Learn about Ford F-150 2018-2020 fuse box and relay’s locations, functions, and maintenance tips for optimal vehicle electrical system.

The Ford F-150 (2018-2020) is available in multiple body styles, including Regular Cab, SuperCab, and SuperCrew, catering to various driver needs, from work-focused tasks to family transport. Known for its rugged design, this truck offers advanced features like Ford’s SYNC infotainment system, Pro Trailer Backup Assist, and a variety of driver-assist options, including adaptive cruise control and lane-keeping assist.

The F-150’s electrical system is integral to these features, managed by the fuse box and relays. The fuse box is strategically located in the passenger compartment and engine bay, protecting circuits for crucial components like headlights, power windows, and infotainment. Relays, located near the fuse box, help control high-power systems such as the fuel pump, cooling fan, and ignition, ensuring smooth performance and preventing circuit overload. Regular inspection of the fuses and relays in these areas is vital to maintain the reliability of the F-150’s electrical functions.

MUST READ: DYI – How to Check Car Fuses?

(2018-2020) Ford F-150 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 F-150 2018-2020 fuse assignment

Ford F-150 Year of production: 2018, 2019, 2020

Location of Fuse Boxes

Ford F-150 (2018-2020): Passenger Compartment Fuse Panel Location

Passenger Compartment Fuse Panel:

The fuse panel is in the right-hand side of the passenger footwell behind a trim panel.
To remove the trim panel, pull it toward you and swing it away from the side. To reinstall it, line up the tabs with the grooves on the panel, and then push it shut.

To remove the fuse panel cover, press in the tabs on both sides of the cover, and then pull it off.
To reinstall the fuse panel cover, place the top part of the cover on the fuse panel and push the bottom part until it latches. Gently pull on the cover to make sure it has latched properly.

Ford F-150 (2018-2020): Power Distribution Box Location

Power Distribution 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.

Fuse Box Diagrams

2018

Passenger Compartment Fuses
Ford F-150 (2018): Passenger Compartment Fuse Panel Diagram

List of fuses in the Passenger Compartment Fuse Panel (2018)

№AProtected Components  
1–Not used.  
27.5AMemory module logic. Memory seat switches. Lumbar motor.  
320A  Driver door lock motor.  
45A  Trailer brake control.  
520A  Not used (spare).  
610A  Not used (spare).  
710A  Not used (spare).  
810A  Not used (spare).  
910A  Extended power module (Base only).  
105A  Embedded modem module.  
115A  Combined sensor module.  
127.5A  Climate head module. Smart datalink connector.  
137.5A  Cluster. Steering column control module.  
1410A  Brake on/off switch.  
1510A  Smart datalink connector.  
1615A  Tailgate release.  
175A  Heads up display. Terrain switch.  
185A  Ignition switch and passive-entry passive-start start stop switch. Key inhibit solenoid.  
197.5A  Extended power module (except Raptor).  
7.5A  Restraint control module (Raptor only).  
20–Not used.  
215A  Heads up display. In car temperature with humidity sensor.  
225A  Passenger occupant detection. (Raptor only)  
2310A  Power driven rear glass switch. Inverter. Driver side window. Moonroof. Vista roof.  
2420A  Central lock/unlock.  
2530A  Driver door control module.  
2630A  Passenger door control module.  
2730A  Vista roof. Moonroof.  
2820A  Not used (spare).  
2930A  Not used (spare).  
3030A  Not used (spare).  
3115A  Adjustable pedal switch and motor.  
3210A  Multi-function display. SYNC. Radio frequency receiver.  
3320A  Radio.  
3430A  Run-start relay.  
355A  Selectable drive mode switch. Upfitter switches (Raptor only).  
3615A  360 camera module. Heated steering wheel module. Rear-view mirror. Rear heated seats. Lane departure warning module. Automatic high beam module. Image processing module A.  
3720A  Not used (spare).  
3830A Circuit breakerRear window switches and motors.  
Under-Hood Compartment Fuses
Ford F-150 (2018): Power Distribution Box Diagram

List of fuses in the Power Distribution Box (2018)

