2008 FORD F350 fuse box

Power distribution box
The power distribution box is located in the engine compartment. The
power distribution box contains high-current fuses that protect your
vehicle’s main electrical systems from overloads.
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.
If the battery has been disconnected and reconnected, refer to the
Batterysection of theMaintenance and Specificationschapter.
The high-current fuses are coded as follows:
Fuse/Relay
LocationFuse Amp
RatingPower Distribution Box
Description
1 Relay Blower motor/Variable blower
control (Dual Zone Climate Control)
2 Relay Electronic Shift-on-the-Fly (ESOF)
Lo-Hi
3 Relay Heater mirror
4 — Not used
5 30A* Trailer Brake Controller (TBC)
2008 F-250/350/450/550(f23)
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Fuse/Relay
LocationFuse Amp
RatingPower Distribution Box
Description
6 40A* ABS module (Pump)
7 30A* Upfitter auxiliary switch #1
8 30A* Upfitter auxiliary switch #2
9 40A* ABS module (Coil)
10 20A* Cigar lighter
11 20A* Instrument panel power point
12 15A** Brake On/Off (BOO) relay feed
13 5A ** Brake switch, Brake switch relay
coil, SJB module, 4x4 module
14 — Not used
15 — Not used
16 Relay A/C clutch
17 Relay Not used
18 Relay Fuel Pump Driver Module (FPDM),
Fuel injectors (Gasoline engines),
Diesel Fuel Control Module (DFCM)
(Diesel engine)
19 Relay Back-up lamps, Reverse Sensing
System (RSS), Engine compartment
fuse 63
20 Relay Trailer stop/turn (Left)
21 Relay Trailer stop/turn (Right)
22 Relay Stop lamps, Center High-Mounted
Stop Lamp (CHMSL), TBC,
Customer access
23 15A** Heater mirror
24 40A* Blower motor relay
25 — Not used
26 30A* ESOF relay lo-hi
27 50A* Glow Plug Control Module (GPCM)
#1 (Diesel engine only)
28 20A* Heated mirror relay
2008 F-250/350/450/550(f23)
Owners Guide (post-2002-fmt)
USA(fus)
Roadside Emergencies
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Fuse/Relay
LocationFuse Amp
RatingPower Distribution Box
Description
29 30A* Passenger power seat
30 10A** A/C clutch relay
31 15A** Power fold mirror relay
32 20A** Fuel pump relay
33 20A** Back-up lamp relay
34 25A** Trailer stop/turn relay
35 5A** ESOF relay coils
36 10A**Gasoline engines:Powertrain
Control Module (PCM) keep alive
power, Canister vent
Diesel engine:Engine Control
Module (ECM) keep alive power
37 10A** Transmission Control Module (TCM)
(Diesel engine only)
38 — Not used
39 50A* ECM power (Diesel engine)
40 30A* Starter relay
41 20A* Power point (Center console -
Front)
42 30A* Trailer park lamp relay
43 20A* Power point (Center console - Rear)
44 30A* Trailer battery charge relay
45 30A* Driver power seat or Memory
module
46 40A* Run/Start relay
47 50A* GPCM #2 (Diesel engine only)
48 30A* ESOF relay hi-lo
49 30A* Wiper motor
50 30A* PCM relay coil, PCM relay (Gasoline
engines only)
51 — Not used
52 — Not used
2008 F-250/350/450/550(f23)
Owners Guide (post-2002-fmt)
USA(fus)
Roadside Emergencies
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Fuse/Relay
LocationFuse Amp
RatingPower Distribution Box
Description
53 Relay PCM power bus (Fuses 68, 70, 72,
74, 76) (Diesel engine only)
54 Relay Starter solenoid
55 Relay Trailer tow park lamps
56 Relay Trailer tow battery charge
57 Relay Power Distribution Box (PDB) bus
(fuses 67, 69, 71, 73, 75, 77)
SJB Run /Start bus (Fuses 29–37,
46)
58 Relay ESOF hi-lo
59 Relay PCM power bus (Fuses 68, 70, 72,
74, 76) (Gasoline engines only)
60 Diode Starter relay (Gasoline engines only)
61 Diode A/C clutch
62 Diode Fuel pump
63 15A** Trailer tow back-up lamps
64 5A** Mirror marker lamps
65 — Not used
66 — Not used
67 — Not used
68 — Not used
69 — Not used
70 10A**Gasoline engines:A/C clutch relay
coil, Refrigerant Containment
Switch, Heated PCV
Diesel engine:A/C clutch relay
coil, Clutch switch, Fuel pump
cooler, A/C cycle pressure switch
71 5A** Fuel pump relay diode, PCM/ECM
Run/Start power
72 15A**Gasoline engines:Ignition coils
Diesel engine:Engine TCM
2008 F-250/350/450/550(f23)
Owners Guide (post-2002-fmt)
