2018 Ford F150 Fuse Box Diagram

In this article, we’ll explore the 2018 Ford F150 fuse box diagram to help you understand it better. We’ll carefully explain what each fuse does, so you can have a complete understanding of how these small power protectors help your vehicle’s electrical parts work smoothly.

Note: If a fuse blows or a circuit breaker opens, all parts connected to that circuit will stop working. Taking the time to inspect and replace faulty fuses can save you from unnecessary repairs and potential hazards, ensuring the smooth operation of your vehicle's electrical components.

2018 Ford F150 Power Distribution Fuse Box Diagram (Underhood)

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.
1Micro fuse/ 2Slotted M case fuse. 
Spare fuse amperage may vary.

Fuse Number	Fuse Rating	Protected Components
1	25A1	Horn.
2	50A2	Electric fan 1.
3	30A2	Windshield wiper motor.
4	60A2	Body control module.
5	30A2	Starter relay.
6	20A2	Powerpoint 1.
8	20A2	Powerpoint 2.
10	5A1	Rain sensor.
12	15A2	Upfitter 1 relay (Raptor).
13	10A1	4×4 run/start.   Adaptive cruise control run/start module.
14	15A1	Not used (spare).
15	7.5A1	Front view camera.   Voltage quality module.
	15A 1	Not used (spare)(Raptor).
16	10A1	Powertrain control module.   Transmission control module run/start.
17	10A1	Anti-lock brakes run/start.
18	10A1	Electric power steering run/start.
19	5A1	Upfitter 5 relay (Raptor).
20	40A2	Blower motor.
21	30A2	Passenger seat motors.
22	20A1	Radio amplifier.
23	10A1	Alt-A sensor.
24	30A2	Trailer brake control module.
25	50A2	Body control module 1.
26	50A2	Electric fan (Gas).
27	30A2	Driver seat motors/memory module.
28	15A1	Heated seat.
29	10A1	4×4 solenoid.
30	25A2	Trailer tow battery charge.
31	—	Not used.
32	10A1	A/C clutch.
33	—	Not used.
34	10A1	Vehicle power 5 (Diesel).
35	20A1	Vehicle power 4 (Gas).
	15A1	Vehicle power 4 (Diesel).
36	10A1	Vehicle power 3.
37	25A1	Vehicle power 2 (Gas).
	15A1	Vehicle power 2 (Diesel).
38	25A1	Vehicle power 1 (Gas).
	20A1	Vehicle power 1 (Diesel).
39	—	Not used.
41	30A2	Body-control-module voltage-quality-module feed.
43	20A2	Trailer tow lamps module.
45	—	Not used.
46	10A1	Steering-column lock.
47	50A2	Powertrain control heater 3 (Diesel).
48	30A2	Fuel filter heater (Diesel).
49	—	Not used.
50	30A2	Fuel pump.
51	20A2	Powerpoint 3.
52	50A2	Powertrain control heater 2 (Diesel).
53	25A2	Trailer tow park lamps.
54	—	Not used.
55	15A2	Upfitter 2 relay (Raptor).
56	—	Not used.
58	5A1	USB smart charger.
59	—	Not used.
60	—	Not used.
61	15A1	Not used (spare).
62	5A1	Upfitter 6 relay (Raptor).
63	25A1	4×4.
64	15A1	E-locker.
65	—	Not used.
66	—	Not used.
67	—	Not used.
69	—	Not used.
70	40A2	Anti-lock brake system (ABS) valves.   Electric parking brake.
71	25A2	4×4.
72	—	Not used.
73	—	Not used.
74	10A1	Trailer tow backup lamps.
75	—	Not used.
76	40A2	Body control module 2.
77	30A2	Climate-controlled seat.
78	10A1	Spotlight module.
79	—	Not used.
80	10A1	Heated windshield wiper.
		Upfitter 4 relay (Raptor).
81	—	Not used.
82	30A1	Transmission fluid pump.
	5A1	Powertrain control module (Diesel).
83	15A1	Transmission control module.
84	—	Not used.
85	—	Not used.
86	—	Not used.
87	—	Not used.
88	10A1	Multi-Contour Seats Relay.
		Upfitter 3 relay (Raptor).
89	30A2	Power running boards.
91	—	Not used.
93	15A1	Heated mirrors.
94	15A1	Rear heated seat module (Raptor, Diesel).
95	15A1	Not used (spare).
96	—	Not used.
97	40A2	Electric fan (Raptor).
	50A2	Powertrain control heater 1 (Diesel).
98	15A2	10R transmission module r/s.   3.3L transmission fluid pump.
99	40A2	Heated rear window.
100	25A2	Diesel exhaust fluid (DEF) heater relay (Diesel).
101	25A2	Electric fan (Base only).
102	30A2	Power sliding back window.
103	20A2	Trailer tow stop-turn relay fuse.
104	15A1	Snowplow switch.   Rear heated seats (Base).
105	10A1	Telescoping mirror.

Relay Number	Fuse Rating	Protected Components
R02	—	Powertrain control module relay.
R05	—	Electric fan relay.

2018 Ford F150 Passenger Compartment Fuse Box Diagram

Fuse Number	Fuse Rating	Protected Components
1	—	Not used.
2	7.5A	Memory module logic.   Memory seat switches.   Lumbar motor.
3	20A	Driver door lock motor.
4	5A	Trailer brake control.
5	20A	Not used (spare).
6	10A	Not used (spare).
7	10A	Not used (spare).
8	10A	Not used (spare).
9	10A	Extended power module (Base only).
10	5A	Embedded modem module.
11	5A	Combined sensor module.
12	7.5A	Climate head module.   Smart datalink connector.
13	7.5A	Cluster.   Steering column control module.
14	10A	Brake on/off switch.
15	10A	Smart datalink connector.
16	15A	Tailgate release.
17	5A	Heads up display.   Terrain switch.
18	5A	Ignition switch and passive-entry passive-start start stop switch.   Key inhibit solenoid.
19	7.5A	Extended power module (except Raptor).
	7.5A	Restraint control module (Raptor only).
20	—	Not used.
21	5A	Heads up display.   In-car temperature with humidity sensor.
22	5A	Passenger occupant detection. (Raptor only)
23	10A	Power-driven rear glass switch.   Inverter.   Driver-side window.   Moonroof.   Vista roof.
24	20A	Central lock/unlock.
25	30A	Driver door control module.
26	30A	Passenger door control module.
27	30A	Vista roof.   Moonroof.
28	20A	Not used (spare).
29	30A	Not used (spare).
30	30A	Not used (spare).
31	15A	Adjustable pedal switch and motor.
32	10A	Multi-function display.   SYNC.   Radio frequency receiver.
33	20A	Radio.
34	30A	Run-start relay.
35	5A	Selectable drive mode switch.   Upfitter switches (Raptor only).
36	15A	360 camera module.   Heated steering wheel module.   Rear-view mirror.   Rear heated seats.   Lane departure warning module.   Automatic high beam module.   Image processing module A.
37	20A	Not used (spare).
38	30A Circuit breaker	Rear window switches and motors.