Engine Compartment Fuse Box
WARNING: Always disconnect the battery before servicing high current fuses. WARNING: To reduce risk of electrical shock, always replace the cover to the power distribution box before reconnecting the battery or refilling fluid reservoirs. |
The engine compartment fuse box is in the engine compartment. It has high-current fuses that protect your vehicle’s main electrical systems from overloads.If you disconnect and reconnect the battery, you need to reset some features.
Note: If your vehicle has dual batteries, disconnecting the primary under hood battery does not remove power from all circuits.
Fuse Number | Fuse Rating | Protected Component |
---|---|---|
1 | 20 A | Horn. |
2 | 50 A | Blower motor. |
3 | — | Not used. |
4 | 30 A | Starter relay. |
5 | 20 A | Not used (spare). |
6 | 20 A | Upfitter relay 4 (cutaway). Not used (spare) (stripped chassis). |
8 | — | Not used. |
10 | — | Not used. |
12 | 20 A | Power point 4. |
13 | 10 A | Yaw sensor (stripped chassis). Not used (spare) (cutaway). |
14 | 10 A | Forward looking radar (cutaway). Not used (spare) (stripped chassis). |
15 | — | Not used. |
16 | — | Not used. |
17 | 10 A | Powertrain control module run/start feed. |
18 | 10 A | Anti-lock brake system run/start feed. |
19 | — | Not used. |
20 | 30 A | Wiper power. |
21 | — | Not used. |
22 | 10 A | Wiper module (stripped chassis). Not used (spare) (cutaway). |
23 | — | Not used. |
24 | 40 A | Body control module – run power in feed 2. |
25 | 50 A | Body control module – run power in feed 1. |
26 | — | Not used. |
27 | 20 A | Body builder frame connector. |
28 | — | Not used. |
29 | 10 A | B+ power 12 V (special order vehicle). |
30 | 30 A | Power driver seat (cutaway). Not used (spare) (stripped chassis). |
31 | — | Not used. |
32 | 20 A | Vehicle power 1. |
33 | 20 A | Vehicle power 2. |
34 | 10 A | Vehicle power 3. |
35 | 20 A | Vehicle power 4. |
36 | — | Not used. |
37 | — | Not used. |
38 | 10 A | Washer relay (stripped chassis). Not used (spare) (cutaway). |
39 | — | Not used. |
41 | 30 A | Trailer brake control connector. |
43 | 30 A | Instrument panel connector (stripped chassis). Not used (spare) (cutaway). |
45 | — | Not used. |
46 | 10 A | A/C clutch. |
47 | 40 A | Upfitter relay 1 (cutaway). Not used (spare) (stripped chassis). |
48 | — | Not used. |
49 | 30 A | Pump electronics module. |
50 | 15 A | Injectors. |
51 | 20 A | Power point 1. |
52 | 50 A | B-pillar vehicle connector (cutaway). Not used (spare) (stripped chassis). |
53 | 30 A | Trailer tow park lamps. |
54 | 40 A | Upfitter 2 relay (cutaway). Not used (spare) (stripped chassis). |
55 | 20 A | Upfitter 3 relay (cutaway). Not used (spare) (stripped chassis). |
56 | 20 A | Power point 2 prep B-pillar connector. |
58 | 5 A | USB smart charger. |
59 | 10 A | Park lamps 1 (special order vehicle). |
60 | — | Not used. |
61 | — | Not used. |
62 | — | Not used. |
63 | — | Not used. |
64 | — | Not used. |
65 | — | Not used. |
66 | — | Not used. |
67 | — | Not used. |
69 | — | Not used. |
70 | 40 A | Inverter. |
71 | 30 A | Anti-lock brake system valves. |
72 | 10 A | Brake on and off switch. |
73 | — | Not used. |
74 | — | Not used. |
75 | — | Not used. |
76 | 60 A | Anti-lock brake system pump. |
77 | 30 A | Voltage quality module power – body control module. |
78 | 10 A | Trailer tow stop lamps. |
79 | — | Not used. |
80 | 10 A | Trailer tow backup lamps. |
81 | — | Not used. |
82 | 5 A | Run/start fuse – upfitter relays (cutaway). B+ fuse – upfitter relay. |
83 | — | Not used. |
84 | — | Not used. |
85 | — | Not used. |
86 | — | Not used. |
87 | — | Not used. |
88 | — | Not used. |
89 | — | Not used. |
91 | 40 A | B-pillar (cutaway). Instrument panel (stripped chassis). |
93 | 10 A | Park lamps 3 (special order vehicle). |
94 | 10 A | Park lamps 2 (special order vehicle). |
95 | 20 A | Stop lamp relay. |
96 | — | Not used. |
97 | 50 A | Engine. B-pillar vehicle connector. Instrument panel. |
98 | 30 A | Trailer tow battery charge. |
99 | 40 A | Instrument panel connector. |
100 | — | Not used. |
101 | — | Not used. |
102 | — | Not used. |
103 | — | Not used. |
104 | — | Not used. |
105 | 15 A | Trailer tow right-hand and left-hand stop and direction indicator relay power. |
Note: Spare fuse amperage may vary.
