The Ford Expedition (2018-2021) is a full-size SUV available in standard and extended-length (Max) body styles. Its bold design, spacious interior, and advanced technology make it a top choice for large families and adventure seekers.
In terms of its electrical system, the Ford Expedition features two main fuse boxes: one located under the hood in the engine compartment and another inside the cabin, under the dashboard on the passenger side. The engine compartment fuse box manages essential systems such as the ignition, cooling fan, and exterior lights. The interior fuse box controls cabin features like the infotainment system, climate control, and power seats.
Relays found within these fuse boxes function as high-power switches for various systems, including the fuel pump, A/C compressor, and starter motor. Regular inspection of fuses and relays ensures the SUV’s key systems operate efficiently, minimizing unexpected failures.
MUST READ: DYI – How to Check Car Fuses?
(2018-2021) Ford Expedition fuse box and relay with Diagram
WARNING
- Never replace a fuse with one that has a higher amperage rating.
- A fuse with a too-high amperage could damage the electrical part and cause a fire.
- On no account should fuses be repaired (e.g. patched up with tin foil or wire) as this may cause serious damage elsewhere in the electrical circuit or cause a fire.
- If a fuse blows repeatedly, do not keep replacing it. Instead, have the cause for the repeated short circuit or overload tracked and fixed.
- Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.
Ford Expedition 2018-2021 fuse assignment
Ford Expedition Year of production: 2018, 2019, 2020, 2021
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.
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.
Fuse Box Diagrams
2018
Passenger Compartment Fuse Box
List of fuses in the passenger compartment fuse box (2018)
| № | A | Protected Component |
|---|---|---|
| 1 | – | Not used. |
| 2 | 7.5A1 | Driver seat switch. |
| 3 | 20A1 | Driver door unlock. |
| 4 | 5A1 | Trailer brake controller. |
| 5 | 20A1 | Speaker amplifier. |
| 6 | 10A2 | Not used (spare). |
| 7 | 10A2 | Not used (spare). |
| 8 | – | Not used. |
| 9 | 10A2 | Rear seat entertainment module. Head up display. |
| 10 | 5A2 | Wireless accessory charger module. Hands free liftgate module. Power liftgate module. |
| 11 | 5A2 | Keypad. Combined sensor module. |
| 12 | 7.5A2 | Cluster. Electronic control panei. Smart datalink connector logic. |
| 13 | 7.5A2 | Gear shift module. Steering column control module. |
| 14 | 10A2 | Extended power module. Brake switch. |
| 15 | 10A2 | Smart datalink connector power. |
| 15 | 15A1 | Liftglass release. |
| 17 | 5A2 | Telematics control unit – modem. |
| 18 | 5A2 | Ignition switch. Key inhibit solenoid. Push button start switch. |
| 19 | 7.5A2 | Transmission control switch. Gearshift module. |
| 20 | 75A2 | Not used. |
| 21 | 5A2 | Humidity and in-car temperature sensor. |
| 22 | 5A2 | Electrochromatic mirror. Second row heated seat module. |
| 23 | 10A1 | Moonroof logic. Inverter. Power window switch. Power mirror switch. |
| 24 | 20A1 | Central lock unlock |
