The facelifted fourth-generation Ford F-Series Super Duty, built for heavy-duty towing, hauling, and commercial applications, was available from 2020 to 2022. With upgraded technology, improved powertrains, and enhanced capability, the F-250, F-350, F-450, and F-550 models remain trusted choices for businesses, fleet operators, and off-road enthusiasts.
In this article, you will find fuse box diagrams for Ford F-250, F-350, F-450, and F-550 models produced between 2020 and 2022, covering years 2020, 2021, and 2022. These diagrams provide crucial details about the fuse layout, helping truck owners, fleet managers, and mechanics locate and understand the function of each fuse and relay.
What’s Included:
Fuse Box Diagrams – Clear, detailed visuals to help identify fuses, relays, and circuit breakers.
Fuse Panel Locations – Step-by-step guidance on where to find the fuse panels inside the Ford Super Duty trucks.
Fuse Assignments – Comprehensive descriptions of each fuse and relay function for accurate diagnostics and troubleshooting.
Whether you’re searching for the fuse panel layout, replacing a blown fuse, or diagnosing an electrical issue, this guide is an invaluable resource. It ensures that your Ford F-Series Super Duty electrical system remains functional and reliable for work, towing, and off-road performance.
Keep your Ford F-250, F-350, F-450, and F-550 (2020–2022) operating at peak performance with this detailed fuse box, fuse panel, and relay guide!
The fuse panel is in the right-hand side of the passenger footwell behind a trim panel. To remove the trim panel, pull it toward you and swing it away from the side. To reinstall it, line up the tabs with the grooves on the panel, and then push it shut.
Engine Compartment Fuse Box
Fuse Box Diagrams
Passenger Compartment Fuse Box
Assignment of the fuses in the passenger compartment (2020-2022)
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Powertrain control module. Transmission control module.
17
10 A
Blind spot information system.
18
10 A
Four-wheel drive module.
19
5 A
Adaptive cruise control.
20
15 A
Heated mirrors.
21
40 A
Heated rear window.
22
10 A
On-board diagnostic module. Smart data link connector.
23
15 A
Transmission control module.
24
30 A
Driver power seat.
25
25 A
Voltage quality module.
26
30 A
Trailer tow battery charge.
27
20 A
Rear heated seats.
28
25 A
Glow plug (diesel).
28
—
Not used (gas).
29
40 A
Electric power assisted steering motor.
30
10 A
2020: Heated wiper park.
31
20 A
Power point 5.
32
25 A
Four-wheel drive module.
33
10 A
Alternator sense line 2.
34
50 A
Electric cooling fan (gas). Supplemental air heater (diesel).
35
20 A
Power point 2.
36
20 A
Power point 1.
37
60 A
Anti-lock brake system pump.
38
60 A
Inverter.
39
25 A
Four-wheel drive module.
40
30 A
Starter motor solenoid.
41
10 A
Tailgate release solenoid.
42
40 A
Blower motor.
43
10 A
Trailer tow backup lamps.
44
40 A
Trailer tow lighting module.
45
30 A
Anti-lock brake system valve.
46
30 A
Compressed natural gas module power.
47
50 A
Supplemental air heater (diesel).
47
—
Not used (gas).
48
50 A
Supplemental air heater (diesel).
48
—
Not used (gas).
49
—
Not used.
50
30 A
Heated and cooled seats.
51
20 A
Powertrain control module.
52
15 A
Compressed natural gas (gas). Fuel rail pressure relief control (diesel).
53
20 A
Exhaust gas recirculation stepper motor (gas). Universal exhaust gas oxygen sensors (gas). Exhaust gas recirculation cooler bypass (diesel). Urea pump motor controller (diesel). Oxygen sensors.
