Ford F-250 2012 Fuse Box Info
Fuse box location:
The fuse box is located in the passenger’s footwell.
Engine compartment fuse box:
Fuse Box Diagram | Layout
Passenger compartment fuse box:
| Fuse/Relay N° | Rating | Functions |
| 1 | 30A | Not used (spare) |
| 2 | 15A | Upfitter relay #4 |
| 3 | 30A | Passenger smart window |
| 4 | 10A | Telescoping mirror switch, Interior lights, Hood lamp |
| 5 | 20A | Moon roof |
| 6 | 5A | Driver seat module |
| 7 | 7.5A | Driver seat switch, Driver lumbar motor |
| 8 | 10A | Power mirror switch |
| 9 | 10A | Upfitter relay #3 |
| 10 | 10A | Run/accessory relay, Customer access feed |
| 11 | 10A | Instrument cluster |
| 12 | 15A | Interior lighting, Lighted running board lamps |
| 13 | 15A | Right turn signals and brake lamps, Right trailer tow (TT) stop turn relay |
| 14 | 15A | Left turn signals and brake lamps, Left TT stop turn relay |
| 15 | 15A | High-mounted stop lamps, Backup lamps, TT backup relay |
| 16 | 10A | Right low beam headlamp |
| 17 | 10A | Left low beam headlamp |
| 18 | 10A | Keypad illumination, Passive anti-theft indicator (PATS), Powertrain control module (PCM), Brake shift interlock |
| 19 | 20A | Subwoofer |
| 20 | 20A | Power door locks |
| 21 | 10A | Brake on/off switch |
| 22 | 20A | Horn |
| 23 | 15A | Not used (spare) |
| 24 | 15A | Steering wheel control module, Diagnostic connector, Power fold mirror relay, Remote keyless entry |
| 25 | 15A | Not used (spare) |
| 26 | 5A | Steering wheel control module |
| 27 | 20A | Amplifier |
| 28 | 15A | Ignition switch |
| 29 | 20A | SYNC, GPS module, Radio faceplate |
| 30 | 15A | Parking lamp relay, TT parking lamp relay |
| 31 | 5A | Trailer brake controller (brake signal), Customer access |
| 32 | 15A | Moon roof, Auto dimming mirrors, Power invertor, Driver and passenger door lock switch illumination |
| 33 | 10A | Restraint control module |
| 34 | 10A | Not used (spare) |
| 35 | 5A | Select shift switch, Reverse park aid module, Trailer brake control module |
| 36 | 10A | Fuel tank select switch |
| 37 | 10A | PTC heater |
| 38 | 10A | Radio faceplate |
| 39 | 15A | High beam headlamps |
| 40 | 10A | Parking lamps (in mirrors), Roof marker lamps |
| 41 | 7.5A | Passenger airbag deactivation indicator |
| 42 | 5A | Not used (spare) |
| 43 | 10A | Wiper relay |
| 44 | 10A | Upfitter switches |
| 45 | 5A | Not used (spare) |
| 46 | 10A | Climate control |
| 47 | 15A | Fog lamps, Fog lamp indicator (in switch) |
| 48 | 30A | Power windows switch, Power rear sliding window switch |
| 49 | - | Delayed accessory |
Engine compartment fuse box:
| Fuse/Relay N° | Rating | Functions |
| 1 | - | Blower motor |
| 2 | - | Not used |
| 3 | - | Urea heaters (diesel engine) |
| 4 | - | Not used |
| 5 | - | Rear window defroster |
| 6 | - | Not used |
| 7 | 50A | Rear window defroster |
| 8 | 30A | Passenger seat |
| 9 | 30A | Driver seat |
| 10 | - | Not used |
| 11 | - | Not used |
| 12 | 30A | Driver smart window |
| 13 | - | Not used |