| 25 | 30A1 | Left front door zone module. |
| 25 | 30A1 | Right front door zone module. |
| 27 | 30A1 | Moonroof. |
| 28 | 20A1 | Stereo amplifier. |
| 29 | 30A1 | Left rear door zone module. |
| 30 | 30A1 | Right rear door zone module. |
| 31 | 15A1 | Adjustable pedais. |
| 32 | 10A1 | SYNC Drive mode switch module. 4×4 switch. Radio frequency transceiver module. Rear heating, ventilation and air condi-tioning control module. |
| 33 | 20A1 | Audio control module. |
| 34 | 30A1 | Run/start relay. |
| 35 | 5A1 | Extended power mode module. |
| 36 | 15A1 | Image Processing module A. Automated park assist module. Continuous control damping module. |
| 37 | 20A1 | Heated steering wheel. |
| 38 | 30A Circuit Breaker | Left rear power window. Right rear power window. |
| 1 Micro 2 fuse. 2 Micro 3 fuse | ||
Engine Compartment Fuse Box
List of fuses in the engine compartment fuse box (2018)
| № | A | Protected Component |
|---|---|---|
| 1 | 25A1 | Horn. |
| 2 | 50A2 | Fan 1. |
| 3 | 30A2 | Front wiper motor. |
| 4 | – | Not used. |
| 5 | 30A2 | Starter relay. |
| 6 | 20A2 | Power point 1. |
| 8 | 20A2 | Power point 2. |
| 10 | 5A1 | Rain sensor. |
| 12 | – | Not used. |
| 13 | 10 A1 | 4×4 module. Heated backlite. Heated mirror relay coil. Heated wiper park relay coil. Transmission isolation relay coil. |
| 14 | 15A1 | Transmission control module. |
| 15 | 15A1 | Voltage quality module run/start power. Blindspot information system. Head Up Display. Image Processing module B. Front view camera. Rear view camera. Cruise control module. |
| 16 | 10A1 | Powertrain control module (PCM) run/ start feed. |
| 17 | 10A1 | Antilock brake system run/ start feed. |
| 18 | 10A1 | Electronic power assist steering run / start feed. |
| 19 | – | Not used. |
| 20 | 40A2 | Front blower. |
| 21 | 40A2 | Passenger seat motors. |
| 22 | 20A1 | Not used. |
| 23 | 10A1 | Alternator A-line. |
| 24 | 30A2 | Trailer brake control module. |
| 25 | 50A2 | Body control module power 1. |
| 26 | 50A2 | Electronic fan 3. |
| 27 | 40A2 | Driver seat motors. |
| 28 | 15A1 | Rear heated seats. |
| 29 | 10A1 | Integrated wheel end solenoid. |
| 30 | 25A2 | Trailer tow class ll-IV battery charge. |
| 31 | 50A2 | Power folding seat module. |
| 32 | 10A1 | A/C clutch. |
| 33 | – | Not used. |
| 34 | – | Not used. |
| 35 | 20A1 | Vehicle power 4. |
| 36 | 10A1 | Vehicle power 3. |
| 37 | 25A1 | Vehicle power 2. |
| 38 | 25A1 | Vehicle power 1. |
| 39 | – | Not used. |
| 41 | 50A2 | Inverter. |
| 43 | 20A2 | Trailer Tow Light Module Class II-IV. |
| 45 | 20A2 | Front/rear washer pump. |
| 46 | 7.5A1 | Family entertainment system. |
| 47 | – | Not used. |
| 48 | – | Not used. |
| 49 | – | Not used. |
| 50 | 30A2 | Fuel pump. |
| 51 | 20A2 | Power point 3. |
| 52 | 50A2 | Body control module (BCM) voltage quality module (VQM). |
| 53 | 25 A2 | Trailer tow park lamps relay. |
| 54 | 40A2 | Electronic limited slip differential relay. |
| 55 | 40A2 | AUX blower. |
| 56 | 20A2 | Power point 4. |
| 58 | 5A1 | Not used (spare). |
| 59 | – | Not used. |
| 60 | 5A1 | Not used (spare). |
| 61 | 25A1 | Not used (spare). |
