If you have a 2021, 2022, or 2023 Ford F-150, your truck’s electrical system powers everything—from the radio to the turn signals. When something stops working, it’s often just a blown fuse.
But which fuse is it, and what does it control?
This guide makes it easy. You’ll find clear diagrams showing where the fuse boxes are and what each fuse controls, so you can quickly fix any electrical issue.
Table of Contents
2021-2022 Ford F-150 Fuse Box Diagram
The Ford F-150 built in the years 2021 and 2022 consists of two fuse box layouts: Under Hood Fuse Box and Body Control Module Fuse Box.
Under Hood Fuse Box
Note: In the event that you need to disconnect and reconnect the battery, it's important to note that certain features may require resetting. This step is necessary to restore their functionality.
| Fuse Location | Fuse Rating | Protected Component |
| 1 | 40 A | Body control module – battery power in feed 1. |
| 3 | 40 A | Body control module – battery power in feed 2. |
| 4 | 30 A | Fuel pump. |
| 5 | 5 A | Keep-alive power. Powertrain control module (hybrid). |
| 6 | 25 A | Powertrain control module power. |
| 7 | 20 A | Powertrain control module power. |
| 8 | 20 A | Powertrain control module power (hybrid). |
| 10 A | Powertrain control module power (gas, diesel). | |
| 9 | 20 A | Powertrain control module power. |
| 10 | 20 A | Powertrain control module power (diesel). |
| 11 | 30 A | Starter motor. |
| 13 | 40 A | Blower motor. |
| 15 | 25 A | Horn. |
| 19 | 20 A | Snow plow switch. Rear heated seats (gas). |
| 21 | 10 A | Headlamp run/start feed. |
| 22 | 10 A | Electronic power assist steering. |
| 23 | 10 A | Electric brake boost. |
| 24 | 10 A | Powertrain control module (gas, hybrid). Transmission control module (diesel). Glow plug control module (diesel). |
| 25 | 10 A | Center high-mounted stop lamp camera. Trailer camera. 2 kW inverter. 24 V alternator – run/start feed. Analog rear video camera. |
| 28 | 50 A | Electric brake boost. |
| 29 | 50 A | Electric brake boost. |
| 30 | 40 A | Driver power seat. |
| 31 | 30 A | Passenger power seat. |
| 32 | 20 A | Auxiliary power point. |
| 33 | 20 A | Auxiliary power point. USB smart charger. |
| 34 | 20 A | Auxiliary power point. |
| 37 | 30 A | Tailgate module. |
| 38 | 40 A | Climate-controlled seat module. Power running boards. |
| 41 | 25 A | Power sliding back window. |
| 42 | 30 A | Trailer brake control module. |
| 47 | 50 A | Cooling fan. |
| 48 | 20 A | Rear heated seats (diesel, hybrid) |
| 49 | 50 A | Cooling fan. |
| 50 | 40 A | Heated backlight (gas, hybrid). |
| 55 | 30 A | Trailer tow park lamps. |
| 56 | 20 A | Trailer tow stop and turn lamps. |
| 58 | 10 A | Trailer tow backup lamps. |
| 64 | 25 A | Four-wheel drive. |
| 65 | 15 A | Transmission control module (diesel). |
| 67 | 20 A | Transmission run/start. |
| 69 | 30 A | Left-hand windshield wiper. |
| 80 | 15 A | Not used (spare). |
| 82 | 25 A | Four-wheel drive. |
| 83 | 50 A | Supplemental heater (diesel). |
| 84 | 50 A | Supplemental heater (diesel). |
| 85 | 50 A | Supplemental heater (diesel). |