Relay Number | Fuse Rating | Protected Component |
---|---|---|
R02 | — | Powertrain control module. Power relay. |
R05 | — | Not used. |
Passenger Compartment Fuse Box
WARNING: Always disconnect the battery before servicing high current fuses. |
The fuse panel is to the left-hand side of the brake pedal and mounted onto the lower left-hand cowl panel.To remove a fuse, use the fuse puller tool provided on the inside of the fuse panel cover.Replace fuses with the same type and rating. See Changing a Fuse .
Note: If your vehicle has dual batteries, disconnecting the primary under hood battery does not remove power from all circuits.
Fuse Number | Fuse Rating | Protected Component |
---|---|---|
1 | — | Not used. |
2 | 10 A | Left-hand front and right-hand front door lock switch (cutaway). Inverter (cutaway). Connector (stripped chassis). |
3 | 7.5 A | Power mirror switch (cutaway). |
— | Not used (stripped chassis). | |
4 | 20 A | Trailer brake control. |
5 | 20 A | Not used (spare). |
6 | 10 A | Not used (spare). |
7 | 10 A | Not used (spare). |
8 | 10 A | Not used (spare). |
9 | 10 A | Not used (spare). |
10 | — | Not used. |
11 | — | Not used. |
12 | 7.5 A | Smart datalink connector. Enterprise wired-in-device. |
13 | 7.5 A | Cluster. Steering column control module. |
14 | 15 A | Not used (spare). |
15 | 15 A | Not used (spare). |
16 | — | Not used. |
17 | 7.5 A | Not used. |
18 | 7.5 A | Climate mode switch. |
19 | 5 A | Radio transceiver module. |
20 | 5 A | Ignition switch. |
21 | 5 A | Not used. |
22 | 5 A | Body builder B-pillar connector (cutaway). |
5 A | Not used (stripped chassis). | |
23 | 30 A | Not used (spare). |
24 | 30 A | Not used (spare). |
25 | 20 A | Not used (spare). |
26 | 30 A | Not used (spare). |
27 | 30 A | Not used (spare). |
28 | 30 A | Not used (spare). |
29 | 15 A | Upfitter interface module (cutaway). |
— | Not used (stripped chassis). | |
30 | 5 A | Not used (spare). |
31 | 10 A | Smart datalink connector. |
32 | 20 A | Radio. |
33 | — | Not used. |
34 | 30 A | Not used (spare). |
35 | 5 A | Tow haul switch. |
36 | 15 A | Rear view mirror (cutaway). Rear view camera (cutaway). |
— | Not used (stripped chassis). | |
37 | 20 A | Not used (spare). |
38 | 30 A | Rear window switches and motors (cutaway). |
— | Not used (stripped chassis). |
Note: Spare fuse amperage may vary.
2021 Ford E-450 Owners Manual
Changing a Fuse
Fuses
WARNING: Always replace a fuse with one that has the specified amperage rating. Using a fuse with a higher amperage rating can cause severe wire damage and could start a fire. |
If electrical components in the vehicle are not working, a fuse may have blown. Blown fuses are identified by a broken wire within the fuse. Check the appropriate fuses before replacing any electrical components.Fuse Types
AMicro 2. BMicro 3. CMaxi. DMini. EM Case. FJ Case. GJ Case Low Profile. HSlotted M Case. |