Ford Super Duty – Changing a fuse
See also: Ford Trucks Service Repair Manuals PDF
Ford Super Duty
Fuses
WARNING: Always replace a fuse with one that has the specified amperage rating. Using a fuse with a higher amperage rating can cause severe wire damage and could start a fire.
If electrical components in the vehicle are not working, a fuse may have blown. Blown fuses are identified by a broken wire within the fuse. Check the appropriate fuses before replacing any electrical components.
Standard Fuse Amperage Rating and Color
| COLOR | |||||
| Fuse rating | Mini fuses | Standard fuses | Maxi fuses | Cartridge maxi fuses | Fuse link cartridge |
| 2A | Grey | Grey | — | — | — |
| 3A | Violet | Violet | — | — | — |
| 4A | Pink | Pink | — | — | — |
| 5A | Tan | Tan | — | — | — |
| 7.5A | Brown | Brown | — | — | — |
| 10A | Red | Red | — | — | — |
| 15A | Blue | Blue | — | — | — |
| 20A | Yellow | Yellow | Yellow | Blue | Blue |
| 25A | Natural | Natural | — | Natural | Natural |
| 30A | Green | Green | Green | Pink | Pink |
| 40A | — | — | Orange | Green | Green |
| 50A | — | — | Red | Red | Red |
| 60A | — | — | Blue | Yellow | Yellow |
| 70A | — | — | Tan | — | Brown |
| 80A | — | — | Natural | Black | Black |
Fuse Specification Chart
Power Distribution Box
WARNING: Always disconnect the battery before servicing high current fuses.
WARNING: To reduce risk of electrical shock, always replace the cover to the power distribution box before reconnecting the battery or refilling fluid reservoirs.
The power distribution box is located in the engine compartment. It has high-current fuses that protect your vehicle’s main electrical systems from overloads.
Power Distribution Box
The high-current fuses are coded as follows:
| Fuse or relay location | Fuse amp rating | Protected circuits |
| 1 | Relay | Blower motor |
| 2 | — | Not used |
| 3 | Relay | Urea heaters (diesel engine) |
| 4 | — | Not used |
| 5 | Relay | Rear window defroster, Heated mirrors |
| 6 | — | Not used |
| Fuse or relay location | Fuse amp rating | Protected circuits |
| 7 | 50A* | Rear window defroster, Heated mirrors |
| 8 | 30A* | Passenger seat |
| 9 | 30A* | Driver seat |
| 10 | — | Not used |
| 11 | — | Not used |
| 12 | 30A* | Smart window motor |
| 13 | — | Not used |
| 14 | — | Not used |
| 15 | Diode | 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 | Relay | Trailer tow park lamps |
| 30 | Relay | A/C clutch |
| 31 | Relay | Wipers |
| 32 | — | Not used |
| 33 | 15A** | Vehicle power 1 |
| 34 | 15A** | Vehicle power 2 (diesel engine) |
| 20A** | Vehicle power 2 (gas engine) | |
| 35 | 10A** | Vehicle power 3 |
| Fuse or relay location | Fuse amp rating | Protected circuits |
| 36 | 15A** | Vehicle power 4 (diesel engine) |
| 20A** | Vehicle power 4 (gas engine) | |
| 37 | 10A** | Vehicle power 5 (diesel engine) |
| 38 | Relay | Powertrain control module (diesel engine), Electronic control module (gas engine) |
| 39 | 10A** | 4×4 hub lock |
| 40 | 15A** | 4×4 electronic lock |
| 41 | — | Not used |
| 42 | 20A** | Rear heated seats |
| 43 | — | Not used |
| 44 | — | Not used |
| 45 | 10A** | Run/start relay coil |
| 46 | 10A** | Transmission control module keep-alive power (diesel engine) |
| 47 | 10A** | A/C clutch feed |
| 48 | Relay | Run/start |
| 49 | 10A** | Rearview camera system |
| 50 | 10A** | Blower motor relay coil |
| 51 | — | Not used |
| 52 | 10A** | Powertrain control module / Electronic control module / Transmission control module run/start |
| 53 | 10A** | 4×4 module |
| 54 | 10A** | Anti-lock brake system run/start |
| 55 | 10A** | Rear window defroster coil, Battery charge coil |
| 56 | 20A** | Passenger compartment fuse panel run/start feed |
