Ford Bronco 2021 Fuse Replacement

Having an electrical issue? It could be a blown fuse — an easy fix you can do yourself.

Follow the steps below to find and replace the fuse:

Step 1: Find the Fuse Box

In your Ford Bronco 2021, the interior fuse box is typically located under the dashboard on the driver's side. Some vehicles also have an additional fuse box in the engine compartment. Check your owner's manual or the fuse box cover for the exact location.

Step 2: Identify the Corresponding Fuse

Below is the complete fuse list for your vehicle. Find the circuit that isn't working and note the fuse number and amperage.

Passenger Compartment Fuse Box Fuse Box

Fuse #FunctionAmperage
1Not used.5
2Not used.5
3Not used.10
4Ignition switch. Steering column lock.10
5Lock. Unlock.20
6DC-AC inverter.10
7Passenger door module.30
8Parking assist control module.5
9Auto-dimming interior mirror. Lane keeping system. Passenger airbag deactivation indicator.5
10Extended power module.10
11Telematics control unit module.5
12Keyless keypad switch.5
13Driver door unlock.15
14Driver door module.30
15Not used (spare).15
16Not used (spare).15
17SYNC. Receiver transceiver module. Integrated control panel.15
18Wireless accessory charging module. All terrain control module.7.5
19Not used (spare).7.5
20Not used (spare).10
21Not used (spare).7.5
22Not used (spare).7.5
23Not used (spare).20
24Not used (spare).20
25Not used (spare).30

Engine Compartment Fuse Box Fuse Box

Fuse #FunctionAmperage
1Aftermarket auxiliary lighting.30
2Not used.
32021: Windshield heated washer jets.10
4Supplemental heater.60
5Supplemental heater.40
6Supplemental heater.40
7Heated wiper park.20
8Not used.
9Power inverter.60
10Starter motor.30
11Powertrain control module.15
12Powertrain control module.15
13Powertrain control module.15
14Powertrain control module.15
15Not used.
16Not used.
17Not used.
18Powertrain control module.10
19Anti-lock brake system module.10
20Data link connector.10
21Headlamp switch.5
22Amplifier.20
23Not used.
24Not used.
25Left-hand enhanced headlamps.25
26Right-hand enhanced headlamps.25
27Not used.
28Not used.
29Not used.
302021: Electronic stability control.10
31Electronic power assist steering.5
32Body control module.30
33Front parking aid camera. Rear view camera. Blind spot information system. Gear shift actuator.10
34Not used.
35Heated steering wheel.15
36Not used.
37Horn.20
38Blower motor.40
39Not used.
40Brake on-off switch.10
41Amplifier.20
42Driver power seat.30
43Anti-lock brake system valves.40
44Trailer tow module.40
45Passenger power seat.30
46Not used.
47Heated seats.20
48Not used.
49Anti-lock brake system pump.60
50Cooling fan.60
51Moonroof.30
52USB smart charger.5
53Not used.
54Not used.
55Not used.
56A/C clutch.10
57Flood light.5
58Not used.
59Body control module.40
60USB smart charger.5
61Auxiliary power point.20
62Not used.
63Not used.
64Not used.
65Not used.
66Not used.
67Not used.
68Not used.
69Port fuel injectors.15
70Auxiliary power point.20
71Auxiliary power point.20
72Rear window wiper.20
73Not used.
74Windshield wiper motor.30
75Heated exterior mirrors.10
76Heated rear window.30
77Not used.
78Liftgate window release.15
79Not used.
80Fuel pump.20
81Rear window washer pump.10
82Power inverter.40
83Not used.
84Driveline control module.40
85Rain sensor.5
86Not used.
87Not used.
88Not used.

Step 3: Check the Fuse

Use the plastic fuse puller, typically found in the fuse box, to remove the fuse. Hold it up to a light source. If the metal filament inside is broken or charred, the fuse is bad and needs to be replaced.

Comparison of a good fuse and a blown fuse — the blown fuse has a broken filament

Step 4: How to Get a Replacement

You can buy a replacement fuse at any auto parts store. Make sure you match the **amperage (A)** and **physical size** of the fuse exactly. For example, if you need a 20A fuse, get a 20A fuse.

Step 5: Replace the Fuse

Gently press the new fuse into the empty slot. You should feel a slight click when it's securely in place. Test the affected circuit to confirm it's working again.

What Now?

Fuse Was Blown — What to Buy

Ask at any auto parts store (AutoZone, O'Reilly, Advance Auto) for a blade fuse with the same amperage printed on the old one (e.g., 10A, 15A, 20A). Also match the physical size — mini (most modern cars), standard, or maxi. Replacement fuses cost under $5 and most stores sell assorted packs.

Fuse Looks Fine — Other Causes

If the fuse is intact, the problem isn't a blown fuse. Common alternatives include a bad relay (a click-sized electrical switch), a faulty wiring connection, or a failed component (motor, switch, module). At this point, a mechanic's diagnostic is the most reliable next step.

Frequently Asked Questions

What happens if I put in the wrong amperage fuse?

Higher amperage fuses won't protect the circuit and can cause wiring damage or fire. Lower amperage fuses will blow again immediately. Always match the exact amperage.

Why does my fuse keep blowing?

A repeatedly blown fuse indicates an underlying short circuit or overload. Replacing it again won't fix the root cause — consult a mechanic.

Do I need any tools?

Most cars come with a plastic fuse puller in the fuse box lid. If not, fine-tip needle-nose pliers work. A small flashlight helps.

How do I know what size fuse to buy?

Match the amperage printed on the old fuse (e.g., 10A, 15A, 20A) and the physical blade size (mini, standard, maxi). Auto parts stores carry assorted packs.