| 62 | 25A1 | Not used (spare). |
| 63 | 25A1 | 4×4 module. |
| 64 | – | Not used. |
| 65 | – | Not used. |
| 66 | – | Not used. |
| 67 | – | Not used. |
| 69 | – | Not used. |
| 70 | 40A2 | Anti-lock brake system / parking brake module. |
| 71 | 25A2 | 4×4 module. |
| 72 | – | Not used. |
| 73 | – | Not used. |
| 74 | 10A1 | Trailer tow backup lamps. |
| 75 | – | Not used. |
| 76 | 50A2 | Body control module power 2. |
| 77 | 30A2 | Climate controlled (Heated/Vented) seat module. |
| 78 | 20A1 | Not used (spare). |
| 79 | – | Not used. |
| 80 | 10A1 | Heated wiper park. |
| 81 | – | Not used. |
| 82 | – | Not used. |
| 83 | 15A1 | Transmission control module power. |
| 84 | – | Not used. |
| 85 | – | Not used. |
| 86 | 5A1 | USB smart charger 5. |
| 87 | 5A1 | USB smart charger 3. |
| 88 | 10A1 | Multi-contour seats relay. |
| 89 | 40A2 | Power running boards. |
| 91 | 30A2 | Power liftgate module. |
| 93 | 15A1 | Heated mirrors. |
| 94 | 5A1 | USB smart charger 1. |
| 95 | 10A1 | USB smart charger 2. |
| 96 | 30A2 | Rear wiper motor relay. |
| 97 | 40A2 | Intercooler puller relay fan. |
| 98 | 15A2 | Transmission oil pump. |
| 99 | 40A2 | Heated backlite. |
| 100 | 20A2 | Power point 5. |
| 101 | 25A2 | Fan 2. |
| 102 | – | Not used. |
| 103 | – | Not used. |
| 104 | – | Not used. |
| 105 | – | Not used. |
| Relays | ||
| R02 | Electric fan 2. | |
| R05 | Powertrain Control Module. | |
| 1 Micro fuse. 2 M case use. | ||
2019
Passenger Compartment Fuse Box
List of fuses in the passenger compartment fuse box (2019)
| № | A | Protected Component |
|---|---|---|
| 1 | – | Not used. |
| 2 | 7.5A1 | Driver seat switch. |
| 3 | 20A1 | Driver door unlock. |
| 4 | 5A1 | Trailer brake controller. |
| 5 | 20A1 | Speaker amplifier. |
| 6 | 10A2 | Not used (spare). |
| 7 | 10A2 | Not used (spare). |
| 8 | – | Not used. |
| 9 | 10A2 | Rear seat entertainment module. Head up display. |
| 10 | 5A2 | Wireless accessory charger module. Hands free liftgate module. Power liftgate module. |
| 11 | 5A2 | Keypad. Combined sensor module. |
| 12 | 7.5A2 | Cluster. Electronic control panel. Smart datalink connector logic. |
| 13 | 7.5A2 | Gear shift module. Steering column control module. |
| 14 | 10A2 | Extended power module. Brake switch. |
| 15 | 10A2 | Smart datalink connector power. |
| 16 | 15A1 | Liftglass release. |
| 17 | 5A2 | Telematics control unit – modem. |
| 18 | 5A2 | Ignition switch. Key inhibit solenoid. Push button start switch. |
| 19 | 7.5A2 | Transmission control switch. Gearshift module. |
| 20 | 7.5A2 | Not used (spare). |
| 21 | 5A2 | Humidity and in-car temperature sensor. |
| 22 | 5A2 | Electrochromatic mirror. Second row heated seat module. |
| 23 | 10A1 | Moonroof logic. Inverter. Power window switch. Power mirror switch. |
| 24 | 20A1 | Central lock unlock |
| 25 | 30A1 | Left front door zone module. |
| 25 | 30A1 | Right front door zone module. |
| 27 | 30A1 | Moonroof. |
| 28 | 20A1 | Stereo amplifier. |
| 29 | 30A1 | Left rear door zone module. |
| 30 | 30A1 | Right rear door zone module. |
| 31 | 15A1 | Adjustable pedais. |
