These are some of the symbols you may see on your vehicle.
Vehicle Symbol Glossary
Safety Alert
See Owner’s Guide
Fasten Safety BeltAirbag - Front
Airbag - SideChild Seat Lower
Anchor
Child Seat Tether
AnchorBrake System
Anti-Lock Brake SystemParking Brake System
Brake Fluid -
Non-Petroleum BasedParking Aid System
Stability Control SystemSpeed Control
Master Lighting SwitchHazard Warning Flasher
Fog Lamps-FrontFuse Compartment
Fuel Pump ResetWindshield Wash/Wipe
Windshield
Defrost/DemistRear Window
Defrost/Demist
2008 F-250/350/450/550(f23)
Owners Guide (post-2002-fmt)
USA(fus)
Introduction
10
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Operating tips
•To reduce fog build up on the windshield during humid weather, place
the air flow selector in the
position.
•To reduce humidity build up inside the vehicle, do not drive with the
air flow selector in the O (OFF) position.
•Do not put objects under the front seats that will interfere with the
airflow to the rear seats.
•Remove any snow, ice or leaves from the air intake area at the base of
the windshield.
•To improve the A/C cool down, drive with the windows slightly open
for 2–3 minutes after start up or until the vehicle has been “aired out.”
For maximum cooling performance in MAX A/C mode:
1. Move the temperature control to the coolest setting.
2. Set the fan to the highest speed initially, then adjust in order to
maintain comfort.
To aid in side window defogging and demisting in cold weather:
1. Select
.
2. Select A/C.
3. Set the temperature control to maintain comfort.
4. Set the fan speed to highest setting.
5. Direct the outer instrument panel vents towards the side windows.
Do not place objects on top of the instrument panel as these
objects may become projectiles in a collision or sudden stop.
2008 F-250/350/450/550(f23)
Owners Guide (post-2002-fmt)
USA(fus)
Climate Controls
79
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Operating tips
•To reduce fog build up on the windshield during humid weather, place
the air flow selector in the
position.
•To reduce humidity build up inside the vehicle, do not drive with the
system OFF, or with recirculated air
engaged and A/C off.
•Do not put objects under the front seats that will interfere with the
airflow to the back seats.
•Remove any snow, ice or leaves from the air intake area at the base of
the windshield.
•To improve the A/C cool down, drive with the windows slightly open
for 2-3 minutes after start up or until the vehicle has been “aired out”.
For maximum cooling performance (MAX A/C):
Automatic operation:
1. Press AUTO for full automatic operation.
2. Do not override A/C or
(recirculated air).
3. Set the temperature to 60°F (16°C).
Override operation:
1. Select air distribution.
2. Select A/C and
(recirculated air). Use(recirculated air) with
A/C to provide colder airflow.
3. Set the temperature to 60°F (16°C).
4. Set highest fan speed initially, then adjust to maintain comfort.
In
(panel) or(panel/floor) modes:
1. Move temperature control to full cold.
2. Select A/C and
(recirculated air). Use recirculated air with A/C to
provide colder airflow.
3. Set highest fan speed initially, then adjust to maintain comfort.
2008 F-250/350/450/550(f23)
Owners Guide (post-2002-fmt)
USA(fus)
Climate Controls
83
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HEADLAMP CONTROL
Turns the lamps off.
Turns on the parking lamps,
instrument panel lamps, license
plate lamps and tail lamps.
Turns the headlamps on.
Autolamp control (if equipped)
The autolamp system provides light
sensitive automatic on-off control of
the exterior lights normally
controlled by the headlamp control.
The autolamp system also keeps the
lights on for approximately 20
seconds or on vehicles equipped
with a message center, you can
select a delay from 0–180 seconds,
after the ignition switch is turned to
OFF.
•To turn autolamps on, rotate the control counterclockwise.
•To turn autolamps off, rotate the control clockwise to
(OFF).
Foglamp control (if equipped)
The headlamp control also operates
the foglamps. The foglamps can be
turned on when the headlamp
control is in the
,or
positions and the high beams are
not turned on.
Pull headlamp control towards you
to turn foglamps on. The foglamp
indicator light (
) will illuminate.
2008 F-250/350/450/550(f23)
Owners Guide (post-2002-fmt)
USA(fus)
Lights
85
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Function Number
of bulbsTrade number
Foglamp 2 9145
License plate lamp 2 194
Cargo lamp 2 906
Mirror turn signal 2 2825
Mirror clearance lamp 2 2825
Front clearance lamps (2) and Front
identification lamps (3)5 194
Rear fender clearance* 4 W5W
Interior visor lamp (if equipped) 4 194
Rear identification 3 194
All replacement bulbs are clear in color except where noted.
To replace all instrument panel lights - see your authorized dealer
* Dual rear wheels, or if equipped.
