2021 Ford Bronco U725 Fuse Box Diagram
The 2021 Ford Bronco (U725) has 2 fuse boxes. Choose the one you’re looking at.
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Engine compartment fuse box (power distribution box)
On the driver's side of the engine compartment, behind the brake fluid reservoir and next to the battery: release the cover latches and lift the lid, which carries the numbering plate on its inside. Drawn from plate E330939 of the 202101 manual, 58 numbered positions, the box seen from the fuse side with the fuses standing on end and their numbers printed sideways. Three groups of fuses sit around three round openings in the moulding; the openings are cover and mounting features, not relay sockets, and the Bronco's relays are not printed on this plate at all. M case cartridges are drawn with the M case body, Micro 2 blades with the smaller Micro 2 body.
| No. | Function | Amp | Description |
|---|---|---|---|
| 1 | 30 AMCASE | Body control module, battery power feed 1 | |
| 3 | 30 AMCASE | Body control module, battery power feed 2 | |
| 4 | 30 AMCASE | Fuel pump | |
| 6 | 25 AMICRO2 | Powertrain control module power supply | |
| 7 | 30 AMICRO2 | Powertrain components (engine sensors and actuators) | |
| 8 | 20 AMICRO2 | Powertrain components (engine sensors and actuators) | |
| 9 | 20 AMICRO2 | Ignition coils | |
| 13 | 40 AMCASE | Blower motor | |
| 16 | 10 AMICRO2 | Rear window washer | |
| 18 | 30 AMCASE | Starter motor | |
| 21 | 10 AMICRO2 | Not used (spare fuse) | |
| 22 | 10 AMICRO2 | 360-degree camera module | |
| 23 | 10 AMICRO2 | Anti-lock brake system, run/start feed | |
| 24 | 10 AMICRO2 | Powertrain control module, power steering control module | |
| 25 | 10 AMICRO2 | Blind spot information system, rear view camera, adaptive cruise control, driveline control module | |
| 26 | 15 AMICRO2 | Transmission control module (15 A in the owner's manual; 10 A in the wiring diagram) | |
| 28 | 60 AMCASE | Anti-lock brake system valves | |
| 29 | 60 AMCASE | Anti-lock brake system pump | |
| 30 | 30 AMCASE | Driver power seat | |
| 31 | 30 AMCASE | Passenger power seat | |
| 32 | 20 AMCASE | Auxiliary power point (12 V socket) | |
| 33 | 20 AMCASE | Auxiliary power point (12 V socket) | |
| 34 | 20 AMCASE | Auxiliary power point (12 V socket) | |
| 36 | 40 AMCASE | 150 W DC/AC power inverter | |
| 38 | 30 AMCASE | Heated seat module | |
| 42 | 30 AMCASE | Trailer brake control module | |
| 44 | 10 AMICRO2 | Brake on/off (stop lamp) switch | |
| 46 | 20 AMICRO2 | SYNC module (20 A in the owner's manual; 15 A in the wiring diagram) | |
| 50 | 40 AMCASE | Heated rear window | |
| 54 | 40 AMCASE | Driveline control module (4WD) | |
| 55 | 30 AMCASE | Trailer tow park lamp relay | |
| 58 | 20 AMCASE | Trailer tow backup (reversing) lamps | |
| 60 | 30 AMCASE | Upfitter (auxiliary) switch 1 (30 A in the owner's manual; 25 A in the wiring diagram) | |
| 61 | 15 AMCASE | Upfitter (auxiliary) switch 2 | |
| 62 | 10 AMICRO2 | Upfitter (auxiliary) switch 3 | |
| 63 | 10 AMICRO2 | Upfitter (auxiliary) switch 4 (10 A in the owner's manual; 5 A in the wiring diagram) | |
| 64 | 10 AMICRO2 | Upfitter (auxiliary) switch 5 (10 A in the owner's manual; 5 A in the wiring diagram) | |
| 65 | 10 AMICRO2 | Upfitter (auxiliary) switch 6 (10 A in the owner's manual; 5 A in the wiring diagram) | |
| 66 | 10 AMICRO2 | Stabilizer bar disconnect module (10 A in the owner's manual; 20 A in the wiring diagram) | |
| 69 | 30 AMCASE | Front windshield wiper | |
| 71 | 30 AMCASE | Rear window wiper | |
| 91 | 40 AMCASE | Trailer tow light module | |
| 100 | 20 AMICRO2 | Left-hand headlamp | |
| 101 | 20 AMICRO2 | Right-hand headlamp | |
| 107 | 30 AMCASE | Trailer tow battery charge | |
