Ford F-450 (2017 year). Manual - part 78

E145984

Protected components

Fuse amp rating

Fuse or relay number

Not used.

—

1

Memory seat switch (lumbar power).

7.5A

1

2

Driver door unlock relay.

20A

1

3

Aftermarket electronic brake controller.

5A

1

4

Rear heated seat module.

20A

1

5

Not used.

—

6

Not used.

—

7

Not used.

—

8

Not used.

—

9

Securicode™ keyless entry keypad.

5A

2

10

Rear climate control module.

5A

2

11

Front climate control module.

7.5A

2

12

Instrument cluster.

7.5A

2

13

Protected components

Fuse amp rating

Fuse or relay number

Smart data link.
Steering column control module.

Not used.

—

14

Smart datalink connector power.

10A

2

15

Heads up display.

Not used.

—

16

Electronic finish panel.

5A

2

17

Push button ignition switch.

5A

2

18

Ignition switch.
Key inhibit.

Transmission control switch (tow/haul).

7.5A

2

19

Not used.

—

20

Terrain management system.

5A

2

21

Head-up display.
Humidity sensor.

Occupant classification sensor.

5A

2

22

Accessory delay.

10A

1

23

Power windows.
Moonroof.
Power folding mirrors relay.
Inverter.
Window/moonroof switch illumination.

Central locking system relay.

20A

1

24

Left-hand front smart window motor.

30A

1

25

Door zone module.

Right-hand front smart window motor.

30A

1

26

Door zone module.

Moonroof.

30A

1

27

Sony amplifier - 10 channel.

20A

1

28

Sony amplifier - 14 channel.

30A

1

29

Not used.

—

30

Protected components

Fuse amp rating

Fuse or relay number

Not used.

—

31

SYNC.

10A

1

32

GPS module.
Display.
Radio frequency receiver.

Radio.

20A

1

33

Run-start relay.

30A

1

34

Restraints control module.

5A

1

35

Lane keeping system.

15A

1

36

Automatic high beam control.
Auto-dimming mirrors.
Rear heated seats.

Heated steering wheel.

20A

1

37

Left-hand front window motor.

30A 

3

38

Rear power window motors.

1

Micro fuse.

2

Dual micro fuse.

3

Circuit breaker.

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.

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.

FuseTypes

E207206

Fuse Type

Callout

Micro 2

A

Micro 3

B

Maxi

C

Mini

D

M Case

E

J Case

F

J Case Low Profile

G