2021 Ford F-150 Fuse Box Diagram

Below are all the fuse diagrams for the 2021 Ford F-150. Both passenger and engine fuse boxes are covered, showing all relays and fuses.

Under Hood Fuse Box Location

Under Hood Fuse Box Diagram

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 seats 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 Location

Body Control Module Fuse Diagram

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.

2021 Ford F-150 Owners Manual