Replacing headlamp bulbs (aerodynamic)
1. Make sure that the headlamp control is in the off position and open
the hood.
2. Remove the four bolts from the
top, side and bottom front of the
headlamp assembly.
3. Pull the assembly straight out
disengaging two snap clips to
fender.
4. Disconnect the electrical
connector by squeezing the release
tab and pushing the connector
forward and then pulling it
rearward.
2008 F-250/350/450/550(f23)
Owners Guide (post-2002-fmt)
USA(fus)
Lights
92
ProCarManuals.com
Front clearance and identification lamp bulbs
1. Make sure the headlamp switch is
in the off position.
2. Remove the screw and lens from
the lamp assembly.
3. Pull the bulb straight out of the
socket.
Install the bulb(s) in reverse order.
Replacing foglamp bulbs (if equipped)
1. Make sure the headlamp switch is
in the OFF position.
2. Remove the bulb socket from the
foglamp by turning
counterclockwise.
3. Disconnect the electrical
connector from the foglamp bulb.
Install the new bulb(s) in reverse order.
Replacing license plate lamp bulbs
The license plate bulbs are located
behind the rear bumper. To change
the license plate lamp bulbs:
1. Reach behind the rear bumper to
locate the bulb.
2. Twist the bulb socket
counterclockwise and carefully pull
to remove it from the lamp
assembly.
3. Pull out the old bulb from the
socket and push in the new bulb.
4. Install the bulb socket in lamp assembly by turning it clockwise.
2008 F-250/350/450/550(f23)
Owners Guide (post-2002-fmt)
USA(fus)
Lights
97
ProCarManuals.com
Fuse/Relay
LocationFuse Amp
RatingPassenger Compartment Fuse
Panel Description
11 10A Not used
12 7.5A Power mirror switch, Driver power
seat (Memory)
13 5A Not used (spare)
14 10A Upfitter relay #3 feed
15 10A Climate control head
16 15A Upfitter Relay #4 Feed
17 20A All lock motor feeds
18 20A Heated seat relay feed
19 25A Not used (spare)
20 15A Adjustable pedals, Datalink
21 15A Fog lamp relay feed, Cornering
lamps
22 15A Park lamp relay feed
23 15A High beam headlight relay feed
24 20A Horn relay feed
25 10A Power telescoping mirror switch
Demand lamps - underhood and
illuminated visor (battery saver)
26 10A Cluster
27 20A Ignition switch feed, Passenger
compartment fuses 28, 42, 43, 44,
and 45, Engine compartment starter
relay coil #57 (Diesel engine),
Accessory shutoff control module (if
equipped) (Diesel engine), Engine
compartment starter relay diode
(gasoline engines)
28 5A Radio
29 5A Not used (spare)
30 5A Not used (spare)
31 10A Compass
2008 F-250/350/450/550(f23)
Owners Guide (post-2002-fmt)
USA(fus)
Roadside Emergencies
301
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Family entertainment system ....48
Fluid capacities .........................383
Foglamps .....................................85
Four-Wheel Drive vehicles .......276
description ..............................281
driving off road .......................283
electronic shift ................277, 281
indicator light .........................278
lever operated shift ................278
manual locking hubs ..............277
preparing to drive your
vehicle .....................................264
Fuel ............................................362
calculating fuel
economy ..........................130, 367
cap ...........................................364
capacity ...................................383
choosing the right fuel ...........365
comparisons with EPA fuel
economy estimates .................370
detergent in fuel .....................366
filling your vehicle with
fuel ...........................362, 364, 367
filter, specifications ........362, 382
fuel pump shut-off switch .....296
improving fuel economy ........367
octane rating ...................366, 387
quality ......................................366
running out of fuel .................366
safety information relating to
automotive fuels .....................362
Fuel pump shut-off switch .......296
Fuses ..................................297–298
G
Gas cap (see Fuel cap) ............364
Gas mileage
(see Fuel economy) .................367
Gauges .........................................19transmission fluid
temperature gauge ...................23
H
Hazard flashers .........................296
Head restraints .........................162
Headlamps ...................................85
aiming ..................................87, 89
autolamp system .......................85
daytime running lights .............86
flash to pass ..............................86
high beam .................................86
replacing bulbs ...................93–94
turning on and off ....................85
Heating
heating and air conditioning
system ...........................76–77, 80
Homelink wireless control
system ........................................116
Hood ..........................................347
I
Ignition ...............................255, 387
Infant seats
(see Safety seats) .....................196
Inspection/maintenance (I/M)
testing ........................................372
Instrument panel
cleaning ...........................340–341
cluster ........................................12
lighting up panel and interior .87
J
Jump-starting your vehicle ......322
K
Keyless entry system ...............157
2008 F-250/350/450/550(f23)
Owners Guide (post-2002-fmt)
USA(fus)
Index
394
ProCarManuals.com