.5 AMINI | Convenience key system control module, tank system | |
| 20 | 7.5 AMINI | Tank system (single source: 2015 US edition) | |
| 21 | Not used | ||
| 22 | Not used | ||
| 23 | 40 AJCASE | Exterior lighting, right side (vehicle electrical system control module) | |
| 24 | 20 AATO | Panorama roof; soft top control unit and soft top lock (Cabriolet) (20 A or 30 A depending on equipment) | |
| 25 | 30 AATO | Driver's side door(s): electric windows and door control unit | |
| 26 | 30 AATO | Seat heating | |
| 27 | 30 AATO | Sound amplifier | |
| 28 | 5 AATO | Soft top control unit, electronics (Cabriolet) | |
| 29 | 7.5 AMINI | Interior lights | |
| 30 | Not used | ||
| 31 | 40 AJCASE | Exterior lighting, left side (vehicle electrical system control module) | |
| 32 | 7.5 AMINI | Driver assistance systems | |
| 33 | 5 AMINI | Airbag control unit | |
| 34 | 7.5 AMINI | Button/switch illumination, neck heating relay coil (Cabriolet) and socket relay, interior sound, reversing light switch, temperature sensor, oil level sensor | |
| 35 | 10 AMINI | Diagnostics, headlight range control, air quality sensor, automatic anti-dazzle mirrors | |
| 36 | 15 AMINI | Cornering light, right / LED headlight, right | |
| 37 | 15 AMINI | Cornering light, left / LED headlight, left | |
| 38 | Not used | ||
| 39 | 30 AATO | Front passenger's side door(s): electric windows and door control unit | |
| 40 | 20 AATO | Cigarette lighter and 12 V sockets | |
| 41 | 25 AATO | Reversible belt tensioner, front passenger's side | |
| 42 | 40 AATO | Central locking system | |
| 43 | 30 AJCASE | Windscreen washer system | |
| 44 | 15 AATO | Four-wheel drive (quattro) control unit | |
| 45 | 15 AATO | Electrically adjustable seat, driver's side (power seats also have self-resetting circuit breakers) | |
| 46 | Not used | ||
| 47 | 15 AATO | Rear window wiper | |
| 48 | Not used | ||
| 49 | 5 AMINI | Starter relays, clutch sensor | |
| 50 | Not used | ||
| 51 | Not used | ||
| 52 | Not used | ||
| 53 | 30 AATO | Rear window heating |
Engine compartment fuse box (fuse holder B)
Three columns of blade fuses make up most of this holder and are read from the top down: F15 to F21 on the left, F31 to F38 in the middle, F3 to F10 on the right. Around them sit the six green JCase cartridges — F14 at the top left with the blade F13 and relay R4, F2 and F1 at the top right, F12 and F11 between relays R3 and R5 in the band beneath, and F24 at the bottom next to relay R7. F22 and F23 are stacked in the bottom left corner, relay R6 lies along the bottom edge, and six bolt-down links run across the top of the plate.
The holder is fuse holder B, in the left of the engine compartment under a snap-off cover with the fuse clip inside it. The model-year 2015 US book is the last American edition to print ratings, and it is the source for the engine-dependent values on F5 (tank system) and F9 (exhaust flap, glow-plug control, SULEV valve). F37, the auxiliary heating position, appears in no US edition at all and is carried here from the European handbook.
| No. | Function | Amp | Description |
|---|---|---|---|
| 1 | 40 AJCASE | ESC (ABS) control unit | |
| 2 | 40 AJCASE | ESC (ABS) control unit | |
| 3 | 15 AATO | Engine control unit, petrol or diesel (15 A or 30 A depending on engine) | |
| 4 | 5 AATO | Engine cooling, engine components, supplementary heater relay coils, secondary air pump relay (5 A or 10 A depending on engine) | |
| 5 | 7.5 AATO | Engine components, tank system (7.5, 10 or 15 A depending on engine) | |
| 6 | 5 AATO | Brake light sensor | |
| 7 | 7.5 AATO | Engine components, coolant pumps (7.5, 10 or 15 A depending on engine) | |
| 8 | 10 AATO | Lambda (oxygen) sensor heating (10 A or 15 A depending on engine) | |
| 9 | 5 AATO | Engine components, exhaust flap, glow time control module, SULEV valve (5, 10 or 20 A depending on engine) | |
| 10 | 15 AATO | Fuel injectors, fuel pump control unit (15 A petrol, 20 A diesel) | |
| 11 | 40 AJCASE | Supplementary (auxiliary air) heater, heating element 2 | |
| 12 | 40 AJCASE | Supplementary (auxiliary air) heater, heating element 3 | |
| 13 | 15 AATO | Automatic gearbox (S tronic mechatronics) control unit (15 A or 30 A depending on gearbox) | |
| 14 | Not used | ||
| 15 | 15 AATO | Horn | |
| 16 | 7.5 AATO | Ignition coils (20 A) or CNG shut-off valve on the g-tron (7.5 A) | |
| 17 | 7.5 AATO | ESC control unit, engine control unit | |
| 18 | 5 AATO | Terminal 30 reference voltage | |
| 19 | 30 AATO | Windscreen wipers | |
| 20 | 10 AATO | Horn (the anti-theft alarm horn: the 2017+ editions name it the anti-theft alarm system) | |
| 21 | Not used | ||
| 22 | 5 AATO | Terminal 50, diagnostics | |
| 23 | 30 AATO | Starter | |
| 24 | 40 AJCASE | Supplementary (auxiliary air) heater, heating element 1 | |
| 31 | 15 AATO | Vacuum pump | |
| 32 | 5 AATO | LED headlights | |
| 33 | Not used | ||
| 34 | Not used | ||
| 35 | Not used | ||
| 36 | Not used | ||
| 37 | 20 AATO | Auxiliary heating (parking heater); not listed in the 2015-2016 US editions | |
| 38 | Not used |