| 32 | 10A1 | SYNC Drive mode switch module. 4×4 switch. Radio frequency transceiver module. Rear heating, ventilation and air condi-tioning control module. |
| 33 | 20A1 | Audio control module. |
| 34 | 30A1 | Run/start relay. |
| 35 | 5A1 | Extended power mode module. |
| 36 | 15A1 | Image Processing module A. Automated park assist module. Continuous control damping module. |
| 37 | 20A1 | Heated steering wheel. |
| 38 | 30A Circuit Breaker | Left rear power window. Right rear power window. |
| 1 Micro 2 fuse. 2 Micro 3 fuse. Note: Spare fuse amperage may vary. | ||
Engine Compartment Fuse Box
List of fuses in the engine compartment fuse box (2019)
| № | A | Protected Component |
|---|---|---|
| 1 | 25A1 | Horn. |
| 2 | 50A2 | Fan 1. |
| 3 | 30A2 | Front wiper motor. |
| 4 | – | Not used. |
| 5 | 30A2 | Starter relay. |
| 6 | 20A2 | Power point 1. |
| 8 | 20A2 | Power point 2. |
| 10 | 5A1 | Rain sensor. |
| 12 | – | Not used. |
| 13 | 10A1 | 4×4 module. Heated backlite. Heated mirror relay coil. Heated wiper park relay coil. Transmission isolation relay coil. |
| 14 | 15A1 | Transmission control module. |
| 15 | 15A1 | Voltage quality module run/start power. Blindspot information system. Head Up Display. Image Processing module B. Front view camera. Rear view camera. Cruise control module. |
| 16 | 10A1 | Powertrain control module (PCM) run/ start feed. |
| 17 | 10A1 | Anti-lock brake system run / start feed. |
| 18 | 10A1 | Electronic power assist steering run / start feed. |
| 19 | – | Not used. |
| 20 | 40A2 | Front blower. |
| 21 | 40A2 | Passenger seat motors. |
| 22 | 20A1 | Not used. |
| 23 | 10A1 | Alternator A-line. |
| 24 | 30A2 | Trailer brake control module. |
| 25 | 50A2 | Body control module power 1. |
| 26 | 50A2 | Electronic fan 3. |
| 27 | 40A2 | Driver seat motors. |
| 28 | 15A1 | Rear heated seats. |
| 29 | 10A1 | Integrated wheel end solenoid. |
| 30 | 25A2 | Trailer tow class ll-IV battery charge. |
| 31 | 50A2 | Power folding seat module. |
| 32 | 10A1 | A/C clutch. |
| 33 | – | Not used. |
| 34 | – | Not used. |
| 35 | 20A1 | Vehicle power 4. |
| 35 | 10A1 | Vehicle power 3. |
| 37 | 25A1 | Vehicle power 2. |
| 38 | 25A1 | Vehicle power 1. |
| 39 | – | Not used. |
| 41 | 50A2 | Inverter. |
| 43 | 20A2 | Trailer Tow Light Module Class ll-IV. |
| 45 | 20A2 | Front/rear washer pump. |
| 46 | 7.5A1 | Family entertainment system. |
| 47 | – | Not used. |
| 48 | – | Not used. |
| 49 | – | Not used. |
| 50 | 30A2 | Fuel pump. |
| 51 | 20A2 | Power point 3. |
| 52 | 50A2 | Body control module (BCM) voltage quality module (VQM). |
| 53 | 25A2 | Trailer tow park lamps relay. |
| 54 | 40A2 | Electronic limited slip differential relay. |
| 55 | 40A2 | Auxiliary blower. |
| 56 | 20A2 | Power point 4. |
| 58 | 5A1 | Not used (spare). |
| 59 | – | Not used. |
| 60 | 5A1 | Not used (spare). |
| 61 | 25A1 | Not used (spare). |
| 62 | 25A1 | Not used (spare). |
| 63 | 25A1 | 4×4 module. |
| 64 | – | Not used. |
| 65 | – | Not used. |
| 66 | – | Not used. |
| 67 | – | Not used. |
| 69 | – | Not used. |
| 70 | 40A2 | Anti-lock brake system / parking brake module. |
| 71 | 25A2 | 4×4 module. |
| 72 | – | Not used. |
| 73 | – | Not used. |
