2021 Ford E-450 Fuse Box Diagram

Engine Compartment Fuse Box

WARNING   WARNING:  Always disconnect the battery before servicing high current fuses.
WARNING   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.

2021 Ford E-450 Engine Fuse Box Diagram
Fuse Number  Fuse Rating  Protected Component  
1  20 AHorn.  
2  50 ABlower motor.  
3  —  Not used.  
4  30 AStarter relay.  
5  20 ANot used (spare).  
6  20 AUpfitter relay 4 (cutaway).   Not used (spare) (stripped chassis).  
8  —  Not used.  
10  —  Not used.  
12  20 APower point 4.  
13  10 AYaw sensor (stripped chassis).   Not used (spare) (cutaway).  
14  10 AForward looking radar (cutaway).   Not used (spare) (stripped chassis).  
15  —  Not used.  
16  —  Not used.  
17  10 APowertrain control module run/start feed.  
18  10 AAnti-lock brake system run/start feed.  
19  —  Not used.  
20  30 AWiper power.  
21  —  Not used.  
22  10 AWiper module (stripped chassis).   Not used (spare) (cutaway).  
23  —  Not used.  
24  40 ABody control module – run power in feed 2.  
25  50 ABody control module – run power in feed 1.  
26  —  Not used.  
27  20 ABody builder frame connector.  
28  —  Not used.  
29  10 AB+ power 12 V (special order vehicle).  
30  30 APower driver seat (cutaway).   Not used (spare) (stripped chassis).  
31  —  Not used.  
32  20 AVehicle power 1.  
33  20 AVehicle power 2.  
34  10 AVehicle power 3.  
35  20 AVehicle power 4.  
36  —  Not used.  
37  —  Not used.  
38  10 AWasher relay (stripped chassis).   Not used (spare) (cutaway).  
39  —  Not used.  
41  30 ATrailer brake control connector.  
43  30 AInstrument panel connector (stripped chassis).   Not used (spare) (cutaway).  
45  —  Not used.  
46  10 AA/C clutch.  
47  40 AUpfitter relay 1 (cutaway).   Not used (spare) (stripped chassis).  
48  —  Not used.  
49  30 APump electronics module.  
50  15 AInjectors.  
51  20 APower point 1.  
52  50 AB-pillar vehicle connector (cutaway).   Not used (spare) (stripped chassis).  
53  30 ATrailer tow park lamps.  
54  40 AUpfitter 2 relay (cutaway).   Not used (spare) (stripped chassis).  
55  20 AUpfitter 3 relay (cutaway).   Not used (spare) (stripped chassis).  
56  20 APower point 2 prep B-pillar connector.  
58  5 AUSB smart charger.  
59  10 APark 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 AInverter.  
71  30 AAnti-lock brake system valves.  
72  10 ABrake on and off switch.  
73  —  Not used.  
74  —  Not used.  
75  —  Not used.  
76  60 AAnti-lock brake system pump.  
77  30 AVoltage quality module power – body control module.  
78  10 ATrailer tow stop lamps.  
79  —  Not used.  
80  10 ATrailer tow backup lamps.  
81  —  Not used.  
82  5 ARun/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 AB-pillar (cutaway).   Instrument panel (stripped chassis).  
93  10 APark lamps 3 (special order vehicle).  
94  10 APark lamps 2 (special order vehicle).  
95  20 AStop lamp relay.  
96  —  Not used.  
97  50 AEngine.   B-pillar vehicle connector.   Instrument panel.  
98  30 ATrailer tow battery charge.  
99  40 AInstrument panel connector.  
100  —  Not used.  
101  —  Not used.  
102  —  Not used.  
103  —  Not used.  
104  —  Not used.  
105  15 ATrailer 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   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.

2021 Ford E-450 Passenger Fuse Box Diagram
Fuse Number  Fuse Rating  Protected Component  
1  —  Not used.  
2  10 ALeft-hand front and right-hand front door lock switch (cutaway).   Inverter (cutaway).   Connector (stripped chassis).  
3  7.5 APower mirror switch (cutaway).  
—  Not used (stripped chassis).  
4  20 ATrailer brake control.  
5  20 ANot used (spare).  
6  10 ANot used (spare).  
7  10 ANot used (spare).  
8  10 ANot used (spare).  
9  10 ANot used (spare).  
10  —  Not used.  
11  —  Not used.  
12  7.5 ASmart datalink connector.   Enterprise wired-in-device.  
13  7.5 ACluster.   Steering column control module.  
14  15 ANot used (spare).  
15  15 ANot used (spare).  
16  —  Not used.  
17  7.5 ANot used.  
18  7.5 AClimate mode switch.  
19  5 ARadio transceiver module.  
20  5 AIgnition switch.  
21  5 ANot used.  
22  5 ABody builder B-pillar connector (cutaway).  
5 ANot used (stripped chassis).  
23  30 ANot used (spare).  
24  30 ANot used (spare).  
25  20 ANot used (spare).  
26  30 ANot used (spare).  
27  30 ANot used (spare).  
28  30 ANot used (spare).  
29  15 AUpfitter interface module (cutaway).  
—  Not used (stripped chassis).  
30  5 ANot used (spare).  
31  10 ASmart datalink connector.  
32  20 ARadio.  
33  —  Not used.  
34  30 ANot used (spare).  
35  5 ATow haul switch.  
36  15 ARear view mirror (cutaway).   Rear view camera (cutaway).  
—  Not used (stripped chassis).  
37  20 ANot used (spare).  
38  30 ARear 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   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.

Missing ImageIf 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 TypesMissing Image

AMicro 2.
BMicro 3.
CMaxi.
DMini.
EM Case.
FJ Case.
GJ Case Low Profile.
HSlotted M Case.

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