
Fuse/Relay
LocationFuse Amp
RatingPassenger Compartment Fuse
Panel Description
15 — Not used
16 — Not used
17 15A* Exterior lamps
18 20A* Flasher, Brake On-Off (BOO)
lamps
19 10A* Body Security Module (BSM)
(Security)
20 15A* Trailer tow Electric Brake
Controller (EBC)
21 20A* Heated seats
22 20A* Engine control
23 20A* Engine control (gasoline engine
only)/Climate control (Diesel
engine only)
24 15A* Tow haul, Blower relay, Electronic
Automatic Temperature Control
(EATC)
25 — Not used
26 10A* Airbags
27 15A* Ignition switch RUN feed
28 10A* Trailer tow EBC logic
29 10A* Customer access
30 15A* High beam headlamps
31 15A* Starter relay
32 5A* Radio (start)
33 15A* Cluster, 4x4, Wipers
34 10A* BOO switch (Low current)
35 10A* Instrument cluster
36 — Not used
37 15A* Horn
38 20A* Trailer tow park lamps
39 15A* Heated mirrors
2006 F-250/350/450/550(f23)
Owners Guide (post-2002-fmt)
USA(fus)
Roadside Emergencies
209

Fuse/Relay
LocationFuse Amp
RatingPassenger Compartment Fuse
Panel Description
40 20A* Fuel pump
41 10A* Instrument cluster
42 15A* Delayed accessory
43 10A* Fog lamps
44 — Not used
45 10A* Ignition switch RUN/START feed
46 10A* Left-hand low beam headlamp
47 10A* Right-hand low beam headlamp
48 — Not used
101 30A** Trailer tow EBC
102 30A** BSM (Door locks)
103 30A** Ignition switch
104 — Not used
105 — Not used
106 — Not used
107 20A** Trailer tow battery charge
108 30A** Upfitter #1
109 30A** Upfitter #2
110 30A** Ignition switch
111 — Not used
112 30A** Power seat (Driver)
113 30A** Starter
114 30A** Power seat (Passenger)
115 20A** Upfitter control
116 30A** Ignition switch
210 — Not used
211
1 2ISO relay Back-up lamps
212 — Not used
301 Full ISO relay Trailer tow battery charge
302 Full ISO relay Powertrain Control Module (PCM)
303 — Not used
2006 F-250/350/450/550(f23)
Owners Guide (post-2002-fmt)
USA(fus)
Roadside Emergencies
210

Many of the world’s automakers approved the World-wide Fuel Charter
that recommends gasoline specifications to provide improved
performance and emission control system protection for your vehicle.
Gasolines that meet the World-wide Fuel Charter should be used when
available. Ask your fuel supplier about gasolines that meet the
World-wide Fuel Charter.
Cleaner air
Ford endorses the use of reformulated “cleaner-burning” gasolines to
improve air quality.
Running out of fuel
Avoid running out of fuel because this situation may have an adverse
affect on powertrain components.
If you have run out of fuel:
•You may need to cycle the ignition from OFF to ON several times after
refueling, to allow the fuel system to pump the fuel from the tank to
the engine.
•TheService engine soonindicator (
) may come on. For more
information on theService engine soonindicator, refer to the
Instrument Clusterchapter.
ESSENTIALS OF GOOD FUEL ECONOMY
Measuring techniques
Your best source of information about actual fuel economy is you, the
driver. You must gather information as accurately and consistently as
possible. Fuel expense, frequency of fill-ups or fuel gauge readings are
NOT accurate as a measure of fuel economy. We do not recommend taking
fuel economy measurements during the first 1,000 miles (1,600 km) of
driving (engine break-in period). You will get a more accurate
measurement after 2,000 miles-3,000 miles (3,000 km–5,000 km).
Filling the tank
The advertised fuel capacity of the fuel tank on your vehicle is equal to
the rated refill capacity of the fuel tank as listed in theRefill capacities
section of this chapter.
2006 F-250/350/450/550(f23)
Owners Guide (post-2002-fmt)
USA(fus)
Maintenance and Specifications
271

