2008 FORD SUPER DUTY trailer

Fuse/Relay
LocationFuse Amp
RatingPower Distribution Box Description
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
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
2008 F-250/350/450/550(f23)
Owners Guide (post-2002-fmt)
USA(fus)
Roadside Emergencies
275

Fuse/Relay
LocationFuse Amp
RatingPower Distribution Box Description
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
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
2008 F-250/350/450/550(f23)
Owners Guide (post-2002-fmt)
USA(fus)
Roadside Emergencies
276

•Winter weather driving capability
•Wet weather driving capability
It is not recommended that the vehicle be operated in 4WD modes with
a temporary emergency spare tire. If 4WD operation is necessary, do not
operate above speeds of 10 mph (16 km/h) or for distances above
50 miles (80 km).
3.Full-size dissimilar spare without label on wheel
When driving with the full-size dissimilar spare tire/wheel,do not:
•Exceed 70 mph (113 km/h)
•Use more than one dissimilar spare tire/wheel at a time
•Use commercial car washing equipment
•Use snow chains on the end of the vehicle with the dissimilar spare
tire/wheel
The usage of a full-size dissimilar spare tire/wheel can lead to
impairment of the following:
•Handling, stability and braking performance
•Comfort and noise
•Ground clearance and parking at curbs
•Winter weather driving capability
•Wet weather driving capability
•All-Wheel driving capability (if applicable)
•Load leveling adjustment (if applicable)
When driving with the full-size dissimilar spare tire/wheel additional
caution should be given to:
•Towing a trailer
•Driving vehicles equipped with a camper body
•Driving vehicles with a load on the cargo rack
Drive cautiously when using a full-size dissimilar spare tire/wheel and
seek service as soon as possible.
Stopping and securing the vehicle
To help prevent the vehicle from moving when you change a tire,
be sure the parking brake is set, then block (in both directions)
the wheel that is diagonally opposite to the tire being changed.
2008 F-250/350/450/550(f23)
Owners Guide (post-2002-fmt)
USA(fus)
Roadside Emergencies
279

•Idling for long periods of time (greater than one minute) may waste
fuel.
•Anticipate stopping; slowing down may eliminate the need to stop.
•Sudden or hard accelerations may reduce fuel economy.
•Slow down gradually.
•Driving at reasonable speeds (traveling at 55 mph [88 km/h] uses 15%
less fuel than traveling at 65 mph [105 km/h]).
•Revving the engine before turning it off may reduce fuel economy.
•Using the air conditioner or defroster may reduce fuel economy.
•You may want to turn off the speed control in hilly terrain if
unnecessary shifting between third and fourth gear occurs.
Unnecessary shifting of this type could result in reduced fuel
economy.
•Warming up a vehicle on cold mornings is not required and may
reduce fuel economy.
•Resting your foot on the brake pedal while driving may reduce fuel
economy.
•Combine errands and minimize stop-and-go driving.
Maintenance
•Keep tires properly inflated and use only recommended size.
•Operating a vehicle with the wheels out of alignment will reduce fuel
economy.
•Use recommended engine oil. Refer toMaintenance Product
Specifications and Capacitiesin this chapter.
•Perform all regularly scheduled maintenance items. Follow the
recommended maintenance schedule and owner maintenance checks
found in your vehicle’sscheduled maintenance information.
Conditions
•Heavily loading a vehicle or towing a trailer may reduce fuel economy
at any speed.
•Carrying unnecessary weight may reduce fuel economy (approximately
1 mpg [0.4 km/L] is lost for every 400 lb [180 kg] of weight carried).
•Adding certain accessories to your vehicle (for example bug
deflectors, rollbars/light bars, running boards, ski/luggage racks) may
reduce fuel economy.
2008 F-250/350/450/550(f23)
Owners Guide (post-2002-fmt)
USA(fus)
Maintenance and Specifications
337

Carefully read cautionary information on product label. For
MEDICAL EMERGENCY INFORMATION, contact a physician or
Poison Control Center immediately; on Ford-Motorcraft products call:
1-800-959-3673 (FORD). Failure to follow these instructions may result
in personal injury.
During normal operation, the fluid level in the clutch reservoir should
remain constant or rise slightly. If the fluid level drops, refill the fluid
level to the step in the reservoir.
1. Clean the reservoir cap before
removal to prevent dirt and water
from entering the reservoir.
2. Remove cap and rubber
diaphragm from reservoir.
3. Add fluid until the level reaches
the step in the reservoir.
4. Reinstall rubber diaphragm and
cap onto reservoir.
TRANSMISSION FLUID
Checking automatic transmission fluid (if equipped)
Refer to yourscheduled maintenance informationfor scheduled
intervals for fluid checks and changes. Your transmission does not
consume fluid. However, the fluid level should be checked if the
transmission is not working properly, i.e., if the transmission slips or
shifts slowly or if you notice some sign of fluid leakage.
Automatic transmission fluid expands when warmed. To obtain an
accurate fluid check, drive the vehicle until it is at normal operating
temperature (approximately 20 miles [30 km]). If your vehicle has been
operated for an extended period at high speeds, in city traffic during hot
weather or pulling a trailer, the vehicle should be turned off for about 30
minutes to allow fluid to cool before checking.
1. Drive the vehicle 20 miles (30 km) or until it reaches normal operating
temperature.
2. Park the vehicle on a level surface and engage the parking brake.
3. With the parking brake engaged and your foot on the brake pedal,
start the engine and move the gearshift lever through all of the gear
ranges. Allow sufficient time for each gear to engage.
2008 F-250/350/450/550(f23)
Owners Guide (post-2002-fmt)
USA(fus)
Maintenance and Specifications
343

