2021 FORD Expedition Fuses and Fuse Box User Guide
This guide covers the 2021 Ford Expedition’s fuses and fuse box locations, operations, and troubleshooting. Understanding your car’s electrical system improves performance and safety.
2023 – 2024 Ford Expedition Specs, Price, Features, Mileage and Review
Video: 2021 FORD Expedition Fuses
FUSE BOX LOCATIONS
Engine Compartment Fuse Box
The power distribution 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.
Passenger Compartment Fuse Box
The fuse box is in the passenger compartment under the dashboard. You may need to remove a trim panel to access the box.
FUSE SPECIFICATION CHART
Engine Compartment Fuse Box
WARNING: Always disconnect the battery before servicing high current fuses.
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.
You need to reset some features when you, or someone else, disconnects and reconnects the battery.
Replace fuses with the same type and rating.
| Fuse Number | Fuse Rating | Protected Component |
| 1 | 25 A | Horn. |
| 2 | 50 A | Electric fan 1. |
| 3 | 30 A | Front wiper motor. |
| 4 | 50 A | Inverter. |
| 5 | 30 A | Starter relay. |
| 6 | 20 A | Power point #1. |
| 8 | 20 A | Power point #2. |
| 10 | 5 A | Rain sensor. |
| 12 | 20 A | Trailer tow light module. |
| 13 | 10 A | 4×4 module. |
| Fuse Number | Fuse Rating | Protected Component |
| Heated backlight relay coil. Heated mirror relay coil. Heated wiper park relay coil. Transmission isolation relay coil. |
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| 14 | 15 A | Not used (spare). |
| 15 | 15 A | Voltage quality module run/start power. Blindspot information system. Image processing module B. Front view camera. Rear view camera. Cruise control module. |
| 16 | 10 A | Powertrain control module run/start feed. |
| 17 | 10 A | Anti-lock brake system run/start feed. |
| 18 | 10 A | Electronic power assist steering run/start feed. |
| 19 | — | Not used. |
| 20 | 40 A | Front blower. |
| 21 | 40 A | Passenger seat motors. |
| 22 | — | Not used. |
| 23 | 10 A | Alternator A-line. |
| 24 | 30 A | Trailer brake control module. |
| 25 | 50 A | Body control module power 1. |
| 26 | 50 A | Electric fan 3. |
| 27 | 40 A | Driver seat motors. |
| 28 | 15 A | Rear heated seats. Rear seat climate control module. |
| 29 | — | Not used. |
| 30 | 25 A | Trailer tow class II-IV battery charge. |
| 31 | 50 A | Power folding seat module. |
| 32 | 10 A | A/C clutch. |
| 33 | — | Not used. |
| Fuse Number | Fuse Rating | Protected Component |
| 34 | — | Not used. |
| 35 | 20 A | Vehicle power 4. |
| 36 | 10 A | Vehicle power 3. |
| 37 | 25 A | Vehicle power 2. |
| 38 | 25 A | Vehicle power 1. |
| 39 | — | Not used. |
| 41 | — | Not used. |
| 43 | — | Not used. |
| 45 | 20 A | Front and rear washer pump. |
| 46 | 7.5 A | Family entertainment system. |
| 47 | — | Not used. |
| 48 | — | Not used. |
| 49 | — | Not used. |
| 50 | 30 A | Fuel pump. |
| 51 | 20 A | Power point #3. |
| 52 | 50 A | Body control module voltage quality module. |
| 53 | 25 A | Trailer tow park lamps relay. Trailer tow control module. |
| 54 | 40 A | Electronic limited slip differential relay. |
| 55 | 40 A | Auxiliary blower. |
| 56 | 20 A | Power point #4. |
| 58 | 5 A | Not used (spare). |
| 59 | — | Not used. |
| 60 | 5 A | Not used (spare). |
| 61 | 25 A | Not used (spare). |
| 62 | 25 A | Not used (spare). |
| 63 | 25 A | 4×4 module. |
| Fuse Number | Fuse Rating | Protected Component |
| 64 | — | Not used. |
| 65 | — | Not used. |
| 66 | — | Not used. |
| 67 | — | Not used. |
| 69 | 30 A | Power liftgate module. |
| 70 | 40 A | Anti-lock brake system and parking brake module. |