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Fuse/Relay
LocationFuse Amp
RatingPower Distribution Box
Description
73 2A** Reverse Camera System (RCS)
74 20A**Gasoline engines:VPWR: HEGO,
CMS, MAFS, EVMV, CMCV, VCT,
IMTV
Diesel engine:VPWR: Engine loads
75 5A** Back-up relay coil power
76 20A**Gasoline engines:VPWR: PCM
Diesel engine:VPWR: ECM
77 10A** ABS module logic
* Cartridge fuses ** Mini fuses
CHANGING A FLAT TIRE
If you get a flat tire while driving:
•do not brake heavily.
•gradually decrease the vehicle’s speed.
•hold the steering wheel firmly.
•slowly move to a safe place on the side of the road.
Your vehicle may be equipped with a conventional spare tire that is
different in one or more of the following: type, brand, size, speed rating
and tread design. If this is the case, this dissimilar spare tire is still rated
for your vehicle loads (GAWR and GVWR).Temporary spare tires are not
equipped with Tire Pressure Monitor System (TPMS) sensors if the
system is present.
The use of tire sealant may damage your Tire Pressure
Monitoring System (if equipped) and should not be used.
If your vehicle is equipped with a Tire Pressure Monitoring
System, refer toTire Pressure Monitoring Systemin theTires,
Wheels and Loadingchapter for more information. If the tire pressure
monitor sensor becomes damaged, it will no longer function.
2008 F-250/350/450/550(f23)
Owners Guide (post-2002-fmt)
USA(fus)
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autolock ...................................147
programming entry code .......157
Keys ...........................................160
positions of the ignition .........255
L
Lamps
autolamp system .......................85
daytime running light ...............86
fog lamps ...................................85
headlamps .................................85
headlamps, flash to pass ..........86
instrument panel, dimming .....87
interior lamps ...........................91
replacing bulbs .............91, 93–97
Lane change indicator
(see Turn signal) ........................90
Lights, warning and indicator ....12
anti-lock brakes (ABS) ..........261
Load limits .................................236
Loading instructions .................242
Locks
autolock ...................................147
childproof ................................150
Lug nuts ....................................321
Lumbar support, seats .............167
M
Manual transmission .................269
fluid capacities ........................383
reverse .....................................271
Message center .................120, 129
english/metric button .............132
system check button ..............132
warning messages ...........124, 135
Mirrors ...............................100, 103
fold away .........................105, 107heated ......................................105
side view mirrors (power) .....104
signal .......................................108
Moon roof ..................................115
Motorcraft parts ................362, 382
N
Navigation system .......................47
O
Octane rating ............................366
Oil (see Engine oil) ..................351
Overdrive .....................................99
P
Parking brake ............................261
Parts (see Motorcraft parts) ....382
Pedals (see Power adjustable
foot pedals) ...............................108
Power adjustable foot pedals ...108
Power distribution box
(see Fuses) ...............................303
Power door locks ......................146
Power mirrors ...........................104
Power point ...............................100
Power steering ..........................263
fluid, checking and adding ....373
fluid, refill capacity ................383
Power Windows .........................102
Preparing to drive your
vehicle ........................................264
R
Radio ................................23, 25, 32
2008 F-250/350/450/550(f23)
Owners Guide (post-2002-fmt)
USA(fus)
Index
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