Ford F-150 2021 Fuse Box Info
Passenger compartment fuse box location:
The fuse box is in the right-hand side of the passenger footwell behind a trim panel.
Engine compartment fuse box location:
Fuse Box Diagram | Layout
Passenger compartment fuse box:
| Fuse/Relay N° | Rating | Functions |
| 1 | - | Not used |
| 2 | 10A | Delayed accessory feed |
| 3 | 7.5A | Wireless charger |
| 4 | 20A | Not used |
| 5 | - | Not used |
| 6 | 10A | Driver power window switch |
| 7 | 10A | Gear shift module |
| 8 | 5A | Cell phone passport module |
| 9 | 5A | Combined sensor module |
| 10 | - | Not used |
| 11 | - | Not used |
| 12 | 7.5A | Enhanced central gateway, Climate control |
| 13 | 7.5A | Instrument cluster, Steering column control module |
| 14 | 15A | Not used (spare) |
| 15 | 15A | Integrated control panel, SYNC |
| 16 | - | Not used |
| 17 | 7.5A | Headlamp control module |
| 18 | 7.5A | Not used |
| 19 | 5A | Headlamp switch |
| 20 | 5A | Passive start, Ignition switch, Key inhibit solenoid |
| 21 | 5A | Trailer brake switch |
| 22 | 5A | Not used |
| 23 | 30A | Driver door control module |
| 24 | 30A | Moonroof |
| 25 | 20A | Not used |
| 26 | 30A | Passenger door control module |
| 27 | 30A | Not used |
| 28 | 30A | Amplifier |
| 29 | 15A | 12 inch display, Adjustable pedals |
| 30 | 5A | Not used |
| 31 | 10A | RF receiver, Driver monitor, Terrain management switch |
| 32 | 20A | Audio control module |
| 33 | - | Not used |
| 34 | 30A | Run-start relay |
| 35 | 5A | 400 watt inverter run/start |
| 36 | 15A | Auto-dimming interior mirror. Rear heat seat run/start, Adaptive front steering run/start, Heated wheel (vehicles without adaptive front steering) |
| 37 | 20A | Advanced driver-assistance systems |
| 38 | 30A | Rear power windows |
Engine compartment fuse box:
| Fuse/Relay N° | Rating | Functions |
| 1 | 40A | Body control module - battery power in feed 1 |
| 3 | 40A | Body control module - battery power in feed 2 |
| 4 | 30A | Fuel pump |
| 5 | 5A | Keep-alive power, Powertrain control module (hybrid) |
| 6 | 25A | Powertrain control module power |
| 7 | 20A | Powertrain control module power |
| 8 |
20A 10A |
Powertrain control module power (hybrid) Powertrain control module power (gas, diesel) |
| 9 | 20A | Powertrain control module power |
| 10 | 20A | Powertrain control module power (diesel) |
| 11 | 30A | Starter motor |
| 13 | 40A | Blower motor |
| 15 | 25A | Horn |
| 19 | 20A | Snow plow switch, Rear heated seats (gas) |
| 21 | 10A | Headlamp run/start feed |
| 22 | 10A | Electronic power assist steering |
| 23 | 10A | Electric brake boost |
| 24 | 10A | Powertrain control module (gas, hybrid), Transmission control module (diesel), Glow plug control module (diesel) |
| 25 | 10A | Center high-mounted stop lamp camera, Trailer camera, 2 kW inverter, 24 V alternator - run/start feed, Analog rear video camera |
| 28 | 50A | Electric brake boost |
| 29 | 50A | Electric brake boost |
| 30 | 40A | Driver power seat |
| 31 | 30A | Passenger power seat |
| 32 | 20A | Auxiliary power point |
| 33 | 20A | Auxiliary power point, USB smart charger |
| 34 | 20A | Auxiliary power point |
| 37 | 30A | Tailgate module |
| 38 | 40A | Climate controlled seat module, Power running boards |
| 41 | 25A | Power sliding back window |
| 42 | 30A | Trailer brake control module |
| 47 | 50A | Cooling fan |
| 48 | 20A | Rear heated seats (diesel, hybrid) |
| 49 | 50A | Cooling fan |
| 50 | 40A | Heated backlight (gas, hybrid) |
| 55 | 30A | Trailer tow park lamps |
| 56 | 20A | Trailer tow stop and turn lamps |
| 58 | 10A | Trailer tow backup lamps |
| 64 | 25A | Four-wheel drive |
| 65 | 15A | Transmission control module (diesel) |
| 67 | 20A | Transmission run/start |
| 69 | 30A | Left-hand windshield wiper |
| 80 | 15A | Not used (spare) |
| 82 | 25A | Four-wheel drive |
| 83 | 50A | Supplemental heater (diesel) |
| 84 | 50A | Supplemental heater (diesel) |
| 85 | 50A | Supplemental heater (diesel) |
| 86 | 25A | Selective catalytic reduction system |
| 91 | 20A | Trailer tow light module |
| 95 | 15A | Powertrain control module power (hybrid) |
| 98 | 10A | Powertrain control module power (hybrid), Coolant pumps (hybrid) |
| 100 | 15A | Left-hand headlamps |
| 101 | 15A | Right-hand headlamps |
| 105 | 50A | Active front steering |
| 107 | 30A | Trailer tow battery charge |
| 121 | 30A | Fuel filter heater (diesel) |
| 124 | 5A | Rain sensor module |
| 125 | 10A | USB smart charger |
| 134 | 25A | Multi-contour seats relay |
| 138 | 10A | Tailgate release |
| 139 | 5A | USB smart charger |
| 146 | 15A | Traction battery control module |
| 159 | 5A | DC/DC power (hybrid) |
| 160 | 10A | Smart data link control |
| 162 | 7.5A | Not used (spare) |
| 168 | 20A | Traction battery control module (hybrid) |
| 169 | 10A | Motor electric cool pump (hybrid) |
| 170 | 10A | Pedestrian alert control module (hybrid), Traction battery control module (hybrid), Electric motor cool pump (hybrid) |
| 202 | 60A | Body control module B+ |
| 210 | 30A | Body control module start stop |
| R04 | - | Electronic fan relay 1 |
| R06 | - | Electronic fan relay 3 |
| R35 | - | Supplemental heater |
| R36 | - | Supplemental heater |
