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2018 Ford F-350 Owners Manual - Fuses



Fuses

Always disconnect the battery before servicing high current fuses.

To reduce risk of electrical shock, always replace the cover to the power distribution box before

reconnecting the battery or refilling fluid reservoirs.

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 the battery has been disconnected and reconnected, some features will need to be reset. See Changing the 12V Battery (page 353).

E252492

317

Fuse or Relay Number

Fuse Rating

Protected Components

1

20A1

Powertrain control module.

2

20A1

Emissions - malfunction indicator lamp.

3

20A1

Cooling fan.

A/C compressor. Engine brake.

4

20A1

Noise suppression cap. Mass air flow sensor. Emissions.

Glow plugs. Urea.

5

15A1

Compressed natural gas fuel control module.

Fuel sensor.

6

Not used.

7

Not used.

8

Not used.

9

Not used.

10

15A1

Heated exterior mirrors.

11

Compressed natural gas relay.

12

40A2

Heated rear window.

13

Not used.

14

Powertrain control module relay.

15

20A1

Horn.

16

10A1

A/C clutch relay power.

17

Rear heated window and heated mirrors relay.

18

Trailer park lamp relay.

19

Not used.

318

Fuse or Relay Number

Fuse Rating

Protected Components

20

Supplemental air heater bank #1 relay.

21

Not used.

22

Not used.

23

Not used.

24

Cooling fan relay.

Supplemental air heater bank #3 relay.

25

Glow plug module power relay.

26

Not used.

27

30A2

Trailer tow battery charge relay (if equipped).

28

Not used.

29

Run-start relay.

30

10A1

4x4 module.

31

5A1

Adaptive cruise control. Run-start.

32

5A1

Anti-lock brake system module. Run-start.

33

10A1

Powertrain control module - ignition status power run.

Run-start.

Engine control module. Transmission control module.

34

10A1

Blind spot information system. Run-start.

Front camera. Rear camera.

35

Not used.

36

Blower motor relay.

37

Trailer tow battery charge relay (only on non-trailer brake controller vehicles).

38

A/C compressor clutch relay.

319

Fuse or Relay Number

Fuse Rating

Protected Components

39

Horn relay.

40

Supplemental air heater bank #2 relay.

41

25A2

Glow plugs.

42

40A2

Trailer tow lighting module (if equipped).

43

40A2

Front blower motor.

44

50A3

Voltage quality.

Body control module power.

45

60A3

Active front steering.

46

50A3

Supplemental air heater bank #2.

47

50A3

Cooling fan.

Supplemental air heater bank #3.

48

50A3

Body control module run power 1 bus.

49

60A3

Inverter.

50

50A3

Body control module run power 2 bus.

51

60A3

Body control module B+ feed.

52

60A3

Anti-lock brake system pump.

53

50A3

Supplemental air heater bank #1.

54

30A3

Trailer brake control module.

55

30A3

Climate controlled seat module.

56

40A3

Auxiliary lighting module.

57

30A2

Power running boards.

58

30A2

Compressed natural gas fuel control module relay.

320

Fuse or Relay Number

Fuse Rating

Protected Components

59

30A2

Anti-lock brake system valve.

60

Not used.

61

30A2

Driver power seat.

62

20A2

Auxiliary power point #1 (instrument panel).

63

30A2

Starter motor.

64

20A2

Auxiliary power point #2.

65

30A2

Trailer tow lighting module (if equipped).

66

20A2

Auxiliary power point #3 (center console).

67

30A2

Passenger power seat.

68

20A2

Auxiliary power point #4 (USB charger, rear center console).

69

25A2

4x4 module.

70

20A2

Auxiliary power point #5 (rear center console).

71

Not used.

72

30A2

Trailer tow left hand/right hand stop/turn (if equipped, not present with trailer brake controller).

73

Not used.

74

Not used.

75

30A2

Fuel pump.

76

Not used.

77

30A2

Wiper motor.

78

Not used.

321

Fuse or Relay Number

Fuse Rating

Protected Components

79

30A2

Power sliding rear window.

80

25A1

4x4 module.

81

10A1

4x4 solenoid.

82

10A1

Power telescoping mirrors.

83

20A1

Rear heated seats.

84

10A1

Trailer tow backup lamps (if equipped).

85

Not used.

86

Not used.

87

Not used.

88

10A1

Multi contour seats.

89

Not used.

90

10A1

Spot light module.

91

10A1

Upfitter interface module.

92

Not used.

93

Not used.

94

15A1

Transmission control module.

95

10A1

Powertrain control module keep alive power.

96

5A1

Rain sensor.

97

10A1

Run/Start control for Auxiliary power point #5

322

Fuse or Relay Number

Fuse Rating

Protected Components

98

10A 1

Alternator sense.

99

30A 1

Trailer tow parking lamps.

1 Micro fuse.

2 M case fuse.

3 J case fuse.

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.

Note: It may be easier to access the fuse panel if you remove the finish trim piece.

E145984

323

Fuse or Relay Number

Fuse Rating

Protected Components

1

Not used.

2

7.5A1

Memory seat switch (lumbar power).

3

20A1

Driver door unlock relay.

4

5A1

Aftermarket electronic brake controller. Trailer brake controller Brake On/Off. Customer access circuits.

5

Not used.

6

Not used.

7

Not used.

8

10A2

Driver window switch mirror fold.

9

10A2

Brake On/Off / Pressure Switch.

10

Not used.

11

5A2

Combined sense security module.

12

7.5A2

Front climate control module.

13

7.5A2

Instrument cluster. Smart data link.

Steering column control module.

14

10A2

Extended power restraints module.

15

10A2

Smart datalink connector power.

16

15A1

Tailgate release solenoid.

17

5A2

Head-up display.

18

5A2

Push button ignition switch. Ignition switch.

Key inhibit.

19

7.5A2

Transmission control switch (tow/haul). Select Shift switch.

324

Fuse or Relay Number

Fuse Rating

Protected Components

20

7.5A2

Active front steering module.

21

5A2

Head-up display. Humidity sensor.

22

5A2

Upfitter switch. Run/Start.

PTO relays.

23

10A1

Accessory delay. Power windows. Moonroof.

Power folding mirrors relay. Inverter.

Window/moonroof switch illumination.

24

20A1

Central locking system relay.

25

30A1

Left-hand front smart window motor. Door zone module.

26

30A1

Right-hand front smart window motor. Door zone module.

27

30A1

Moonroof.

28

20A1

Sony amplifier - 10 channel.

29

Not used.

30

Not used.

31

15A1

Adjustable pedals switch.

32

10A1

SYNC.

GPS module. Display.

Radio frequency receiver.

33

20A1

Radio.

34

30A1

Run-start relay.

35

5A1

Extended power restraints module.

325

Fuse or Relay Number

Fuse Rating

Protected Components

36

15A1

Lane keeping system. Automatic high beam control. Auto-dimming mirrors.

Rear heated seats. Camera module.

37

20A1

Heated steering wheel.

38

30A3

Rear power window switch.

1 Micro 2 fuse.

2 Micro 3 fuse.

3 Circuit breaker.

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.

E217331

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.

326

E207206

Callout

Fuse Type

A

Micro 2

B

Micro 3

C

Maxi

D

Mini

E

M Case

F

J Case

G

J Case Low Profile

327


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