Page 47 of 304
Replacing front parking/turn signal bulbs
1. Make sure headlamp switch is in OFF position and open the hood.
2. Remove the two screws and
carefully disengage parking
lamp/turn signal assembly from the
vehicle.
3. Disconnect the electrical
connectors from the parking
lamp/side marker assembly and
remove.
4. Rotate bulb socket
counterclockwise and remove from
lamp assembly.
5. Carefully pull bulb straight out of
the socket and push in the new
bulb.
Install the new bulb(s) in reverse order.
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.
2004 F250/350/450/550(f23)
Owners Guide (post-2002-fmt)
USA English(fus)
Lights
47
Page 72 of 304
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.
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
72
Page 142 of 304

The RSS detects obstacles up to 2
meters (6 ft.) 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 25.0 cm (10
in.) away, the tone will sound
continuously. If the RSS detects a
stationary or receding object further
than 25.0 cm (10 in.) 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
will illuminate when the system is turned off. If the indicator light
illuminates when the RSS is not turned off, it may indicate a failure in
the RSS. The RSS will remain off until either the RSS control is pushed
again or the ignition switch is recycled.
Keep the RSS sensors (located on the rear bumper/fascia) free
from snow, ice and large accumulations of dirt (do not clean the
sensors with sharp objects). If the sensors are covered, it will
affect the accuracy of the RSS.
If your vehicle sustains damage to the rear bumper/fascia, leaving
it misaligned or bent, the sensing zone may be altered causing
inaccurate measurement of obstacles or false alarms.
2004 F250/350/450/550(f23)
Owners Guide (post-2002-fmt)
USA English(fus)
Driving
142
Page 303 of 304

Power door locks ..................73, 79
Power point .................................55
Power steering ..........................130
fluid, checking and adding ....256
fluid, refill capacity ................278
fluid, specifications .........281, 284
Power Windows ...........................55
Preparing to drive your
vehicle ........................................131
R
Radio ....................19, 21, 23, 26, 30
Relays ........................................193
Remote entry system .................75
illuminated entry ......................78
locking/unlocking doors ...........73
Reverse sensing system ...........141
Roadside assistance ..................191
S
Safety Belt Maintenance ..........103
Safety belts
(see Safety restraints) ...91–95, 97
Safety defects, reporting ..........224
Safety restraints ....................91–97
belt minder ...............................99
extension assembly ................103
for adults .............................92–95
for children .............................113
lap belt ......................................98
safety belt maintenance .........103
warning light and chime ..........99
Safety seats for children ..........116
Seat belts
(see Safety restraints) ...............91
Seats ............................................84child safety seats ....................116
cleaning ...................................229
Servicing your vehicle ..............232
Setting the clock
AM/FM stereo ...........................21
AM/FM/CD .................................26
AM/FM/Tape/CD .......................30
Premium In-dash Six CD .........33
Snowplowing .................8, 187–190
Spare tire
(see Changing the Tire) ...........199
Spark plugs,
specifications .....................277, 284
Special notice ................................9
ambulance conversions ..............8
diesel-powered vehicles .............7
four-wheel drive vehicles .......189
utility-type vehicles ....................7
Specification chart,
lubricants ...........................281, 284
Speed control ..............................59
Starting your
vehicle ........................124–125, 127
jump starting ..........................209
Steering wheel
tilting .........................................51
T
Tailgate ........................................72
Tilt steering wheel ......................51
Tires ...........................................264
changing ..................199, 201, 208
snow tires and chains ............276
tire grades ...............................265
treadwear ................................264
Towing .......................................162
trailer towing ..........................162
wrecker ....................................214
2004 F250/350/450/550(f23)
Owners Guide (post-2002-fmt)
USA English(fus)
Index
303