Ford F-550 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 | Driver door pack switch, Power sliding rear window switch |
3 | 7.5A | Seat memory switch, Power lumbar motor, Wireless charging module |
4 | 20A | Not used (spare) |
5 | - | Not used |
6 | 10A | Power telescoping mirrors switch, Front power windows switch |
7 | 10A | Brake on-off switch |
8 | 5A | Embedded modem |
9 | 5A | Combined sensor module |
10 | - | Not used |
11 | - | Not used |
12 | 7.5A | On-board diagnostic module, Smart data link connector, Climate control module |
13 | 7.5A | Steering column control module, Instrument cluster |
14 | - | Not used |
15 | 15A | SYNC, Display |
16 | - | Not used |
17 | 7.5A | Active front steering module, Park aid module |
18 | 7.5A | Selectable drive modes switch, Select shift switch |
19 | 5A | Head up display |
20 | 5A | Ignition switch, Key inhibit solenoid |
21 | 5A | Head up display, In-vehicle temperature and humidity sensor |
22 | 5A | Upfitter switches |
23 | 30A | Driver front door module |
24 | 30A | Moonroof |
25 | 20A | Not used (spare) |
26 | 30A | Passenger front door module |
27 | 30A | Not used (spare) |
28 | 30A | Amplifier |
29 | 15A | Adjustable pedals switch |
30 | 5A | Brake on-off output to trailer brake controller and customer access circuits |
31 | 10A | Remote keyless entry |
32 | 20A | Radio |
33 | - | Not used |
34 | 30A | Run-start relay |
35 | 5A | Not used (spare) |
36 | 15A | Camera module, Lane keeping system, Auto-dimming interior mirror, Rear heated seats |
37 | 20A | Heated steering wheel |
38 | 30A | Power windows |
Engine compartment fuse box:
Fuse/Relay N° | Rating | Functions |
1 | 20A | Power point 4 |
2 | 20A | Power point 3 |
3 | 10A | Spot light module |
4 | 10A | Four-wheel drive vacuum solenoid |
5 | 40A | Active front steering |
6 | 10A | Snow plow |
7 | 30A | Trailer tow battery charge |
8 | 10A | Anti-lock brake system module |
9 | 10A | Electronic power assisted steering module |
10 | 30A | Trailer tow park lamps |
11 | 20A | Horn |
12 | 30A | Torque overlay |
13 | 30A | Power sliding rear window |
14 | 40A | Body control module - battery power in feed 1 |
15 | 30A | Passenger seat power |
16 | 10A | Powertrain control module, Transmission control module |
17 | 10A | Blind spot information system |
18 | 10A | Four-wheel drive module |
19 | 5A | Adaptive cruise control |
20 | 15A | Heated mirrors |
21 | 40A | Heated rear window |
22 | 10A | On-board diagnostic module, Smart data link connector |
23 | 15A | Transmission control module |
24 | 30A | Driver power seat |
25 | 25A | Voltage quality module |
26 | 30A | Trailer tow battery charge |
27 | 20A | Rear heated seats |
28 |
25A - |
Glow plug (diesel) Not used (gas) |
29 | 40A | Electric power assisted steering motor |
30 | 10A | Not used (spare) |
31 | 20A | Power point 5 |
32 | 25A | Four-wheel drive module |
33 | 10A | Alternator sense line 2 |
34 | 50A | Electric cooling fan (gas), Supplemental air heater (diesel) |
35 | 20A | Power point 2 |
36 | 20A | Power point 1 |
37 | 60A | Anti-lock brake system pump |
38 | 60A | Inverter |
39 | 25A | Four-wheel drive module |
40 | 30A | Starter motor solenoid |
41 | 10A | Tailgate release solenoid |
42 | 40A | Blower motor |
43 | 10A | Trailer tow backup lamps |
44 | 40A | Trailer tow lighting module |
45 | 30A | Anti-lock brake system valve |
46 | 30A | Compressed natural gas module power |
47 |
50A - |
Supplemental air heater (diesel) Not used (gas) |
48 |
50A - |
Supplemental air heater (diesel) Not used (gas) |
49 | - | Not used |
50 | 30A | Heated and cooled seats |
51 | 20A | Powertrain control module |
52 | 15A | Compressed natural gas (gas), Fuel rail pressure relief control (diesel) |
53 | 20A | 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 |
54 | 20A | A/C clutch relay power, Fan clutch |
55 | 5A | Rain sensor |
56 | 30A | Windshield wipers |
57 | 10A | Upfitter interface module |
58 | 10A | Alternator sense line |
59 | 30A | Power running boards |
60 | 40A | Body control module - battery power in feed 2 |
61 | 10A | Telescopic mirror motors |
62 | 40A | Trailer brake control, Aftermarket e-brake access |
63 | 15A | Multi-contour seats |
64 | 20A | Ignition coil (gas), Glow plug module (diesel), Nitrogen oxide module (diesel), Urea level and quality sensor (diesel) |
65 | 30A | Fuel pump |
66 | 10A | A/C clutch solenoid |
67 | 40A | Auxiliary lighting module |
68 | 10A | Powertrain control module |
69 | 60A | Body control module power |
70 | 30A | Trailer tow stop and turn lamps |