| 74 | 10A1 | Trailer tow backup lamps. |
| 75 | – | Not used. |
| 76 | 50A2 | Body control module power 2. |
| 77 | 30A2 | Climate controlled (Heated/Vented) seat module. |
| 78 | – | Not used. |
| 79 | – | Not used. |
| 80 | 10A1 | Heated wiper park. |
| 81 | – | Not used. |
| 82 | – | Not used. |
| 83 | 15A1 | Transmission control module power. |
| 84 | – | Not used. |
| 85 | – | Not used. |
| 86 | 5A1 | USB smart charger 5. |
| 87 | 5A1 | USB smart charger 3. |
| 88 | 10A1 | Multi-contour seats relay. |
| 89 | 40A2 | Power running boards. |
| 91 | 30A2 | Power liftgate module. |
| 93 | 15A1 | Heated mirrors. |
| 94 | 5A1 | USB smart charger 1. |
| 95 | 10A1 | USB smart charger 2. |
| 96 | 30A2 | Rear wiper motor relay. |
| 97 | 40A2 | Intercooler puller relay fan. |
| 98 | 15A2 | Transmission oil pump. |
| 99 | 40A2 | Heated backlite. |
| 100 | 20A2 | Power point 5. |
| 101 | 25A2 | Fan 2. |
| 102 | – | Not used. |
| 103 | – | Not used. |
| 104 | – | Not used. |
| 105 | – | Not used. |
| Relays | ||
| R02 | Powertrain Control Module | |
| R05 | Electric fan 2. | |
| 1 Micro fuse. 2 M case use. Note: Spare fuse amperage may vary. | ||
2020
Passenger Compartment Fuse Box
List of fuses in the passenger compartment fuse box (2020)
| № | A | Protected Component |
|---|---|---|
| 1 | – | Not used. |
| 2 | 10A | Driver seat switch. |
| 3 | 7.5A | Driver door unlock. |
| 4 | 20A | Speaker amplifier. |
| 5 | – | Not used. |
| 6 | 10A | Smart datalink connector logic. |
| 7 | 10A | Rear audio control module. |
| 8 | 5A | Wireless accessory charger. Hands-free liftgate module. |
| 9 | 5A | Keypad. Combined sensor module. |
| 10 | – | Not used. |
| 11 | – | Not used. |
| 12 | 7.5A | Instrument cluster. |
| 13 | 7.5A | Steering column control module. Smart datalink connector logic. |
| 14 | 15A | Brake switch. |
| 15 | 15A | SYNC. |
| 16 | – | Not used. |
| 17 | – | Not used. |
| 18 | 7.5A | Key inhibit solenoid. Gearshift module. |
| 19 | 5A | Telematics control unit module. |
| 20 | 5A | Ignition switch. |
| 21 | 5A | Humidity and in-car temperature sensor. |
| 22 | 5A | Electrochromic mirror. Second row heated seat module. |
| 23 | 30A | Power window switch. Power mirror switch. Left-hand front door zone module. |
| 24 | 30A | Moonroof logic. |
| 25 | 20A | Speaker amplifier 2. |
| 26 | 30A | Right-hand front door zone module. |
| 27 | 30A | Left-hand rear door zone module. |
| 28 | 30A | Right-hand rear door zone module. |
| 29 | 15A | Adjustable pedais. |
| 30 | 5A | Trailer tow control module. |
| 31 | 10A | Rear climate control module. Drive mode switch module. Terrain management switch. Radio frequency transceiver module. 4×4 switch. |
| 32 | 20A | Audio control module. |
| 33 | – | Not used. |
| 34 | 30A | Run/start relay. |
| 35 | 5A | Not used (spare). |
| 36 | 15A | Image Processing module A. Automated park assist module. Continuous control damping module. |
| 37 | 20A | Heated steering wheel. |
| 38 | 30A Circuit Breaker | Left-hand rear power window. Right-hand rear power window. |
| Note: Spare fuse amperage may vary. | ||
Engine Compartment Fuse Box