| 120 | 10 AMICRO2 | Fuel injectors (2.7 L EcoBoost) (10 A in the owner's manual; 15 A in the wiring diagram) | |
| 124 | 5 AMICRO2 | Not used (spare fuse) | |
| 125 | 10 AMICRO2 | USB smart charger 1 | |
| 139 | 5 AMICRO2 | USB smart charger 2 | |
| 140 | 5 AMICRO2 | Not used (spare fuse) | |
| 141 | 5 AMICRO2 | Not used (spare fuse) | |
| 146 | 20 AMICRO2 | Audio amplifier (20 A in the owner's manual; 5 A in the wiring diagram) | |
| 158 | 10 AMICRO2 | Stabilizer bar disconnect module, run/start feed | |
| 160 | 10 AMICRO2 | Smart data link connector (diagnostic port) (10 A in the owner's manual; 15 A in the wiring diagram) | |
| 182 | 60 AMCASE | Driver door module | |
| 183 | 60 AMCASE | Passenger door module | |
| 202 | 60 AMCASE | Body control module B+ feed | |
| 210 | 30 AMCASE | Body control module start/stop feed (30 A in the owner's manual; 60 A in the wiring diagram) |
Body control module fuse box (passenger compartment)
Low under the driver's side of the instrument panel, next to the brake pedal and left of the steering column: the trim panel along the bottom edge of the dash pulls towards you and swings down to expose the box. The launch manual (edition 202101) prints plate E145984 with the 30 A circuit-breaker socket 38 alone at the left-hand end, then the Micro 2 rows 1 2 3 and 4 5 above 23 to 28, where 26 sits in the column the upper row leaves open. The taller Micro 3 bodies follow in two ranks, 7 9 11 13 15 and 18 20 22 over 6 8 10 12 14 and 17 19 21, with 16 standing between 15 and 18. Positions 29 to 37 run along the bottom, 34 under 16. Rows read left to right. Each Micro 3 body carries two fuses, drawn as its two halves with the upper number on the upper half; 38 is an empty breaker socket, not a fuse.
| No. | Function | Amp | Description |
|---|---|---|---|
| 1 | Not used | ||
| 2 | 10 AMICRO2 | Power windows, DC/AC power inverter | |
| 3 | 7.5 AMICRO2 | Exterior mirrors, wireless charging module | |
| 4 | 20 AMICRO2 | Not used (spare fuse) | |
| 5 | Not used | ||
| 6 | 10 AMICRO3 | Anti-theft alarm horn | |
| 7 | 10 AMICRO3 | Not used (fuse fitted, no circuit assigned) | |
| 8 | 5 AMICRO3 | Not used (spare fuse) | |
| 9 | 5 AMICRO3 | Not used (spare fuse) | |
| 10 | Not used | ||
| 11 | Not used | ||
| 12 | 7.5 AMICRO3 | Climate control, gateway module | |
| 13 | 7.5 AMICRO3 | Instrument cluster, steering column control module | |
| 14 | 15 AMICRO3 | Not used (spare fuse) | |
| 15 | 15 AMICRO3 | Not used (spare fuse) | |
| 16 | Not used | ||
| 17 | 7.5 AMICRO3 | Not used (spare fuse) | |
| 18 | 7.5 AMICRO3 | Not used (spare fuse) | |
| 19 | 5 AMICRO3 | Ignition switch, headlamps | |
| 20 | 5 AMICRO3 | Telematics modem | |
| 21 | 5 AMICRO3 | In-vehicle temperature and humidity sensor | |
| 22 | 5 AMICRO3 | Not used (fuse fitted, no circuit assigned) | |
| 23 | 30 AMICRO2 | Not used (spare fuse) | |
| 24 | 30 AMICRO2 | Not used (spare fuse) | |
| 25 | 20 AMICRO2 | Not used (spare fuse) | |
| 26 | 30 AMICRO2 | Not used (spare fuse) | |
| 27 | 30 AMICRO2 | Not used (spare fuse) | |
| 28 | 30 AMICRO2 | Not used (spare fuse) | |
| 29 | 15 AMICRO2 | Not used (spare fuse) | |
| 30 | 5 AMICRO2 | Brake on/off (stop lamp) switch | |
| 31 | 10 AMICRO2 | Terrain management switch, integrated control panel, driveline and chassis controls switch panel, 12-inch centre display, radio frequency receiver module | |
| 32 | 20 AMICRO2 | Audio control module | |
| 33 | Not used | ||
| 34 | 30 AMICRO2 | Run/start relay | |
| 35 | 5 AMICRO2 | Not used (spare fuse) | |
| 36 | 15 AMICRO2 | Automatic high beam, image processing module A | |
| 37 | 20 AMICRO2 | Auto-dimming interior mirror, parking assist control module, heated steering wheel | |
| 38 | 30 A circuit breaker position, not used |