
•the ignition is in the 3 (ON) position,
•you shift into any gear putting the vehicle in motion, and
•the vehicle attains a speed greater than 12 mph (20 km/h) for greater
than 2 seconds.
The autolock feature repeats when:
•any door is opened then closed while the ignition is in the 3 (ON)
position and the vehicle speed is 9 mph (15 km/h) or lower, and
•the vehicle then attains a speed greater than 12 mph (20 km/h) for
greater than 2 seconds.
Deactivating/activating autolock feature
There are four methods to enable/disable this feature:
•Through your authorized dealer,
•by using a power door unlock/lock procedure,
•using a keypad procedure (if equipped), or
•or by using the instrument cluster message center (if equipped). Refer
toOptional message centerin theDriver controlschapter.
Note:The autolock feature can be activated/deactivated independently
of the autounlock feature.
Power door lock switch autolock enable/disable procedure
Before starting, ensure the ignition is in the 1 (OFF/LOCK) position and
all vehicle doors are closed. You must complete Steps 1–5 within 30
seconds or the procedure will have to be repeated. If the procedure
needs to be repeated, wait a minimum of 30 seconds before beginning
again.
1. Place the key in the ignition and
turn the ignition to the 3 (ON)
position.
2. Press the power door unlock
control on the door panel three
times.
3. Turn the ignition from the 3 (ON)
position to the 1 (OFF/LOCK)
position.
4. Press the power door unlock control on the door panel three times.
5. Turn the ignition back to the 3 (ON) position. The horn will chirp one
time to confirm programming mode has been entered and is active.
2008 F-250/350/450/550(f23)
Owners Guide (post-2002-fmt)
USA(fus)
Locks and Security
137

Note:The autounlock feature can be activated/deactivated
independently of the autolock feature.
Power door lock switch autounlock enable/disable procedure
Before starting, ensure the ignition is in the 1 (OFF/LOCK) position and
all vehicle doors are closed. You must complete Steps 1–5 within 30
seconds or the procedure will have to be repeated. If the procedure
needs to be repeated, wait a minimum of 30 seconds before beginning
again.
1. Place the key in the ignition and
turn the ignition to the 3 (ON)
position.
2. Press the power door unlock
control on the door panel three
times.
3. Turn the ignition from the 3 (ON)
position to the 1 (OFF/LOCK)
position.
4. Press the power door unlock control on the door panel three times.
5. Turn the ignition back to the 3 (ON) position. The horn will chirp one
time to confirm programming mode has been entered and is active.
6. To enable/disable the autounlock feature, press the lock control, then
press the unlock control. The horn will chirp once if autounlock was
deactivated or twice (one short and one long chirp) if autounlock was
activated.
7. Turn the ignition to the 1 (OFF/LOCK) position. The horn will chirp
once to confirm the procedure is complete.
Keyless entry key pad autounlock enable/disable procedure
1. Turn the ignition to the 1
(OFF/LOCK) position.
2. Close all the doors.
3. Enter factory–set 5–digit entry
code.
4. Press and hold the 3•4. While holding the 3•4, press and release
the 7•8. While still holding the 3•4, press and release the 7•8a
second time.
5. Release the 3•4.
2008 F-250/350/450/550(f23)
Owners Guide (post-2002-fmt)
USA(fus)
Locks and Security
139

transmitter to each memory position using this procedure. The first
transmitter that is programmed will recall Driver 1 settings, and the
second transmitter that is programmed will recall Driver 2 settings.
How to program your remote entry transmitters
You must haveall remote keyless entry keypads and remote entry
transmitters(maximum of four) available before beginning this
procedure.Note:Do not press the brake pedal anytime during this
sequencing, as doing so will invalidate the procedure.
To reprogram the remote entry
transmitters:
1. Ensure the vehicle is
electronically unlocked.
2. Put the key in the ignition.
3. Cycle eight times rapidly (within
10 seconds) between the 1
(OFF/LOCK) position and 3 (ON).
Note:The eighth turn must end in
the 3 (ON) position. The doors will
lock, then unlock, to confirm that the programming mode has been
activated.
4. Within 20 seconds press any button on the remote entry transmitter.
Note:If more than 20 seconds have passed you will need to start the
procedure over again. The doors will lock, then unlock, to confirm that
this remote entry transmitter has been programmed.
5. Repeat Step 4 to program each additional remote entry transmitter.
6. Turn the ignition to the 1 (OFF/LOCK) position after you have
finished programming all of the remote entry transmitters.Note:After
20 seconds, you will automatically exit the programming mode. The
doors will lock, then unlock, to confirm that the programming mode has
been exited.
Perimeter lamps illuminated entry
With the Remote Keyless Entry system, the following items will
illuminate when the (unlock) control on the transmitter is pressed:
•Headlamps
•Parklamps
•Tail lamps
2008 F-250/350/450/550(f23)
Owners Guide (post-2002-fmt)
USA(fus)
Locks and Security
144