№AProtected Components  
1  25AHorn.  
2  50AElectric fan 1.  
3  30AWindshield wiper motor.  
4  60ABody control module.  
5  30AStarter relay.  
6  20APower point 1.  
8  20APower point 2.  
10  5ARain sensor.  
12  15AUpfitter 1 relay (Raptor).  
13  10A4×4 run/start. Adaptive cruise control run/start module.  
14  15ANot used (spare).  
15  7.5AFront view camera. Voltage quality module.  
15ANot used (spare)(Raptor).  
16  10APowertrain control module. Transmission control module run/start.  
17  10AAnti-lock brakes run/start.  
18  10AElectric power steering run/start.  
19  5AUpfitter 5 relay (Raptor).  
20  40ABlower motor.  
21  30APassenger seat motors.  
22  20ARadio amplifier.  
23  10AAlt A sensor.  
24  30ATrailer brake control module.  
25  50ABody control module 1.  
26  50AElectric fan (Gas).  
27  30ADriver seat motors/memory module.  
28  15AHeated seat.  
29  10A4×4 solenoid.  
30  25ATrailer tow battery charge.  
31  –Not used.  
32  10AA/C clutch.  
33  –Not used.  
34  10AVehicle power 5 (Diesel).  
35  20AVehicle power 4 (Gas).  
15AVehicle power 4 (Diesel).  
36  10AVehicle power 3.  
37  25AVehicle power 2 (Gas).  
15AVehicle power 2 (Diesel).  
38  25AVehicle power 1 (Gas).  
20AVehicle power 1 (Diesel).  
39  –Not used.  
41  30ABody-control-module voltage-quality-module feed.  
43  20ATrailer tow lamps module.  
45  –Not used.  
46  10ASteering-column lock.  
47  50APowertrain control heater 3 (Diesel).  
48  30AFuel filter heater (Diesel).  
49  –Not used.  
50  30AFuel pump.  
51  20APower point 3.  
52  50APowertrain control heater 2 (Diesel).  
53  25ATrailer tow park lamps.  
54  –Not used.  
55  15AUpfitter 2 relay (Raptor).  
56  –Not used.  
58  5AUSB smart charger.  
59  –Not used.  
60  –Not used.  
61  15ANot used (spare).  
62  5AUpfitter 6 relay (Raptor).  
63  25A4×4.  
64  15AE-locker.  
65  –Not used.  
66  –Not used.  
67  –Not used.  
69  –Not used.  
70  40AAnti-lock brake system (ABS) valves. Electric parking brake.  
71  25A4×4.  
72  –Not used.  
73  –Not used.  
74  10ATrailer tow backup lamps.  
75  –Not used.  
76  40ABody control module 2.  
77  30AClimate controlled seat.  
78  10ASpot light module.  
79  –Not used.  
80  10AHeated windshield wiper.  
Upfitter 4 relay (Raptor).  
81  –Not used.  
82  30ATransmission fluid pump.  
5APowertrain control module (Diesel).  
83  15ATransmission control module.  
84  –Not used.  
85  –Not used.  
86  –Not used.  
87  –Not used.  
88  10AMulti-Contour Seats Relay.  
Upfitter 3 relay (Raptor).  
89  30APower running boards.  
91  –Not used.  
93  15AHeated mirrors.  
94  15ARear heated seat module (Raptor, Diesel).  
95  15ANot used (spare).  
96  –Not used.  
97  40AElectric fan (Raptor).  
50APowertrain control heater 1 (Diesel).  
98  15A10R transmission module r/s. 3.3L transmission fluid pump.  
99  40AHeated rear window.  
100  25ADiesel exhaust fluid (DEF) heater relay (Diesel).  
101  25AElectric fan (Base only).  
102  30APower sliding back window.  
103  20ATrailer tow stop-turn relay fuse.  
104  15ASnowplow switch. Rear heated seats (Base).  
105  10ATelescoping mirror.  
R02  –Powertrain control module relay.  
R05  –Electric fan relay.  