Cargo organization and management
Towing mirrors
Trailer hitches, wiring harnesses and accessories
Peace of mind
Mobile-easehands-free communication system
Remote start
Vehicle security systems
Wheel locks
Not all accessories are available for all models.
For maximum vehicle performance, keep the following information in
mind when adding accessories or equipment to your vehicle:
•When adding accessories, equipment, passengers and luggage to your
vehicle, do not exceed the total weight capacity of the vehicle or of
the front or rear axle (GVWR or GAWR as indicated on the Safety
Compliance Certification Label). Consult your authorized dealer for
specific weight information.
•The Federal Communications Commission (FCC) and Canadian Radio
Telecommunications Commission (CRTC) regulate the use of mobile
communications systems — such as two-way radios, telephones and
theft alarms - that are equipped with radio transmitters. Any such
equipment installed in your vehicle should comply with FCC or CRTC
regulations and should be installed only by your authorized dealer.
•Mobile communications systems may harm the operation of your
vehicle, particularly if they are not properly designed for automotive
use.
•To avoid interference with other vehicle functions, such as anti-lock
braking systems, amateur radio users who install radios and antennas
onto their vehicle should not locate the Amateur Radio Antennas in
the area of the driver’s side hood.
•Electrical or electronic accessories or components that are added to
the vehicle by the authorized dealer or the owner may adversely affect
battery performance and durability.
2008 F-250/350/450/550(f23)
Owners Guide (post-2002-fmt)
USA(fus)
Accessories
360

A
Accessory delay ..........................99
Air cleaner filter ...............348–350
Air conditioning ..........................75
Airbag supplemental restraint
system ................................171–172
and child safety seats ............173
description ..............................172
disposal ....................................175
driver airbag ............................174
indicator light .........................175
operation .................................174
passenger airbag .....................174
passenger deactivation
switch ......................................176
Ambulance packages ....................8
Antifreeze
(see Engine coolant) ................324
Anti-lock brake system
(see Brakes) ..............................235
Anti-theft system ......................148
arming the system ..................149
Audio system
(see Radio) ......................22, 24, 30
Automatic transmission ............240
driving an automatic
overdrive .................................241
fluid, adding ............................343
fluid, checking ........................343
fluid, refill capacities ..............352
Auxiliary Input Jack ...................36
Auxiliary power point .................96
Axle
refill capacities ........................352
traction lok ..............................239
B
Battery .......................................322acid, treating emergencies .....322
jumping a disabled battery ....290
maintenance-free ....................322
replacement, specifications ...350
servicing ..................................322
Belt-Minder
.............................167
Brakes ........................................235
anti-lock ...................................235
anti-lock brake system (ABS)
warning light ...........................235
fluid, checking and adding ....342
fluid, refill capacities ..............352
parking ....................................236
shift interlock ..........................240
trailer .......................................223
Break-in period .............................5
Bulbs ............................................85
C
Capacities for refilling fluids ....352
Cassette tape player ...................22
Cell phone use ..............................7
Child safety restraints ..............181
child safety belts ....................181
Child safety seats ......................184
attaching with tether straps ..188
in front seat ............................185
in rear seat ..............................185
Cleaning your vehicle
engine compartment ..............307
instrument panel ....................309
interior .....................................310
plastic parts ............................309
safety belts ..............................310
washing ....................................306
waxing .....................................306
wheels ......................................307
wiper blades ............................309
2008 F-250/350/450/550(f23)
Owners Guide (post-2002-fmt)
USA(fus)
Index
361

label .........................................211
replacing ..................................202
rotating ....................................204
safety practices .......................203
sidewall information ...............206
snow tires and chains ............211
spare tire .................................278
terminology .............................195
tire grades ...............................195
treadwear ........................194, 201
Towing .......................................219
Trailer Brake
Controller-Integrated ..............223
trailer towing ..........................219
wrecker ....................................296
Traction control ........................237
Traction-lok rear axle ...............239
Trailer Brake
Controller-Integrated ................223
Transfer case
fluid checking .........................348
Transmission
automatic operation .........95, 240
brake-shift interlock (BSI) ....240
fluid, checking and adding
(automatic) .............................343
fluid, checking and adding
(manual) .................................347fluid, refill capacities ..............352
manual operation ....................244
Turn signal ..................................85
U
Upfitter controls .......................109
V
Vehicle Identification Number
(VIN) ..........................................357
Vehicle loading ..........................212
Ventilating your vehicle ...........234
W
Warning lights (see Lights) .......12
Washer fluid ..............................318
Water, Driving through .............262
Windows
power .........................................98
Windshield washer fluid and
wipers ..........................................94
checking and adding fluid .....318
replacing wiper blades ...........318
Wrecker towing .........................296
2008 F-250/350/450/550(f23)
Owners Guide (post-2002-fmt)
USA(fus)
Index
366