Ford Expedition 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 Expedition 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 # | Function | Amperage |
|---|---|---|
| 1 | Spare | |
| 2 | Driver seat switch. | 10 |
| 3 | Driver door unlock. | 7.5 |
| 4 | Speaker amplifier. | 20 |
| 5 | Spare | |
| 6 | Smart datalink connector logic. | 10 |
| 7 | Rear audio control module. | 10 |
| 8 | Wireless accessory charger. Hands-free liftgate module. | 5 |
| 9 | Keypad. Combined sensor module. | 5 |
| 10 | Spare | |
| 11 | Spare | |
| 12 | Instrument cluster. | 7.5 |
| 13 | Steering column control module. Smart datalink connector logic. Climate control module (2021). Gear shift module (2021). | 7.5 |
| 14 | Brake switch. | 15 |
| 15 | SYNC. | 15 |
| 16 | Spare | |
| 17 | Spare | |
| 18 | 2020: Key inhibit solenoid. Gearshift module. 2021: Gear shift module. Column shifter. | 7.5 |
| 19 | Telematics control unit module. | 5 |
| 20 | Ignition switch. | 5 |
| 21 | Humidity and in-car temperature sensor. | 5 |
| 22 | Electrochromic mirror. Second row heated seat module. | 5 |
| 23 | Power window switch. Power mirror switch. Left-hand front door zone module. | 30 |
| 24 | Moonroof logic. | 30 |
| 25 | Speaker amplifier 2. | 20 |
| 26 | Right-hand front door zone module. | 30 |
| 27 | Left-hand rear door zone module. | 30 |
| 28 | Right-hand rear door zone module. | 30 |
| 29 | Adjustable pedals. | 15 |
| 30 | Trailer tow control module. | 5 |
| 31 | Rear climate control module. Drive mode switch module. Terrain management switch. Radio frequency transceiver module. 4x4 switch. | 10 |
| 32 | Audio control module. | 20 |
| 33 | Spare | |
| 34 | Run/start relay. | 30 |
| 35 | Not used (spare). | 5 |
| 36 | Image processing module A. Automated park assist module. Continuous control damping module. | 15 |
| 37 | Heated steering wheel. | 20 |
| 38 | Left-hand rear power window. Right-hand rear power window. | 30 |
Power distribution box Fuse Box
| Fuse # | Function | Amperage |
|---|---|---|
| 1 | Horn. | 25 |
| 2 | Fan 1. | 50 |
| 3 | Front wiper motor. | 30 |
| 4 | Inverter. | 50 |
| 5 | Starter relay. | 30 |
| 6 | Power point 1. | 20 |
| 8 | Power point 2. | 20 |
| 10 | Rain sensor. | 5 |
| 12 | Trailer tow light module. | 20 |
| 13 | 4x4 module. Heated backlight relay coil. Heated mirror relay coil. Heated wiper park relay coil. Transmission isolation relay coil. | 10 |
| 14 | Not used (spare). | 15 |
| 15 | Voltage quality module run/start power. Blindspot information system. Image processing module B. Front view camera. Rear view camera. Cruise control module. | 15 |
| 16 | Powertrain control module run/start feed. | 10 |
| 17 | Anti-lock brake system run/start feed. | 10 |
| 18 | Electronic power assist steering run/start feed. | 10 |
| 19 | Spare | |
| 20 | Front blower. | 40 |
| 21 | Passenger seat motors. | 40 |
| 22 | Spare | |
| 23 | Alternator A-line. | 10 |
| 24 | Trailer brake control module. | 30 |
| 25 | Body control module power 1. | 50 |
| 26 | Electronic fan 3. | 50 |
| 27 | Driver seat motors. | 40 |
| 28 | Rear heated seats. Rear seat climate control module. | 15 |
| 29 | 2020: Integrated wheel end solenoid. | 10 |
| 30 | Trailer tow class ll-IV battery charge. | 25 |
| 31 | Power folding seat module. | 50 |
| 32 | A/C clutch. | 10 |
| 33 | Spare | |
| 34 | Spare | |
| 35 | Vehicle power 4. | 20 |
| 36 | Vehicle power 3. | 10 |
| 37 | Vehicle power 2. | 25 |
| 38 | Vehicle power 1. | 25 |
| 39 | Spare | |
| 41 | Spare | |
| 43 | Spare | |
| 45 | Front and rear washer pump. | 20 |
| 46 | Family entertainment system. | 7.5 |
| 47 | Spare | |
| 48 | Spare | |
| 49 | Spare | |
| 50 | Fuel pump. | 30 |
| 51 | Power point 3. | 20 |
| 52 | Body control module voltage quality module. | 50 |
| 53 | Trailer tow park lamps relay. Trailer tow control module. | 25 |
| 54 | Electronic limited slip differential relay. | 40 |
| 55 | Auxiliary blower. | 40 |
| 56 | Power point 4. | 20 |
| 58 | Not used (spare). | 5 |
| 59 | Spare | |
| 60 | Not used (spare). | 5 |
| 61 | Not used (spare). | 25 |
| 62 | Not used (spare). | 25 |
| 63 | 4x4 module. | 25 |
| 64 | Spare | |
| 65 | Spare | |
| 66 | Spare | |
| 67 | Spare | |
| 69 | Power liftgate module. | 30 |
| 70 | Anti-lock brake system and parking brake module. | 40 |
| 71 | 4x4 module. | 25 |
| 72 | Spare | |
| 73 | Spare | |
| 74 | Trailer tow backup lamps. | 10 |
| 75 | Spare | |
| 76 | Body control module power 2. | 50 |
| 77 | Climate control seat module. | 30 |
| 78 | Spare | |
| 79 | Spare | |
| 80 | Heated wiper park. | 10 |
| 81 | Spare | |
| 82 | Spare | |
| 83 | Not used (spare). | 15 |
| 84 | Spare | |
| 85 | Spare | |
| 86 | USB smart charger 5. | 5 |
| 87 | USB smart charger 3. | 5 |
| 88 | Multi-contour seats relay. | 10 |
| 89 | Power running boards. | 40 |
| 91 | Spare | |
| 93 | Heated mirrors. | 15 |
| 94 | USB smart charger 1. | 5 |
| 95 | USB smart charger 2. | 10 |
| 96 | Rear wiper motor relay. | 30 |
| 97 | Not used (spare). | 40 |
| 98 | Transmission oil pump. | 15 |
| 99 | Heated backlight. | 40 |
| 100 | Power point 5. | 20 |
| 101 | Fan 2. | 25 |
| 102 | Spare | |
| 103 | Spare | |
| 104 | Spare | |
| 105 | Spare | |
| Relay | Spare | |
| R02 | Powertrain control module. | |
| R05 | Electric fan 2. |
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.