2019

Passenger Compartment Fuses
Ford F-150 (2019): Passenger Compartment Fuse Panel Diagram

List of fuses in the Passenger Compartment Fuse Panel (2019)

№AProtected Component  
1–Not used.  
27.5A  Memory module logic. Memory seat switches. Lumbar motor.  
320A  Driver door lock motor.  
45A  Trailer brake control.  
520A  Not used (spare).  
610A  Not used (spare).  
710A  Not used (spare).  
810A  Not used (spare).  
910A  Extended power module (base).  
105A  Embedded modem module.  
115A  Combined sensor module.  
127.5A  Climate head module. Smart datalink connector.  
137.5A  Cluster. Steering column control module.  
1410A  Brake on/off switch.  
1510A  Smart datalink connector.  
1615A  Tailgate release.  
175A  Heads up display. Terrain switch.  
185A  Ignition switch and passive-entry passive-start start stop switch. Key inhibit solenoid.  
197.5A  Extended power module (base).  
7.5A  Restraint control module (Raptor).  
207.5A  Not used (spare).  
215A  Heads up display. In car temperature with humidity sensor.  
225A  Passenger occupant detection (Raptor).  
2310A  Power driven rear glass switch. Inverter. Driver side window. Moonroof. Vista roof.  
2420A  Central lock/unlock.  
2530A  Driver door control module.  
2630A  Passenger door control module.  
2730A  Vista roof. Moonroof.  
2820A  Not used (spare).  
2930A  Not used (spare).  
3030A  Not used (spare).  
3115A  Adjustable pedal switch and motor.  
3210A  Multi-function display. SYNC. Radio frequency receiver.  
3320A  Radio.  
3430A  Run-start relay.  
355A  Selectable drive mode switch. Upfitter switches (Raptor).  
3615A  360 camera module. Heated steering wheel module. Rear-view mirror. Rear heated seats. Lane departure warning module. Automatic high beam module. Image processing module A.  
3720A  Not used (spare).  
3830A Circuit breakerRear window switches and motors.  
Under-Hood Compartment Fuses
Ford F-150 (2019): Power Distribution Box Diagram

List of fuses in the Power Distribution Box (2019)

№AProtected Component  
1  25AHorn.  
2  50AElectric fan 1.  
3  30AWindshield wiper motor.  
4  60ABody control module.  
5  30AStarter relay.  
6  20APower point 1.  
8  20APower point 2.  
10  5ARain sensor.  
12  15AUpfitter 1 relay (Raptor).  
13  10A4×4 run/start. Adaptive cruise control run/start module.  
14  –Not used (base).  
15ANot used (spare) (Raptor).  
15  7.5AFront view camera. Voltage quality module.  
15AVoltage quality module (Raptor).  
16  10APowertrain control module. Transmission control module run/start.  
17  10AAnti-lock brakes run/start.  
18  10AElectric power steering run/start.  
19  5AUpfitter 5 relay (Raptor).  
20  40ABlower motor.  
21  30APassenger seat motors.  
22  20ARadio amplifier.  
23  10AAlt A sensor.  
24  30ATrailer brake control module.  
25  50ABody control module 1.  
26  50AElectric fan (Gas).  
27  30ADriver seat motors/memory module.  
28  15AHeated seat.  
29  10A4×4 solenoid.  
30  25ATrailer tow battery charge.  
31  –Not used.  
32  10AA/C clutch.  
33  –Not used.  
34  10AVehicle power 5 (Diesel).  
35  20AVehicle power 4 (Gas).  
15AVehicle power 4 (Diesel).  
36  10AVehicle power 3.  
37  25AVehicle power 2 (Gas).  
15AVehicle power 2 (Diesel).  
38  25AVehicle power 1 (Gas).  
20AVehicle power 1 (Diesel).  
39  –Not used.  
41  30ABody control module voltage quality module feed.  
43  20ATrailer tow lamps module.  
45  –Not used.  
46  10ASteering column lock.  
47  50APowertrain control heater 3 (Diesel).  
48  30AFuel filter heater (Diesel).  
49  –Not used.  
50  30AFuel pump.  
51  20APower point 3.  
52  50APowertrain control heater 2 (Diesel).  
53  25ATrailer tow park lamps.  
54  –Not used.  
55  15AUpfitter 2 relay (Raptor).  
56  –Not used.  
58  5AUSB smart charger.  
59  –Not used.  
60  –Not used.  
61  –Not used (base).  
15ANot used (spare) (Raptor).  
62  5AUpfitter 6 relay (Raptor).  
63  25A4×4.  
64  15AE-locker.  
65  –Not used.  
66  –Not used.  
67  –Not used.  
69  –Not used.  
70  40AAnti-lock brake system (ABS) valves. Electric parking brake.  
71  25A4×4.  
72  –Not used.  
73  –Not used.  
74  10ATrailer tow backup lamps.  
75  –Not used.  
76  40ABody control module 2.  
77  30AClimate controlled seat.  
78  10ASpot light module.  
79  –Not used.  
80  10AHeated windshield wiper.  
Upfitter 4 relay (Raptor).  
81  –Not used.  
82  30ATransmission fluid pump.  
5APowertrain control module (Diesel).  
83  15ATransmission control module.  
84  –Not used.  
85  –Not used.  
86  –Not used.  
87  –Not used.  
88  10AMulti-contour seats relay.  
Upfitter 3 relay (Raptor).  
89  30APower running boards.  
91  –Not used.  
93  15AHeated mirrors.  
94  15ARear heated seat module (Raptor, Diesel).  
95  –Not used (base).  
15ANot used (spare) (Raptor).  
96  –Not used.  
97  40AElectric fan (Raptor).  
50APowertrain control heater 1 (Diesel).  
98  15A10R transmission module r/s. 3.3L transmission fluid pump.  
99  40AHeated rear window.  
100  25ADiesel exhaust fluid (DEF) heater relay (Diesel).  
101  25AElectric fan (base).  
102  30APower sliding back window.  
103  20ATrailer tow stop-turn relay fuse.  
104  15ASnowplow switch. Rear heated seats (base).  
105  10ATelescoping mirror.  
R02  –Powertrain control module relay.  
R05  –Electric fan relay.  