| 71 | 25 A | 4×4 module. |
| 72 | — | Not used. |
| 73 | — | Not used. |
| 74 | 10 A | Trailer tow backup lamps. |
| 75 | — | Not used. |
| 76 | 50 A | Body control module power 2. |
| 77 | 30 A | Climate control seat module. |
| 78 | — | Not used. |
| 79 | — | Not used. |
| 80 | 10 A | Heated wiper park. |
| 81 | — | Not used. |
| 82 | — | Not used. |
| 83 | 15 A | Not used (spare). |
| 84 | — | Not used. |
| 85 | — | Not used. |
| 86 | 5 A | USB smart charger #5. |
| 87 | 5 A | USB smart charger #3. |
| 88 | 10 A | Multi-contour seats relay. |
| 89 | 40 A | Power running boards. |
| 91 | — | Not used. |
| Fuse Number | Fuse Rating | Protected Component |
| 93 | 15 A | Heated mirrors. |
| 94 | 5 A | USB smart charger #1. |
| 95 | 10 A | USB smart charger #2. |
| 96 | 30 A | Rear wiper motor relay. |
| 97 | 40 A | Not used (spare). |
| 98 | 15 A | Transmission oil pump. |
| 99 | 40 A | Heated backlight. |
| 100 | 20 A | Power point #5. |
| 101 | 25 A | Electric fan 2. |
| 102 | — | Not used. |
| 103 | — | Not used. |
| 104 | — | Not used. |
| 105 | — | Not used. |
Note: Spare fuse amperage may vary.
| Relay Number | Protected Component |
| R02 | Powertrain control module. |
| R05 | Electric fan 2. |
Passenger Compartment Fuse Box
| Fuse Number | Fuse Rating | Protected Component |
| 1 | — | Not used. |
| 2 | 10 A | Driver seat switch. |
| 3 | 7.5 A | Driver door unlock. |
| 4 | 20 A | Speaker amplifier. |
| 5 | — | Not used. |
| 6 | 10 A | Smart datalink connector logic. |
| 7 | 10 A | Rear audio control module. |
| 8 | 5 A | Wireless accessory charger. Hands-free liftgate module. |
| 9 | 5 A | Keypad. Combined sensor module. |
| 10 | — | Not used. |
| 11 | — | Not used. |
| 12 | 7.5 A | Instrument cluster. |
| Fuse Number | Fuse Rating | Protected Component |
| 13 | 7.5 A | Steering column control module. Smart datalink connector logic. Climate control module. Gear shift module. |
| 14 | 15 A | Brake switch. |
| 15 | 15 A | SYNC. |
| 16 | — | Not used. |
| 17 | — | Not used. |
| 18 | 7.5 A | Gear shift module. Column shifter. |
| 19 | 5 A | Telematics control unit module. |
| 20 | 5 A | Ignition switch. |
| 21 | 5 A | In-vehicle temperature and humidity sensor. |
| 22 | 5 A | Electrochromic mirror. Second row heated seat module. |
| 23 | 30 A | Power window switch. Power mirror switch. Left-hand front door zone module. |
| 24 | 30 A | Moonroof logic. |
| 25 | 20 A | Speaker amplifier 2. |
| 26 | 30 A | Right-hand front door zone module. |
| 27 | 30 A | Left-hand rear door zone module. |
| 28 | 30 A | Right-hand rear door zone module. |
| 29 | 15 A | Adjustable pedals. |
| 30 | 5 A | Trailer tow control module. |
| 31 | 10 A | Rear climate control module. Drive mode switch module. Terrain management switch. Radio frequency transceiver module. 4×4 switch. |
| 32 | 20 A | Audio control module. |
| Fuse Number | Fuse Rating | Protected Component |
| 33 | — | Not used. |
| 34 | 30 A | Run/start relay. |
| 35 | 5 A | Not used (spare). |
| 36 | 15 A | Image processing module A. Automated park assist module. Continuous control damping module. |
| 37 | 20 A | Heated steering wheel. |
| 38 | 30A Circuit Breaker | Left-hand rear power window. Right-hand rear power window. |
Note: Spare fuse amperage may vary.
CHANGING A FUSE
Fuses
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.
If 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 Types
- A Micro 2.
- B Micro 3.
- C Maxi.
- D Mini.
- E M Case.
- F J Case.
- G J Case Low Profile.
- H Slotted M Case.
Useful Links:
2024 Ford Expedition Specs, Price, Features, Mileage and Review
2021 FORD Expedition Warning Lights and Indicators User Guide