List of fuses in the engine compartment fuse box (2020)
| № | A | Protected Component |
|---|---|---|
| 1 | 25A | Horn. |
| 2 | 50A | Fan 1. |
| 3 | 30A | Front wiper motor. |
| 4 | 50A | Inverter. |
| 5 | 30A | Starter relay. |
| 6 | 20A | Power point 1. |
| 8 | 20A | Power point 2. |
| 10 | 5A | Rain sensor. |
| 12 | 20A | Trailer tow light module. |
| 13 | 10A | 4×4 module. |
| Heated backlight relay coil. Heated mirror relay coil. Heated wiper park relay coil. Transmission isolation relay coil. | ||
| 14 | 15A | Not used (spare). |
| 15 | 15A | Voltage quality module run/start power. Blindspot information system. Image Processing module B. Front view camera. Rear view camera. Cruise control module. |
| 15 | 10A | Powertrain control module run/start feed. |
| 17 | 10A | Anti-lock brake system run/start feed. |
| 18 | 10A | Electronic power assist steering run/start feed. |
| 19 | – | Not used. |
| 20 | 40A | Front blower. |
| 21 | 40A | Passenger seat motors. |
| 22 | – | Not used. |
| 23 | 10A | Alternator A-line. |
| 24 | 30A | Trailer brake control module. |
| 25 | 50A | Body control module power 1. |
| 26 | 50A | Electronic fan 3. |
| 27 | 40A | Driver seat motors. |
| 28 | 15A | Rear heated seats. Rear seat climate control module. |
| 29 | 10A | Integrated wheel end solenoid. |
| 30 | 25A | Trailer tow class ll-IV battery charge. |
| 31 | 50A | Power folding seat module. |
| 32 | 10A | A/C clutch. |
| 33 | – | Not used. |
| 34 | – | Not used. |
| 35 | 20A | Vehicle power 4. |
| 36 | 10A | Vehicle power 3. |
| 37 | 25A | Vehicle power 2. |
| 38 | 25A | Vehicle power 1. |
| 39 | – | Not used. |
| 41 | – | Not used. |
| 43 | – | Not used. |
| 45 | 20A | Front and rear washer pump. |
| 46 | 7.5A | Family entertainment system. |
| 47 | – | Not used. |
| 48 | – | Not used. |
| 49 | – | Not used. |
| 50 | 30A | Fuel pump. |
| 51 | 20A | Power point 3. |
| 52 | 50A | Body control module voltage quality module. |
| 53 | 25A | Trailer tow park lamps relay. Trailer tow control module. |
| 54 | 40A | Electronic limited slip differential relay. |
| 55 | 40A | Auxiliary blower. |
| 56 | 20A | Power point 4. |
| 58 | 5A | Not used (spare). |
| 59 | – | Not used. |
| 60 | 5A | Not used (spare). |
| 61 | 25A | Not used (spare). |
| 62 | 25A | Not used (spare). |
| 63 | 25A | 4×4 module. |
| 64 | – | Not used. |
| 65 | – | Not used. |
| 66 | – | Not used. |
| 67 | – | Not used. |
| 69 | 30A | Power liftgate module. |
| 70 | 40A | Anti-lock brake system and parking brake module. |
| 71 | 25A | 4×4 module. |
| 72 | – | Not used. |
| 73 | – | Not used. |
| 74 | 10A | Trailer tow backup lamps. |
| 75 | – | Not used. |
| 76 | 50A | Body control module power 2. |
| 77 | 30A | Climate control seat module. |
| 78 | – | Not used. |
| 79 | – | Not used. |
| 80 | 10A | Heated wiper park. |
| 81 | – | Not used. |
| 82 | – | Not used. |
| 83 | 15A | Not used (spare). |
| 84 | – | Not used. |
| 85 | – | Not used. |
| 86 | 5A | USB smart charger 5. |
| 87 | 5A | USB smart charger 3. |
| 88 | 10A | Multi-contour seats relay. |
| 89 | 40A | Power running boards. |
| 91 | – | Not used. |
| 93 | 15A | Heated mirrors. |
