Ford Expedition 2012 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 Expedition 2012, 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 # | Function | Amperage |
|---|---|---|
| 1 | Driver window | 30 |
| 2 | Driver side memory module | 15 |
| 3 | Audio rear seat controls, Satellite radio, SYNC® | 15 |
| 4 | Not used (spare) | 30 |
| 5 | Keypad illumination, 3rd row seat enable, Brake shift interlock (BSI), Smart fuse panel logic power | 10 |
| 6 | Turn signals | 20 |
| 7 | Low' beam headlamps (left) | 10 |
| 8 | Low' beam headlamps (right) | 10 |
| 9 | Interior lights | 15 |
| 10 | Switch backlighting, Puddle lamps | 15 |
| 11 | Not used (spare) | 10 |
| 12 | Power mirrors, Driver seat memory switch | 7.5 |
| 13 | Not used (spare) | 5 |
| 14 | Power liftgate module - keep-alive power | 10 |
| 15 | Climate control, Global positioning satellite module | 10 |
| 16 | Not used (spare) | 15 |
| 17 | Door locks, Liftgate release, Liftglass release | 20 |
| 18 | Second row heated seats | 20 |
| 19 | Rear wiper | 25 |
| 20 | Adjustable pedals, Datalink | 15 |
| 21 | Fog lamps | 15 |
| 22 | Park lamps | 15 |
| 23 | High beam headlamps | 15 |
| 24 | Horn | 20 |
| 25 | Demand lamps, Glovebox, Visor | 10 |
| 26 | Instrument panel cluster | 10 |
| 27 | Ignition switch | 20 |
| 28 | Radio | 5 |
| 29 | Instrument panel cluster | 5 |
| 30 | Not used (spare) | 5 |
| 31 | Not used (spare) | 10 |
| 32 | Airbag module | 10 |
| 33 | Not used (spare) | 10 |
| 34 | Not used (spare) | 5 |
| 35 | Rear park assist, 4x4, rear video camera, 2nd row heated seats | 10 |
| 36 | Passive anti-theft system | 5 |
| 37 | Climate control | 10 |
| 38 | Subwoofer | 20 |
| 39 | Radio | 20 |
| 40 | Navigation amplifier | 20 |
| 41 | Power windows, Power vents, Power moon roof, Auto dimming rear view mirror, 110V AC power point | 15 |
| 42 | Not used (spare) | 10 |
| 43 | Rear wiper logic, Rain sensor | 10 |
| 44 | Trailer tow battery charge relay coil | 10 |
| 45 | Front wiper logic | 5 |
| 46 | Climate control, Auxiliary relay control | 7.5 |
| 47 | Power windows, Moon roof | 30 |
| 48 | Delayed accessory relay |
Power distribution box .xl Fuse Box
| Fuse # | Function | Amperage |
|---|---|---|
| 1 | Powertrain control module (PCM) relay | |
| 2 | Starter relay | |
| 3 | Blower motor relay | |
| 4 | Trailer tow (TT) battery charge relay | |
| 5 | Fuel pump relay | |
| 6 | Electronic fan 1 relay | |
| 7 | Rear window defroster/heated mirror relay | |
| 8 | Electronic fan 3 relay | |
| 9 | Run/Start (R/S) relay | |
| 10 | Rear air suspension (RAS) relay | |
| 11 | Power running board | 40 |
| 12 | R/S relay | 40 |
| 13 | Starter relay | 30 |
| 14 | Electronic fan | 40 |
| 15 | Not used | |
| 16 | Electronic fan | 40 |
| 17 | Not used | |
| 18 | Trailer brake | 30 |
| 19 | RAS relay feed | 60 |
| 20 | 4x4 module | 20 |
| 21 | TT battery charge relay | 30 |
| 22 | Passenger power seat | 30 |
| 23 | A/C clutch relay | |
| 24 | TT park lamp relay | |
| 25 | Not used | |
| 26 | Transmission control module (TCM) keep-alive power | 15 |
| 27 | 4x4 | 20 |
| 28 | Trailer tow park lamp relay | 25 |
| 29 | Backup lamps, Integrated wheel end solenoid | 20 |
| 30 | A/C clutch relay | 10 |
| 31 | Not used | |
| 32 | Blower motor relay | 40 |
| 33 | 110V AC power point | 40 |
| 34 | Auxiliary blower motor | 30 |
| 35 | PCM relay | 30 |
| 36 | Power liftgate | 30 |
| 37 | TT left hand stop/turn relay | |
| 38 | TT right hand stop/turn relay | |
| 39 | Backup lamps relay | |
| 40 | Electronic fan 2 relay | |
| 41 | PCM keep-alive power | 10 |
| 42 | Not used | |
| 43 | Brake on/off switch | 5 |
| 44 | Fuel pump relay | 20 |
| 45 | TT stop/turn lamps relay | 25 |
| 46 | Not used | |
| 47 | Not used | |
| 48 | RAS module | 30 |
| 49 | Not used | |
| 50 | Front wiper motor relay | 30 |
| 51 | Rear window defroster/heated mirror relay | 40 |
| 52 | Anti-lock brake system (ABS) R/S feed | 10 |
| 53 | RAS module | 10 |
| 54 | TCM R/S feed | 5 |
| 55 | Fuel pump relay coil R/S feed | 5 |
| 56 | Passenger compartment fuse panel R/S feed | 30 |
| 57 | Blower motor relay coil | 10 |
| 58 | TT backup lamps | 15 |
| 59 | Heated mirrors | 15 |
| 60 | One-touch start diode | |
| 61 | Fuel pump diode | |
| 62 | Not used | |
| 63 | Electronic fan | 25 |
| 64 | Moon roof | 30 |
| 65 | Auxiliary power point (instrument panel) | 20 |
| 66 | Auxiliary power point (rear of center console) | 20 |
| 67 | Front row climate controlled seats | 40 |
| 68 | ABS valves | 60 |
| 69 | ABS pump | 60 |
| 70 | Third row power fold seat | 40 |
| 71 | Auxiliary power point/cigar lighter | 20 |
| 72 | Auxiliary power point (right rear quarter panel) | 20 |
| 73 | Not used | |
| 74 | Driver power seat | 30 |
| 75 | Vehicle power 1 - PCM | 20 |
| 76 | Vehicle power 2 - PCM | 20 |
| 77 | Vehicle power 4 - ignition coils | 15 |
| 78 | Not used | |
| 79 | Vehicle power 3 - PCM | 20 |
| 80 | Not used | |
| 81 | Not used | |
| 82 | Not used | |
| 83 | Not used | |
| 84 | Not used | |
| 85 | Wiper motor relay |
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.
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.