The advertised capacity is the amount of the indicated capacity and the
empty reserve combined. Indicated capacity is the difference in the
amount of fuel in a full tank and a tank when the fuel gauge indicates
empty. Empty reserve is the small amount of fuel remaining in the fuel
tank after the fuel gauge indicates empty.
The amount of usable fuel in the empty reserve varies and should
not be relied upon to increase driving range. When refueling your
vehicle after the fuel gauge indicates empty, you might not be
able to refuel the full amount of the advertised capacity of the
fuel tank due to the empty reserve still present in the tank.
For consistent results when filling the fuel tank:
•Turn the engine/ignition off prior to refueling, an error in the reading
will result if the engine is left running.
•Use the same filling rate setting (low-medium-high) each time the
tank is filled.
•Allow no more than 2 automatic click-offs when filling.
•Always use fuel with the recommended octane rating.
•Use a known quality gasoline, preferably a national brand.
•Use the same side of the same pump and have the vehicle facing the
same direction each time you fill up.
•Have the vehicle loading and distribution the same every time.
Your results will be most accurate if your filling method is consistent.
Calculating fuel economy
1. Fill the fuel tank completely and record the initial odometer reading
(in miles or kilometers).
2. Each time you fill the tank, record the amount of fuel added (in
gallons or liters).
3. After at least three to five tank fill-ups, fill the fuel tank and record
the current odometer reading.
4. Subtract your initial odometer reading from the current odometer reading.
5. Follow one of the simple calculations in order to determine fuel economy:
Calculation 1:Divide total miles traveled by total gallons used.
Calculation 2:Multiply liters used by 100, then divide by total
kilometers traveled.
2006 F-250/350/450/550(f23)
Owners Guide (post-2002-fmt)
USA(fus)
Maintenance and Specifications
272

EMISSION CONTROL SYSTEM
Your vehicle is equipped with various emission control components and a
catalytic converter which will enable your vehicle to comply with applicable
exhaust emission standards. To make sure that the catalytic converter and
other emission control components continue to work properly:
•Use only the specified fuel listed.
•Avoid running out of fuel.
•Do not turn off the ignition while your vehicle is moving, especially at
high speeds.
•Have the items listed in yourscheduled maintenance information
performed according to the specified schedule.
The scheduled maintenance items listed in thescheduled maintenance
informationare essential to the life and performance of your vehicle
and to its emissions system.
If other than Ford, Motorcraft or Ford-authorized parts are used for
maintenance replacements or for service of components affecting
emission control, such non-Ford parts should be equivalent to genuine
Ford Motor Company parts in performance and durability.
Do not park, idle, or drive your vehicle in dry grass or other dry
ground cover. The emission system heats up the engine
compartment and exhaust system, which can start a fire.
Illumination of theService engine soonlight (
), charging system
warning light or the temperature warning light, fluid leaks, strange odors,
smoke or loss of engine power, could indicate that the emission control
system is not working properly.
Exhaust leaks may result in entry of harmful and potentially
lethal fumes into the passenger compartment.
Do not make any unauthorized changes to your vehicle or engine. By law,
vehicle owners and anyone who manufactures, repairs, services, sells,
leases, trades vehicles, or supervises a fleet of vehicles are not permitted to
intentionally remove an emission control device or prevent it from working.
Information about your vehicle’s emission system is on the Vehicle
Emission Control Information Decal located on or near the engine. This
decal identifies engine displacement and gives some tune up specifications.
Please consult yourWarranty Guidefor complete emission warranty
information.
2006 F-250/350/450/550(f23)
Owners Guide (post-2002-fmt)
USA(fus)
Maintenance and Specifications
275

ENGINE DATA
Engine 5.4L V8 engine 6.8L V10 engine
Cubic inches 330 415
Required fuel 87 octane 87 octane
Firing order 1-3-7-2-6-5-4-8 1-6-5-10-2-7-3-8-4-9
Spark plug gap1.02–1.28mm
(0.040–0.050 inch)*1.02–1.28mm
(0.040–0.050 inch)*
Ignition system Coil on plug Coil on plug
Compression ratio 9.8:1 9.2:1
*The 5.4L 3V and 6.8L 3V spark plug gap CANNOT be adjusted.
VEHICLE DIMENSIONS
F–250 Regular Cab and SuperCab
Dimension Body style
Regular
Cab 4x2 –
inches
(mm)Regular
Cab 4x4 –
inches
(mm)SuperCab
4x2 –
inches
(mm)SuperCab
4x4 –
inches
(mm)
(1) Overall
height76.5 (1943) 79.1 (2009) 76.8 (1951)
b79.4 (2017)b
(2) Track -
Front/Rear68.3
(1734)/67.2
(1706)68.3 (1736) /
67.2 (1706)68.3 (1734) /
67.2 (1706)68.3 (1736) /
67.2 (1706)
(3) Overall
width79.9 (2029) 79.9 (2029) 79.9 (2029) 79.9 (2029)
(4)
Wheelbase137.0
(3480)137.0 (3480) 141.8
(3602)
a
158.0
(4013)b
141.8
(3602)a
158.0
(4013)b
(5) Overall
length226.4
(5751)226.4 (5751) 231.2
(5872)a
247.4
(6284)b
231.2
(5872)a
247.4
(6284)b
a
Short BoxbLong Box
2006 F-250/350/450/550(f23)
Owners Guide (post-2002-fmt)
USA(fus)
Maintenance and Specifications
293