| 14 | - | Not used |
| 15 | - | Fuel pump (diesel engine) |
| 16 | - | Not used |
| 17 | 15A | Heated mirror |
| 18 | - | Not used |
| 19 | - | Not used |
| 20 | - | Not used |
| 21 | - | Not used |
| 22 | 30A | Trailer tow electric brake |
| 23 | 40A | Blower motor |
| 24 | - | Not used |
| 25 | 30A | Wipers |
| 26 | 30A | Trailer tow park lamps |
| 27 | 25A | Urea heaters (diesel engine) |
| 28 | - | Buss bar |
| 29 | - | Trailer tow park lamps |
| 30 | - | A/C clutch |
| 31 | - | Wipers |
| 32 | - | Not used |
| 33 | 15A | Vehicle power (VPWR) 1 |
| 34 |
15A 20A |
VPWR 2 (diesel engine) VPWR 2 (gas engine) |
| 35 | 10A | VPWR 3 |
| 36 |
15A 20A |
VPWR 4 (diesel engine) VPWR 4 (gas engine) |
| 37 | 10A | VPWR 5 (diesel engine) |
| 38 | - | Powertrain control module (PCM) (diesel engine), Electronic control module (ECM) (gas engine) |
| 39 | 10A | 4x4 hub lock |
| 40 | 15A | 4x4 electronic lock |
| 41 | - | Not used |
| 42 | - | Not used |
| 43 | - | Not used |
| 44 | - | Not used |
| 45 | 10A | Run/start relay coil |
| 46 | 10A | Transmission control module (TCM) keep-alive power (diesel engine) |
| 47 | 10A | A/C clutch feed |
| 48 | - | Run/start |
| 49 | 10A | Rearview camera system |
| 50 | 10A | Blower motor relay coil |
| 51 | - | Not used |
| 52 | 10A | PCM/ECM/TCM run/start |
| 53 | 10A | 4x4 module |
| 54 | 10A | Anti-lock brake system (ABS) run/start |
| 55 | 10A | Rear window defroster coil, Battery charge coil |
| 56 | 20A | Passenger compartment fuse panel run/start feed |
| 57 | - | Fuel pump |
| 58 | - | Not used |
| 59 | - | Not used |
| 60 | - | Not used |
| 61 | - | Not used |
| 62 | - | Not used |
| 63 | - | Not used |
| 64 | - | Not used |
| 65 | - | Not used |
| 66 | 20A | Fuel pump |
| 67 | - | Not used |
| 68 | 10A | Fuel pump relay coil |
| 69 | - | Not used |
| 70 | 10A | Trailer tow backup lamp |
| 71 | 10A | Canister vent (gas engine) |
| 72 | 10A | PCM/ECM relay coil feed keep-alive power |
| 73 | - | Not used |
| 74 | - | Trailer tow left-hand stop/turn |
| 75 | - | Trailer tow right-hand stop/turn |
| 76 | - | Backup lamp |
| 77 | - | Not used |
| 78 | - | Not used |
| 79 | - | Not used |
| 80 | - | Not used |
| 81 | - | Not used |
| 82 | 20A | Auxiliary power point #2 |
| 83 | 20A | Auxiliary power point #1 |
| 84 | 30A | 4x4 shift motor |
| 85 | 30A | Heated/cooled seats |
| 86 | 25A | ABS coil feed |
| 87 | 20A | Auxiliary power point #5 |
| 88 | - | Not used |
| 89 | 40A | Starter motor |
| 90 | 25A | Trailer tow battery charge |
| 91 | - | Not used |
| 92 | 20A | Auxiliary power point #4 |
| 93 | 20A | Auxiliary power point #3 |
| 94 | 25A | Upfitter #1 |
| 95 | 25A | Upfitter #2 |
| 96 | 50A | ABS pump |
| 97 | 40A | Invertor |
| 98 | - | Not used |
| 99 | - | Not used |
| 100 | 25A | Trailer tow turn signals |
| 101 | - | Starter |
| 102 | - | Trailer tow battery charge |
| 103 | - | Not used |
| 104 | - | Not used |
| 105 | - | Not used |
| 106 | - | Not used |
| 107 | - | Not used |