| 94 | 5A | USB smart charger 1. |
| 95 | 10A | USB smart charger 2. |
| 96 | 30A | Rear wiper motor retay. |
| 97 | 40A | Not used (spare). |
| 98 | 15A | Transmission oil pump. |
| 99 | 40A | Heated backlight. |
| 100 | 20A | Power point 5. |
| 101 | 25A | Fan 2. |
| 102 | – | Not used. |
| 103 | – | Not used. |
| 104 | – | Not used. |
| 105 | – | Not used. |
| Relays | ||
| R02 | Powertrain control module. | |
| R05 | Electric fan 2. | |
| Note: Spare fuse amperage may vary. | ||
2021
Passenger Compartment Fuse Box
List of fuses in the passenger compartment fuse box (2021)
| № | A | Protected Component |
|---|---|---|
| 1 | – | Not used. |
| 2 | 10A | Driver seat switch. |
| 3 | 7.5A | Driver door unlock. |
| 4 | 20A | Speaker amplifier. |
| 5 | – | Not used. |
| 6 | 10A | Smart datalink connector logic. |
| 7 | 10A | Rear audio control module. |
| 8 | 5A | Wireless accessory charger. Hands-free liftgate module. |
| 9 | 5A | Keypad. Combined sensor module. |
| 10 | – | Not used. |
| 11 | – | Not used. |
| 12 | 7.5A | Instrument cluster. |
| 13 | 7.5A | Steering column control module. Smart datalink connector logic. Climate control module. Gear shift module. |
| 14 | 15A | Brake switch. |
| 15 | 15A | SYNC. |
| 16 | – | Not used. |
| 17 | – | Not used. |
| 18 | 7.5A | Gear shift module. Column shifter. |
| 19 | 5A | Telematics control unit module. |
| 20 | 5A | Ignition switch. |
| 21 | 5A | In-vehicle temperature and humidity sensor. |
| 22 | 5A | Electrochromic mirror. Second row heated seat module. |
| 23 | 30A | Power window switch. Power mirror switch. Left-hand front door zone module. |
| 24 | 30A | Moonroof logic. |
| 25 | 20A | Speaker amplifier 2. |
| 26 | 30A | Right-hand front door zone module. |
| 27 | 30A | Left-hand rear door zone module. |
| 28 | 30A | Right-hand rear door zone module. |
| 29 | 15A | Adjustable pedais. |
| 30 | 5A | Trailer tow control module. |
| 31 | 10A | Rear climate control module. Drive mode switch module. Terrain management switch. Radio frequency transceiver module. 4×4 switch. |
| 32 | 20A | Audio control module. |
| 33 | – | Not used. |
| 34 | 30A | Run/start relay. |
| 35 | 5A | Not used (spare). |
| 36 | 15A | Image Processing module A. Automated park assist module. Continuous control damping module. |
| 37 | 20A | Heated steering wheel. |
| 38 | 30A Circuit Breaker | Left-hand rear power window. Right-hand rear power window. |
| Note: Spare fuse amperage may vary. | ||
Engine Compartment Fuse Box
List of fuses in the engine compartment fuse box (2021)
| № | A | Protected Component |
|---|---|---|
| 1 | 25A | Horn. |
| 2 | 50A | Electric fan 1. |
| 3 | 30A | Front wiper motor. |
| 4 | 50A | Inverter. |
| 5 | 30A | Starter relay. |
| 6 | 20A | Power point #1. |
| 8 | 20A | Power point #2. |
| 10 | 5A | Rain sensor. |
| 12 | 20A | Trailer tow light module. |
| 13 | 10A | 4×4 module. Heated backlight relay coil. Heated mirror relay coil. Heated wiper park relay coil. Transmission isolation relay coil. |
| 14 | 15A | Not used (spare). |
| 15 | 15A | Voltage quality module run/start power. Blindspot information system. Image Processing module B. Front view camera. Rear view camera. Cruise control module. |