2020

Passenger Compartment Fuses
Ford F-150 (2020): Passenger Compartment Fuse Panel Diagram

List of fuses in the Passenger Compartment Fuse Panel (2020)

№AProtected Component  
1–Not used.  
27.5A  Memory module logic. Memory seat switches. Lumbar motor.  
320A  Driver door lock motor.  
45A  Trailer brake control.  
520A  Not used (spare).  
610A  Not used (spare).  
710A  Not used (spare).  
810A  Not used (spare).  
910A  Extended power module (base).  
105A  Embedded modem module.  
115A  Combined sensor module.  
127.5A  Climate head module. Smart datalink connector.  
137.5A  Cluster. Steering column control module.  
1410A  Brake on/off switch.  
1510A  Smart datalink connector.  
1615A  Tailgate release.  
175A  Heads up display. Terrain switch.  
185A  Ignition switch and passive-entry passive-start start stop switch. Key inhibit solenoid.  
197.5A  Extended power module (base).  
7.5A  Restraint control module (Raptor).  
207.5A  Not used (spare).  
215A  Heads up display. In car temperature with humidity sensor.  
225A  Passenger occupant detection (Raptor).  
2310A  Power driven rear glass switch. Inverter. Driver side window. Moonroof. Vista roof.  
2420A  Central lock/unlock.  
2530A  Driver door control module.  
2630A  Passenger door control module.  
2730A  Vista roof. Moonroof.  
2820A  Not used (spare).  
2930A  Not used (spare).  
3030A  Not used (spare).  
3115A  Adjustable pedal switch and motor.  
3210A  Multi-function display. SYNC. Radio frequency receiver.  
3320A  Radio.  
3430A  Run-start relay.  
355A  Selectable drive mode switch. Upfitter switches (Raptor).  
3615A  360 camera module. Heated steering wheel module. Rear-view mirror. Rear heated seats. Lane departure warning module. Automatic high beam module. Image processing module A.  
3720A  Not used (spare).  
3830A Circuit breakerRear window switches and motors.  
Under-Hood Compartment Fuses
Ford F-150 (2020): Power Distribution Box Diagram

List of fuses in the Power Distribution Box (2020)

