Page 49 of 312
Replacing tail lamp/turn/backup lamp bulbs — F250/F350 only
1. Make sure the headlamp switch is
in the OFF position and then open
the tailgate to expose the lamp
assemblies.
2. Remove the two bolts from the
tail lamp assembly and carefully pull
the lamp assembly from the tailgate
pillar by releasing the two retaining
tabs.
3. Rotate the bulb socket counterclockwise and remove from lamp
assembly.
4. Pull the bulb straight out of the socket.
Install the new bulb(s) in reverse order.
Replacing brake/tail/backup lamp bulbs — F450/F550 only
1. Make sure the headlamp switch is
in the OFF position.
2. Remove the four screws and the
lamp lens from lamp assembly.
3. Carefully pull the bulb straight
out of the socket and push in the
new bulb.
2004 F250/350/450/550(f23)
Owners Guide (post-2002-fmt)
USA English(fus)
Lights
49
Page 73 of 312
2. Start the vehicle.
3. Press and hold both trip
computer controls. After
approximately eight seconds, the
trip computer will enter CAL mode.
CAL mode is indicated when the
display lights the“CAL”indicator.
4. Release both controls. The display
will return to normal, except that
the CAL indicator will remain lit until the compass is successfully
calibrated.
5. Slowly drive the vehicle in a circle (less than 5 km/h [3 mph]) until
the CAL indicator turns off. It may take up to five circles to complete
calibration.
6. The compass is now calibrated.
TAILGATE LOCK (IF EQUIPPED)
Your vehicle may be equipped with a
tailgate lock designed to prevent
theft of the tailgate.
•Insert ignition key and turn to the
right to engage lock.
•Turn ignition key to the left to
unlock.
2004 F250/350/450/550(f23)
Owners Guide (post-2002-fmt)
USA English(fus)
Driver Controls
73
Page 74 of 312
Tailgate removal
Your tailgate is removable to allow
more room for loading.
1. Lower the tailgate.
2. Use a screwdriver to pry the
spring clip (on each connector) past
the head of the support screw.
Disconnect cable.
3. Disconnect the other cable.
4. Lift tailgate to a 45 degree angle.
5. Lift right side off of its hinge.
6. Lift left side off of its hinge.
To install, follow the removal procedures in reverse order.
2004 F250/350/450/550(f23)
Owners Guide (post-2002-fmt)
USA English(fus)
Driver Controls
74
Page 143 of 312

This system is not designed to prevent contact with small or
moving objects. The system is designed to provide a warning to
assist the driver in detecting large stationary objects to avoid damaging
the vehicle. The system may not detect smaller objects, particularly
those close to the ground.
Certain add-on devices such as large trailer hitches, bike or
surfboard racks and any device that may block the normal
detection zone of the RSS system may create false beeps.
The RSS detects obstacles up to
6 feet (2 meters.) from the rear
bumper with a decreased coverage
area at the outer corners of the
bumper, (refer to the figures for
approximate zone coverage areas).
As you move closer to the obstacle,
the rate of the tone increases. When
the obstacle is less than 10 inches
(25.0 cm) away, the tone will sound
continuously. If the RSS detects a
stationary or receding object further
than 10 inches (25.0 cm) from the
side of the vehicle, the tone will
sound for only three seconds. Once
the system detects an object
approaching, the tone will sound
again.
The RSS may have reduced
performance or an increased chance
of false detection if the tailgate is
not locked and in the upright position. If the tailgate is down, the RSS
tone may be heard intermittently or continuously. The tone may also be
heard if items in the truck bed protrude rearward outside the bed.
The RSS automatically turns on
when the gearshift lever is placed in
R (Reverse) and the ignition is ON.
An RSS control allows the driver to
turn the RSS on and off. To turn the RSS off, the ignition must be ON,
and the gear selector in R (Reverse). An indicator light on the control
2004 F250/350/450/550(f23)
Owners Guide (post-2002-fmt)
USA English(fus)
Driving
143
Page 309 of 312

Power distribution box
(see Fuses) ...............................195
Power door locks ..................75, 81
Power point .................................57
Power steering ..........................132
fluid, checking and adding ....260
fluid, refill capacity ................284
fluid, specifications .........287, 291
Power Windows ...........................57
Preparing to drive your
vehicle ........................................132
R
Radio ....................20, 22, 25, 28, 32
Relays ........................................194
Remote entry system .................77
illuminated entry ......................80
locking/unlocking doors ...........75
Reverse sensing system ...........142
Roadside assistance ..................192
S
Safety Belt Maintenance ..........105
Safety belts
(see Safety restraints) ...92–96, 98
Safety defects, reporting ..........228
Safety restraints ....................92–98
belt minder .............................101
extension assembly ................104
for adults .............................93–96
for children .............................114
lap belt ......................................99
safety belt maintenance .........105
warning light and
chime ...............................100–101
Safety seats for children ..........117Seat belts
(see Safety restraints) ...............92
Seats ............................................85
child safety seats ....................117
cleaning ...................................233
Servicing your vehicle ..............236
Setting the clock
AM/FM stereo ...........................21
AM/FM/CD .................................25
AM/FM/In-dash 6 CD ................34
AM/FM/Tape ..............................22
AM/FM/Tape/CD .......................30
Snowplowing .........8, 188–189, 191
Spark plugs,
specifications .....................283, 291
Special notice ................................9
ambulance conversions ..............8
diesel-powered vehicles .............8
four-wheel drive vehicles .......190
utility-type vehicles ....................8
Specification chart,
lubricants ...........................287, 291
Speed control ..............................61
Starting your
vehicle ........................125–126, 128
jump starting ..........................212
Steering wheel
tilting .........................................53
T
Tailgate ..................................73–74
Tilt steering wheel ......................53
Tires ...................................268–269
alignment ................................277
care ..........................................275
changing ..................................203
checking the pressure ............275
2004 F250/350/450/550(f23)
Owners Guide (post-2002-fmt)
USA English(fus)
Index
309