| 15 | 10A | Powertrain control module run/start feed. |
| 17 | 10A | Anti-lock brake system run/start feed. |
| 18 | 10A | Electronic power assist steering run/start feed. |
| 19 | – | Not used. |
| 20 | 40A | Front blower. |
| 21 | 40A | Passenger seat motors. |
| 22 | – | Not used. |
| 23 | 10A | Alternator A-line. |
| 24 | 30A | Trailer brake control module. |
| 25 | 50A | Body control module power 1. |
| 26 | 50A | Electric fan 3. |
| 27 | 40A | Driver seat motors. |
| 28 | 15A | Rear heated seats. Rear seat climate control module. |
| 29 | – | Not used. |
| 30 | 25A | Trailer tow class ll-IV battery charge. |
| 31 | 50A | Power folding seat module. |
| 32 | 10A | A/C clutch. |
| 33 | – | Not used. |
| 34 | – | Not used. |
| 35 | 20A | Vehicle power 4. |
| 36 | 10A | Vehicle power 3. |
| 37 | 25A | Vehicle power 2. |
| 38 | 25A | Vehicle power 1. |
| 39 | – | Not used. |
| 41 | – | Not used. |
| 43 | – | Not used. |
| 45 | 20A | Front and rear washer pump. |
| 46 | 7.5A | Family entertainment system. |
| 47 | – | Not used. |
| 48 | – | Not used. |
| 49 | – | Not used. |
| 50 | 30A | Fuel pump. |
| 51 | 20A | Power point #3. |
| 52 | 50A | Body control module voltage quality module. |
| 53 | 25A | Trailer tow park lamps relay. Trailer tow control module. |
| 54 | 40A | Electronic limited slip differential relay. |
| 55 | 40A | Auxiliary blower. |
| 56 | 20A | Power point #4. |
| 58 | 5A | Not used (spare). |
| 59 | – | Not used. |
| 60 | 5A | Not used (spare). |
| 61 | 25A | Not used (spare). |
| 62 | 25A | Not used (spare). |
| 63 | 25A | 4×4 module. |
| 64 | – | Not used. |
| 65 | – | Not used. |
| 66 | – | Not used. |
| 67 | – | Not used. |
| 69 | 30A | Power liftgate module. |
| 70 | 40A | Anti-lock brake system and parking brake module. |
| 71 | 25A | 4×4 module. |
| 72 | – | Not used. |
| 73 | – | Not used. |
| 74 | 10A | Trailer tow backup lamps. |
| 75 | – | Not used. |
| 76 | 50A | Body control module power 2. |
| 77 | 30A | Climate control seat module. |
| 78 | – | Not used. |
| 79 | – | Not used. |
| 80 | 10A | Heated wiper park. |
| 81 | – | Not used. |
| 82 | – | Not used. |
| 83 | 15A | Not used (spare). |
| 84 | – | Not used. |
| 85 | – | Not used. |
| 86 | 5A | USB smart charger #5. |
| 87 | 5A | USB smart charger #3. |
| 88 | 10A | Multi-contour seats relay. |
| 89 | 40A | Power running boards. |
| 91 | – | Not used. |
| 93 | 15A | Heated mirrors. |
| 94 | 5A | USB smart charger #1. |
| 95 | 10A | USB smart charger #2. |
| 96 | 30A | Rear wiper motor relay. |
| 97 | 40A | Not used (spare). |
| 98 | 15A | Transmission oil pump. |
| 99 | 40A | Heated backlight. |
| 100 | 20A | Power point #5. |
| 101 | 25A | Electric fan 2. |
| 102 | – | Not used. |
| 103 | – | Not used. |
| 104 | – | Not used. |
| 105 | – | Not used. |
| Relays | ||
| R02 | Powertrain control module | |
| R05 | Electric fan 2. | |
| Note: Spare fuse amperage may vary. | ||
Conclusion
Knowing the fuse box and relay locations in the Ford Expedition (2018-2021) is essential for easy troubleshooting and maintenance, ensuring dependable vehicle performance.