| 86 | 25 A | Selective catalytic reduction system. |
| 91 | 20 A | Trailer tow light module. |
| 95 | 15 A | Powertrain control module power (hybrid). |
| 98 | 10 A | Powertrain control module power (hybrid). Coolant pumps (hybrid). |
| 100 | 15 A | Left-hand headlamps. |
| 101 | 15 A | Right-hand headlamps. |
| 105 | 50 A | Active front steering. |
| 107 | 30 A | Trailer tow battery charge. |
| 121 | 30 A | Fuel filter heater (diesel). |
| 124 | 5 A | Rain sensor module. |
| 125 | 10 A | USB smart charger. |
| 134 | 25 A | Multi-contour seat relay. |
| 138 | 10 A | Tailgate release. |
| 139 | 5 A | USB smart charger. |
| 146 | 15 A | Traction battery control module. |
| 159 | 5 A | DC/DC power (hybrid). |
| 160 | 10 A | Smart data link control. |
| 162 | 7.5 A | Not used (spare). |
| 168 | 20 A | Traction battery control module (hybrid). |
| 169 | 10 A | Motor electric cool pump (hybrid). |
| 170 | 10 A | Pedestrian alert control module (hybrid). Traction battery control module (hybrid). Electric motor cool pump (hybrid). |
| 202 | 60 A | Body control module B+. |
| 210 | 30 A | Body control module start stop. |
| Relay Number | Protected Component |
| R04 | Electronic fan relay 1. |
| R06 | Electronic fan relay 3. |
| R35 | Supplemental heater. |
| R36 | Supplemental heater. |
Body Control Module Fuse Box
| Fuse Location | Fuse Rating | Protected Component |
| 1 | — | Not used. |
| 2 | 10 A | Delayed accessory feed. |
| 3 | 7.5 A | Wireless charger. |
| 4 | 20 A | Not used. |
| 5 | — | Not used. |
| 6 | 10 A | Driver power window switch. |
| 7 | 10 A | Gear shift module. |
| 8 | 5 A | Cell phone passport module. |
| 9 | 5 A | Combined sensor module. |
| 10 | — | Not used. |
| 11 | — | Not used. |
| 12 | 7.5 A | Enhanced central gateway. Climate control. |
| 13 | 7.5 A | Instrument cluster. Steering column control module. |
| 14 | 15 A | Not used (spare). |
| 15 | 15 A | Integrated control panel. SYNC. |
| 16 | — | Not used. |
| 17 | 7.5 A | Headlamp control module. |
| 18 | 7.5 A | Not used. |
| 19 | 5 A | Headlamp switch. |
| 20 | 5 A | Passive start. Ignition switch. Key inhibit solenoid. |
| 21 | 5 A | Trailer brake switch. |
| 22 | 5 A | Not used. |
| 23 | 30 A | Driver door control module. |
| 24 | 30 A | Moonroof. |
| 25 | 20 A | Not used. |
| 26 | 30 A | Passenger door control module. |
| 27 | 30 A | Not used. |
| 28 | 30 A | Amplifier. |
| 29 | 15 A | 12-inch display. Adjustable pedals. |
| 30 | 5 A | Not used. |
| 31 | 10 A | RF receiver. Driver monitor. Terrain management switch. |
| 32 | 20 A | Audio control module. |
| 33 | — | Not used. |
| 34 | 30 A | Run/start relay. |
| 35 | 5 A | 400-watt inverter run/start. |
| 36 | 15 A | Auto-dimming interior mirror. Rear heat seat run/start. Adaptive front steering run/start. Heated wheel (vehicles without adaptive front steering). |
| 37 | 20 A | Advanced driver-assistance systems. |
| 38 | 30 A circuit breaker. | Rear power windows. |
2023 Ford F-150 Fuse Box Diagram
The 2023 Ford F150 also holds two fuse box layouts including Under Hood Fuse Box and Body Control Module Fuse Box.