Exhaust fumes ..........................171
F
Fail safe cooling ........................265
Fluid capacities .........................287
Foglamps .....................................40
Four-Wheel Drive vehicles .......184
description ..............................189
driving off road .......................191
electronic shift ................185, 189
indicator light .........................186
lever operated shift ................186
manual locking hubs ..............185
preparing to drive your
vehicle .....................................175
Fuel ............................................266
calculating fuel
economy ............................72, 271
cap ...........................................269
capacity ...................................287
choosing the right fuel ...........270
comparisons with EPA fuel
economy estimates .................274
detergent in fuel .....................271
filling your vehicle with
fuel ...........................266, 269, 271
filter, specifications ........266, 286
fuel pump shut-off switch .....204
improving fuel economy ........271
octane rating ...................270, 293
quality ......................................270
running out of fuel .................271
safety information relating to
automotive fuels .....................266
Fuel pump shut-off switch .......204
Fuses ..................................205–206
G
Gas cap (see Fuel cap) ............269Gas mileage
(see Fuel economy) .................271
Gauges .........................................15
transmission fluid
temperature gauge ...................20
H
Hazard flashers .........................204
Head restraints ...........................90
Headlamps ...................................39
aiming ..................................41, 43
autolamp system .......................39
daytime running lights .............40
flash to pass ..............................41
high beam .................................41
replacing bulbs ...................47–50
turning on and off ....................39
Heating
heating and air conditioning
system ...........................33–34, 36
Hood ..........................................250
I
Ignition ...............................167, 293
Infant seats
(see Safety seats) .....................121
Inspection/maintenance (I/M)
testing ........................................276
Instrument panel
cleaning ...................................244
cluster ........................................12
lighting up panel and
interior .......................................41
J
Jump-starting your vehicle ......226
2006 F-250/350/450/550(f23)
Owners Guide (post-2002-fmt)
USA(fus)
Index
307

K
Keyless entry system .................86
Keys
positions of the ignition .........167
L
Lamps
autolamp system .......................39
daytime running light ...............40
fog lamps ...................................40
headlamps .................................39
headlamps, flash to pass ..........41
instrument panel, dimming .....41
interior lamps ...........................45
replacing bulbs ...................45–53
Lane change indicator
(see Turn signal) ........................44
Lights, warning and indicator ....12
anti-lock brakes (ABS) ..........173
speed control ............................63
Load limits .................................148
Loading instructions .................155
Locks
childproof ..................................81
Lubricant specifications ...........290
Lug nuts ....................................225
Lumbar support, seats ...............95
M
Manual transmission .................180
fluid capacities ........................287
reverse .....................................181
Message center .....................68–70
english/metric button ...............74
system check button ................73
warning messages .....................75Mirrors .........................................55
automatic dimming rearview
mirror ........................................58
fold away ...................................60
heated ........................................59
side view mirrors (power) .......58
signal .........................................59
Moon roof ....................................66
Motorcraft parts ................266, 286
O
Octane rating ............................270
Oil (see Engine oil) ..................254
Overdrive .....................................55
P
Parking brake ............................173
Parts (see Motorcraft parts) ....286
Pedals (see Power adjustable
foot pedals) .................................61
Power adjustable foot pedals .....61
Power distribution box
(see Fuses) ...............................211
Power door locks ........................80
Power mirrors .............................58
Power point .................................56
Power steering ..........................174
fluid, checking and adding ....277
fluid, refill capacity ................287
fluid, specifications .................290
Power Windows ...........................57
Preparing to drive your
vehicle ........................................175
R
Radio ..........................20, 22, 25, 28
2006 F-250/350/450/550(f23)
Owners Guide (post-2002-fmt)
USA(fus)
Index
308