Page 37 of 304

HEATER ONLY SYSTEM
(IF EQUIPPED)
1.Fan speed adjustment:Controls
the volume of air circulated in the
vehicle.
2.Temperature selection:
Controls the temperature of the
airflow in the vehicle.
3.Air flow selections:Controls the direction of the airflow in the
vehicle. See the following for a brief description on each control.
:Distributes outside air through the instrument panel vents.
OFF:Outside air is shut out and the fan will not operate.
:Distributes outside air through the instrument panel vents and the
floor vents.
:Distributes outside air through the floor vents.
:Distributes outside air through the windshield defroster vents and
floor vents.
:Distributes outside air through the windshield defroster vents.
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 during cold or warm
weather, do not drive with the air flow selector in the OFF position.
•Under normal weather conditions, do not leave the air flow selector in
OFF when the vehicle is parked. This allows the vehicle to“breathe”
using the outside air inlet vents.
•Do not put objects under the front seats that will interfere with the air
flow to the back seats.
•Remove any snow, ice or leaves from the air intake area at the base of
the windshield.
2004 F250/350/450/550(f23)
Owners Guide (post-2002-fmt)
USA English(fus)
Climate Controls
Climate Controls
37
Page 38 of 304

To aid in side window defogging/demisting in cold weather:
1. Select
2. Set the temperature control to full heat
3. Set the fan speed to HI
4. Direct the outer instrument panel vents towards the side windows
To increase airflow to the outer instrument panel vents, close the vents
located in the middle of the instrument panel.
Do not place objects on top of the instrument panel as these
objects may become projectiles in a collision or sudden stop.
MANUAL HEATING AND AIR
CONDITIONING SYSTEM
1.Fan speed adjustment:Controls
the volume of air circulated in the
vehicle.
2.Temperature selection:
Controls the temperature of the airflow in the vehicle.
3.Air flow selections:Controls the direction of the airflow in the
vehicle. See the following for a brief description on each control.
MAX A/C:Uses recirculated air to cool the vehicle. Air flows from the
instrument panel vents only.
A/C:Uses outside air to cool the vehicle. Air flows from the instrument
panel vents only.
:Distributes outside air through the instrument panel vents.
OFF:Outside air is shut out and the fan will not operate.
:Distributes outside air through the instrument panel vents and the
floor vents.
:Distributes outside air through the floor vents.
:Distributes outside air through the windshield defroster vents and
floor vents.
:Distributes outside air through the windshield defroster vents.
2004 F250/350/450/550(f23)
Owners Guide (post-2002-fmt)
USA English(fus)
Climate Controls
38
Page 39 of 304

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 OFF or MAX A/C position.
•Under normal weather conditions, do not leave the air flow selector in
MAX A/C or OFF when the vehicle is parked. This allows the vehicle
to“breathe”using the outside air inlet vents.
•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 aid in side window defogging/demisting in cold weather:
1. Select
2. Select A/C
3. Modulate the temperature control to maintain comfort.
4. Set the fan speed to HI
5. Direct the outer instrument panel vents towards the side windows
To increase airflow to the outer instrument panel vents, close the vents
located in the middle of the instrument panel.
Do not place objects on top of the instrument panel as these
objects may become projectiles in a collision or sudden stop.
2004 F250/350/450/550(f23)
Owners Guide (post-2002-fmt)
USA English(fus)
Climate Controls
39
Page 40 of 304

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 after the ignition switch is
turned to OFF.
To change the delay time of the
autolamp feature, do the following:
1. Start with the ignition in OFF and the autolamps selected.
2. Deselect the autolamps.
3. Put the ignition in RUN.
4. Put the ignition in OFF.
5. Select the autolamps. Steps 2 through 5 must be performed within a
10 second period. At this point, the headlamps and parking lamps will
turn on.
6. Deselect the autolamps after the desired autolamp delay time
(maximum of 3 minutes). At this point, the headlamps and parking
lamps will turn off.
2004 F250/350/450/550(f23)
Owners Guide (post-2002-fmt)
USA English(fus)
Lights
Lights
40
Page 42 of 304
High beams
Push the lever toward the
instrument panel to activate. Pull
the lever towards you to deactivate.
Flash to pass
Pull toward you slightly to activate
and release to deactivate.
PANEL DIMMER CONTROL
Use to adjust the brightness of the
instrument panel and all applicable
switches in the vehicle during
headlamp and parklamp operation.
Move the control to the full upright
position, past detent, to turn on the
interior lamps.
Move the control to the full down
position, past detent, to prevent the interior lights from illuminating
when the doors are opened.
2004 F250/350/450/550(f23)
Owners Guide (post-2002-fmt)
USA English(fus)
Lights
42
Page 43 of 304
AIMING THE HEADLAMPS
The headlamps on your vehicle are properly aimed at the assembly plant.
If your vehicle has been in an accident the alignment of your headlamps
should be checked by a qualified service technician.
TURN SIGNAL CONTROL
•Push down to activate the left
turn signal.
•Push up to activate the right turn
signal.
COURTESY/READING LAMPS (IF EQUIPPED)
The dome lamp lights when the
control is in the DOOR (left)
position, any door is open, the
instrument panel switch is pushed
past the detent and when any of the
remote entry controls are pressed
while the ignition is off.
The reading lamps can be turned on
by pressing the rocker controls next
to each lamp.
2004 F250/350/450/550(f23)
Owners Guide (post-2002-fmt)
USA English(fus)
Lights
43
Page 45 of 304

Function Number of
bulbsTrade number
Headlamps (aerodynamic) 2 9007
Headlamps (sealed beam) 2 H6054
Park/turn 2 3157 AK
Sidemarker 2 194
Tail/stop/turn/sidemarker 2 3157 K
Backup 2 3156K
High-mount stoplamp 1 922
Foglamp 2 9145
License plate lamp 2 194
Cargo lamp 2 906
Roofmarker 5 194
Rear fender clearance* 4
(a)
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 dealer
(a)Replace entire lamp assembly; bulb is not serviceable.
* 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. Disconnect the electrical connector from the bulb by pulling rearward.
3. Remove bulb retainer ring by
turning it counterclockwise, then
slide the ring off the plastic base
4. Pull bulb out of headlamp
assembly.
2004 F250/350/450/550(f23)
Owners Guide (post-2002-fmt)
USA English(fus)
Lights
45
Page 55 of 304

When closing the moon roof, you should verify that it is free of
obstructions and ensure that children and/or pets are not in the
proximity of the moon roof opening.
AUXILIARY POWER POINT
Power outlets are designed for
accessory plugs only. Do not
hang any type of accessory or
accessory bracket from the plug.
Improper use of the power
outlet can cause damage not
covered by your warranty.
The auxiliary power point is located
on the instrument panel.
Do not plug optional electrical accessories into the cigarette lighter. Use
the power point.
Do not use the power point for operating the cigarette lighter element.
The Maximum power each power point can supply depends on the fuse
rating. For example: a 20A fuse should supply a maximum of 240 Watts,
a 15A fuse should supply a maximum of 180 Watts and a 10A fuse should
supply a maximum of 120 Watts. Exceeding these limits will result in a
blown fuse.
Always keep the power point caps closed when not being used.
POWER WINDOWS (IF EQUIPPED)
When closing the power
windows, you should verify
they are free of obstructions and
ensure that children and/or pets
are not in the proximity of the
window openings.
Press and hold the bottom part of the rocker switch to open the window.
Press and hold the top part of the rocker switch to close the window.
POWER POINT
2004 F250/350/450/550(f23)
Owners Guide (post-2002-fmt)
USA English(fus)
Driver Controls
55