| 57 | Relay | Fuel pump |
| 58 | — | Not used |
| Fuse or relay location | Fuse amp rating | Protected circuits |
| 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** | Powertrain control module / Electronic control module relay coil feed keep-alive power |
| 73 | — | Not used |
| 74 | Relay | Trailer tow left-hand stop/turn |
| 75 | Relay | Trailer tow right-hand stop/turn |
| 76 | Relay | 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* | 4×4 shift motor |
| 85 | 30A* | Heated/cooled seats |
| 86 | 25A* | Anti-lock brake system coil feed |
| 87 | 20A* | Auxiliary power point #5 |
| Fuse or relay location | Fuse amp rating | Protected circuits |
| 88 | 20A* | Auxiliary power point #6 |
| 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* | Anti-lock brake system pump |
| 97 | 40A* | Inverter |
| 98 | — | Not used |
| 99 | 40A* | Instrument panel power inverter |
| 100 | 25A* | Trailer tow turn signals |
| 101 | Relay | Starter |
| 102 | Relay | Trailer tow battery charge |
| 103 | — | Not used |
| 104 | — | Not used |
| 105 | — | Not used |
| 106 | — | Not used |
| 107 | — | Not used |
| * Cartridge fuses ** Mini fuses | ||
Passenger Compartment Fuse Panel
Passenger Compartment Fuse Panel
The fuse panel is located in the passenger’s footwell. Remove the panel cover to access the fuses.
To remove the fuse panel cover, pull the panel toward you. When the clips of the panel disengage, let the panel fall easily.
To remove a fuse, use the fuse puller tool provided on the fuse panel cover.
Fuse box
The fuses are coded as follows.
| Fuse or relay location | Fuse amp rating | Protected circuits |
| 1 | 30A | Not used (spare) |
| 2 | 15A | Upfitter relay #4 |
| Fuse or relay location | Fuse amp rating | Protected circuits |
| 3 | 30A | Smart window motor |
| 4 | 10A | Interior lights, Hood lamp |
| 5 | 20A | Moonroof |
| 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 stop turn relay |
| 14 | 15A | Left turn signals and brake lamps,
Left trailer tow stop turn relay |
| 15 | 15A | High-mounted stop lamps, Backup lamps, Trailer tow backup relay, Reverse signal interior mirror |
| 16 | 10A | Right low beam headlamp |
| 17 | 10A | Left low beam headlamp |
| 18 | 10A | Keypad illumination, Passive anti-theft indicator, Powertrain control module, Brake shift interlock |
| 19 | 20A | Subwoofer, Amplifier |
| 20 | 20A | Power door locks |
| 21 | 10A | Brake on/off switch |
| 22 | 20A | Horn |
| 23 | 15A | Not used (spare) |
| Fuse or relay location | Fuse amp rating | Protected circuits |
| 24 | 15A | Steering wheel control module, Diagnostic connector, Power fold mirror relay, Remote keyless entry, Electronic finish panel |
| 25 | 15A | Not used (spare) |
| 26 | 5A | Steering wheel control module |
| 27 | 20A | Not used (spare) |
| 28 | 15A | Ignition switch |
| 29 | 20A | SYNC, GPS module, Radio faceplate |
| 30 | 15A | Parking lamp relay, Trailer tow parking lamp relay |
| 31 | 5A | Trailer brake controller (brake
signal), Customer access |
| 32 | 15A | Moonroof motor, Telescoping mirror switch, Auto dimming mirrors, Power inverter, Driver and passenger door lock switch illumination, Rear heated seat switch illumination |
| 33 | 10A | Restraint control module |
| 34 | 10A | Heated steering wheel module, Rear heated seats module |
| 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 | AM/FM radio faceplate |
| 39 | 15A | High beam headlamps |
| 40 | 10A | Parking lamps (in mirrors), Roof marker lamps |
| Fuse or relay location | Fuse amp rating | Protected circuits |
| 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 Circuit Breaker | Power windows switch, Power rear sliding window switch |
| 49 | Relay | Delayed accessory |