№AProtected Component  
1  25AHorn.  
2  50AElectric fan 1.  
3  30AWindshield wiper motor.  
4  60ABody control module.  
5  30AStarter relay.  
6  20APower point 1.  
8  20APower point 2.  
10  5ARain sensor.  
12  15AUpfitter 1 relay (Raptor).  
13  10A4×4 run/start. Adaptive cruise control run/start module.  
14  –Not used (base).  
15ANot used (spare) (Raptor).  
15  7.5AFront view camera. Voltage quality module.  
15AVoltage quality module (Raptor).  
16  10APowertrain control module. Transmission control module run/start.  
17  10AAnti-lock brakes run/start.  
18  10AElectric power steering run/start.  
19  5AUpfitter 5 relay (Raptor).  
20  40ABlower motor.  
21  30APassenger seat motors.  
22  20ARadio amplifier.  
23  10AAlt A sensor.  
24  30ATrailer brake control module.  
25  50ABody control module 1.  
26  50AElectric fan (Gas).  
27  30ADriver seat motors/memory module.  
28  15AHeated seat.  
29  10A4×4 solenoid.  
30  25ATrailer tow battery charge.  
31  –Not used.  
32  10AA/C clutch.  
33  –Not used.  
34  10AVehicle power 5 (Diesel).  
35  20AVehicle power 4 (Gas).  
15AVehicle power 4 (Diesel).  
36  10AVehicle power 3.  
37  25AVehicle power 2 (Gas).  
15AVehicle power 2 (Diesel).  
38  25AVehicle power 1 (Gas).  
20AVehicle power 1 (Diesel).  
39  –Not used.  
41  30ABody control module voltage quality module feed.  
43  20ATrailer tow lamps module.  
45  –Not used.  
46  10ASteering column lock.  
47  50APowertrain control heater 3 (Diesel).  
48  30AFuel filter heater (Diesel).  
49  –Not used.  
50  30AFuel pump.  
51  20APower point 3.  
52  50APowertrain control heater 2 (Diesel).  
53  25ATrailer tow park lamps.  
54  –Not used.  
55  15AUpfitter 2 relay (Raptor).  
56  –Not used.  
58  5AUSB smart charger.  
59  –Not used.  
60  –Not used.  
61  –Not used (base).  
15ANot used (spare) (Raptor).  
62  5AUpfitter 6 relay (Raptor).  
63  25A4×4.  
64  15AE-locker.  
65  –Not used.  
66  –Not used.  
67  –Not used.  
69  –Not used.  
70  40AAnti-lock brake system (ABS) valves. Electric parking brake.  
71  25A4×4.  
72  –Not used.  
73  –Not used.  
74  10ATrailer tow backup lamps.  
75  –Not used.  
76  40ABody control module 2.  
77  30AClimate controlled seat.  
78  10ASpot light module.  
79  –Not used.  
80  10AHeated windshield wiper.  
Upfitter 4 relay (Raptor).  
81  –Not used.  
82  30ATransmission fluid pump.  
5APowertrain control module (Diesel).  
83  15ATransmission control module.  
84  –Not used.  
85  –Not used.  
86  –Not used.  
87  –Not used.  
88  10AMulti-contour seats relay.  
Upfitter 3 relay (Raptor).  
89  30APower running boards.  
91  –Not used.  
93  15AHeated mirrors.  
94  15ARear heated seat module (Raptor, Diesel).  
95  –Not used (base).  
15ANot used (spare) (Raptor).  
96  –Not used.  
97  40AElectric fan (Raptor).  
50APowertrain control heater 1 (Diesel).  
98  15A10R transmission module r/s. 3.3L transmission fluid pump.  
99  40AHeated rear window.  
100  25ADiesel exhaust fluid (DEF) heater relay (Diesel).  
101  25AElectric fan (base).  
102  30APower sliding back window.  
103  20ATrailer tow stop-turn relay fuse.  
104  15ASnowplow switch. Rear heated seats (base).  
105  10ATelescoping mirror.  
R02  –Powertrain control module relay.  
R05  –Electric fan relay.  

Conclusion

The Ford F-150 (2018-2020) blends durability and advanced features across its body styles. Ensuring the health of the fuse box and relays keeps these advanced electrical systems running smoothly, essential for both safety and performance.

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