Under Hood Fuse Box
| Fuse or relay number | Fuse amp Rating | Protected Component |
|---|---|---|
| 1 | 40 A | Body control module – battery power in feed 1. |
| 3 | 40 A | Body control module – battery power in feed 2. |
| 4 | 30 A | Fuel pump. |
| 5 | 5 A | Powertrain control module coil. |
| 6 | 25 A | Powertrain control module power (gas, hybrid). |
| 7 | 20 A | Powertrain control module power. |
| 8 | 20 A | Powertrain control module power (hybrid). |
| 10 A | Powertrain control module power (gas, Raptor, Tremor). | |
| 9 | 20 A | Powertrain control module power (gas, hybrid). |
| 10 | – | Not used. |
| 11 | 30 A | Starter motor. |
| 13 | 40 A | Blower motor. |
| 15 | 25 A | Horn. |
| 19 | 20 A | Snowplow switch (gas)/Rear heated seats (gas, hybrid). |
| 21 | 10 A | Headlamp run/start feed. |
| 22 | 10 A | Electronic power assist steering. |
| 23 | 10 A | Electric brake boost. |
| 24 | 10 A | Powertrain control module (gas, hybrid). |
| 25 | 10 A | Electronic power assists steering. |
| 28 | 50 A | Electric brake boost. |
| 29 | 50 A | Electric brake boost. |
| 30 | 40 A | Driver power seat. |
| 31 | 30 A | Passenger power seat. |
| 32 | 20 A | Auxiliary power point. |
| 33 | 20 A | Auxiliary power point/USB smart charger. |
| 34 | 20 A | Auxiliary power point. |
| 37 | 30 A | Tailgate module. |
| 38 | 40 A | Center high-mounted stop lamp camera/Trailer camera/2 kW inverter/24 V alternator – run/start feed/Analog rear video camera. |
| 41 | 25 A | Power sliding back window. |
| 42 | 30 A | Trailer brake control module. |
| 47 | 50 A | Cooling fan (gas, hybrid, Raptor, Tremor, Raptor R). |
| 48 | 20 A | Rear heated seats (Raptor, Tremor, Raptor R) |
| 49 | 50 A | Cooling fan (gas, hybrid, Raptor, Tremor, Raptor R). |
| 50 | 40 A | Heated backlight (gas, hybrid). |
| 55 | 30 A | Trailer tow park lamps. |
| 56 | 20 A | Change the air cooler fan relay (Raptor, Tremor). |
| 58 | 10 A | Trailer tow backup lamps. |
| 60 | 15 A | Upfitter 1 relay (Raptor, Tremor, Raptor R). |
| 61 | 15 A | Upfitter 2 relay (Raptor, Tremor, Raptor R). |
| 62 | 10 A | Upfitter 3 relay (Raptor, Tremor, Raptor R). |
| 63 | 10 A | Upfitter 4 relay (Raptor, Tremor, Raptor R). |
| 64 | 25 A | Four-wheel drive. |
| 65 | – | Not used. |
| 67 | 20 A | Transmission run/start. |
| 69 | 30 A | Left-hand windshield wiper. |
| 72 | 30 A | Fuel pump 2 (Raptor R). |
| 82 | 25 A | Four-wheel drive. |
| 83 | – | Not used. |
| 84 | – | Not used. |
| 85 | – | Not used. |
| 86 | – | Not used. |
| 91 | 20 A | Trailer tow light module. |
| 95 | 15 A | Powertrain control module power (hybrid). |
| 98 | 10 A | Powertrain control module power (hybrid)/Coolant pumps (hybrid). |
| 100 | 15 A | Left-hand headlamps. |
| 101 | 15 A | Right-hand headlamps. |
| 105 | 50 A | Active front steering. |
| 107 | 30 A | Trailer tow battery charge. |
| 108 | 15 A | Spot lamps (police). |
| 121 | – | Not used. |
| 124 | 5 A | Rain sensor module. |
| 125 | 10 A | USB smart charger. |
| 134 | 25 A | Center high-mounted stop lamp camera/Trailer camera/2 kW inverter/24 V alternator – run/start feed/Analog rear video camera. |
| 138 | 10 A | Tailgate release. |
| 139 | 5 A | USB smart charger. |
| 146 | 15 A | Traction battery control module (hybrid)/Charge air pump (Raptor R). |
| 147 | 40 A | Change air cooler fan relay (Raptor, Tremor). |
| 159 | 5 A | DC/DC power (hybrid). |
| 160 | 10 A | Smart data link control. |
| 168 | 15 A | Traction battery control module (hybrid). |
| 169 | 10 A | Motor electric coolant pump (hybrid). |
| 170 | 10 A | Pedestrian alert control module (hybrid)/Traction battery control module (hybrid)/Motor electric coolant pump (hybrid). |
| 202 | 60 A | Body control module B+. |
| 210 | 30 A | Body control module start/stop. |
| 305 | 5 A | Upfitter 5 relay (Raptor, Tremor, Raptor R). |
| 306 | 5 A | Upfitter 6 relay (Raptor, Tremor, Raptor R). |
Body Control Module Fuse Box
| Fuse Location | Fuse Rating | Protected Component |
|---|---|---|
| 1 | – | Not used. |
| 2 | 10 A | Delayed accessory feed. |
| 3 | 7.5 A | Wireless charger. |
| 4 | 20 A | Not used. |
| 5 | – | Not used. |
| 6 | 10 A | Driver power window switch. |
| 7 | 10 A | Gear shift module. |
| 8 | 5 A | Cell phone passport module. |
| 9 | 5 A | Combined sensor module. |
| 10 | – | Not used. |
| 11 | – | Not used. |
| 12 | 7.5 A | Enhanced central gateway. Climate control. |
| 13 | 7.5 A | Instrument cluster. Steering column control module. |
| 14 | 15 A | Not used (spare). |
| 15 | 15 A | Integrated control panel. SYNC. |
| 16 | – | Not used. |
| 17 | 7.5 A | Headlamp control module. |
| 18 | 7.5 A | Not used. |
| 19 | 5 A | Headlamp switch. |
| 20 | 5 A | Passive start. Ignition switch. Key inhibit solenoid. |
| 21 | 5 A | Trailer brake switch. |
| 22 | 5 A | Trailer battery charge run/start. |
| 23 | 30 A | Driver door control module. |
| 24 | 30 A | Moonroof. |
| 25 | 20 A | Not used. |
| 26 | 30 A | Passenger door control module. |
| 27 | 30 A | Not used. |
| 28 | 30 A | Amplifier. |
| 29 | 15 A | 12-inch display/Adjustable pedals. |
| 30 | 5 A | Not used. |
| 31 | 10 A | RF receiver/Driver monitor/Terrain management switch. |
| 32 | 20 A | Audio control module. |
| 33 | 400-watt inverter run/start. | Not used. |
| 34 | 30 A | Run/start relay. |
| 35 | 5 A | 400 watt inverter run/start. |
| 36 | 15 A | Auto-dimming interior mirror. Rear heat seat run/start. Adaptive front steering run/start. Heated wheel (vehicles without adaptive front steering). |
| 37 | 20 A | Advanced driver-assistance systems. |
| 38 | 30 A circuit breaker. | Rear power windows. |
| Relay Number | Protected Component |
| R04 | Electronic fan relay 1. |
| R06 | Electronic fan relay 3. |
| R35 | Supplemental heater. |
| R36 | Supplemental heater. |
Tip: Some high-amperage fuses may look slightly different depending on the model year and trim. Always verify the fuse type before replacing.
Fuse Replacement Tips / Safety Precautions
- Always disconnect the negative battery terminal before removing fuses.
- Never replace a blown fuse with a higher amp rating — this can damage wiring or cause a fire.
- Use a fuse puller or needle-nose pliers for safety.
- Label replaced fuses for future reference.
Frequently Asked Questions (FAQs)
Why does the air conditioning fuse blow in an F-150?
The fuse can blow due to several reasons:
Short circuit: Damaged or frayed wires in the AC system (compressor, condenser fan, cabin fan) touching metal can cause a surge.
Defective compressor: A failing or seized compressor can draw too much current and overload the fuse.
Fan problems: A stuck or worn condenser or cabin fan can pull extra current, blowing the fuse.
Faulty AC relay: A bad relay can disrupt electrical flow and cause the fuse to blow.
Wrong fuse: Using a lower-amperage fuse than recommended increases the chance of it blowing.
Why does the radio fuse blow in an F-150?
Common reasons include:
Short circuit: Damaged or frayed wiring, or a fault inside the radio, can cause a surge that blows the fuse.
Extra devices: Adding amplifiers or other accessories to the same circuit can overload the fuse.
Wrong fuse: Using a lower-amperage fuse than recommended increases the chance of it blowing.
Defective radio: A faulty radio may draw too much current.
Electrical system issues: Problems like a faulty alternator or voltage fluctuations can cause the fuse to blow.
Why does the cooling fan fuse blow in an F-150?
The fuse can blow for several reasons:
Short circuit: Damaged or exposed wiring touching metal can cause a surge in current.
Faulty cooling fan motor: A defective fan motor may draw too much power and overload the fuse.
Cooling system problems: Engine overheating can make the fan run more often, putting extra strain on the fuse.
Wrong fuse: Using a fuse with lower amperage than recommended can make it blow even under normal conditions.