The lamps will automatically turn off:
•if the ignition switch is turned to the 3 (ON) position, or
•the Remote Keyless Entry Transmitter lock control is pressed, or
•the vehicle is locked using the keyless entry keypad (if equipped), or
•after 25 seconds of illumination.
Note:On some vehicles, the perimeter lamps illuminated entry feature
will not activate in daylight conditions.
Deactivating/activating perimeter lamps illuminated entry
You may enable/disable this feature by having your vehicle serviced by
your authorized dealer.
You may also perform the following power door lock sequence to
enable/disable the perimeter lamps feature.Note:Before starting, ensure
the ignition is in the 1 (OFF/LOCK) position and all vehicle doors are
closed.
You must complete Steps 1–5 within 30 seconds or the procedure will
have to be repeated. If the procedure needs to be repeated, wait a
minimum of 30 seconds before beginning again.
1. Place the key in the ignition and turn the ignition to the 3 (ON)
position.
2. Press the power door unlock
control on the door panel three
times.
3. Turn the ignition from the 3 (ON)
position to the 1 (OFF/LOCK)
position.
4. Press the power door unlock
control on the door panel three
times.
5. Turn the ignition back to the 3 (ON) position. The horn will chirp one
time to confirm programming mode has been entered and is active.
6. Press the power door unlock control twice within 5 seconds.
Note:The horn will chirp once to indicate the perimeter lighting feature
has been deactivated. The horn will chirp once and honk once (one short
and one long) to indicate the perimeter lighting feature has been
activated.
7. Turn the ignition to the 1 (OFF/LOCK) position to exit the procedure.
Note:The horn will chirp once to confirm the procedure is complete.
2008 F-250/350/450/550(f23)
Owners Guide (post-2002-fmt)
USA(fus)
Locks and Security
145

3. Enter your personal 5-digit code. Each number must be entered
within five seconds of each other.
4. To associate the entry code with a memory setting, enter a sixth digit
to indicate which driver should be set in a memory recalled by the
personal entry code:
•Pressing 1•2 recalls Driver 1 settings.
•Pressing 3•4 recalls Driver 2 settings.
•Pressing other keypad buttons or not pressing a keypad button as a
sixth digit does not set a driver and will not recall a memory setting.
Note:The factory-set code cannot be associated with a memory
setting.
5. The doors will again lock then unlock to confirm that your personal
keycode has been programmed to the module.
Tips:
•Do not set a code that uses five of the same number.
•Do not use five numbers in sequential order.
•The factory set code will work even if you have set your own personal
code.
Erasing personal code
1. Enter the factory set 5–digit code.
2. Within five seconds, press the 1•2 on the keypad and release.
3. Press and hold the 1•2 for two seconds. This must be done within
five seconds of completing Step 2.
Your personal code is now erased and only the factory set 5–digit code
will work.
Anti-scan feature
If an incorrect code has been entered 7 times (35 consecutive button
presses), the keypad will go into an anti-scan mode. This mode disables
the keypad for one minute and the keypad lamp will flash during this
time.
The anti-scan feature will turn off after:
•one minute of keypad inactivity.
•pressing the
control on the remote entry transmitter.
•the ignition is turned to the 3 (ON) position.
2008 F-250/350/450/550(f23)
Owners Guide (post-2002-fmt)
USA(fus)
Locks and Security
147

•Step 3 must be completed within 60 seconds after the safety belt
warning light turns off.
3. At a moderate speed, buckle then unbuckle the safety belt 9 times,
ending with the safety belt in the unbuckled state.
•After Step 3 is complete, the safety belt warning light will be turned
on for 3 seconds.
•If Step 4 does not occur within 10 seconds at the end of Step 3,
Belt-Minderwill automatically exit programming mode without
changing its enable status.
4. Within 7 seconds of the light turning on, at a moderate speed, buckle
then unbuckle the safety belt.
•This will disable the Belt-Minderfeature if it is currently enabled. As
confirmation, the safety belt warning light will flash 4 times per
second for 3 seconds.
•This will enable the Belt-Minderfeature if it is currently disabled. As
confirmation, the safety belt warning light will flash 4 times per
second for 3 seconds, followed by 3 seconds with the light off, then
followed by the safety belt warning light flashing 4 times per second
for 3 seconds again.
5. After receiving confirmation, the deactivation/activation procedure is
complete.
Safety belt extension assembly
If the safety belt is too short when fully extended, there isa8inch
(20 cm) safety belt extension assembly that can be added (part number
611C22). This assembly can be obtained from your authorized dealer.
Use only extensions manufactured by the same supplier as the safety
belt. Manufacturer identification is located at the end of the webbing on
the label. Also, use the safety belt extension only if the safety belt is too
short for you when fully extended.
Do not use extensions to change the fit of the shoulder belt
across the torso.
Safety belt maintenance
Inspect the safety belt systems periodically to make sure they work
properly and are not damaged. Inspect the safety belts to make sure
there are no nicks, tears or cuts. Replace if necessary. All safety belt
2008 F-250/350/450/550(f23)
Owners Guide (post-2002-fmt)
USA(fus)
Seating and Safety Restraints
170

Follow all instructions provided by the manufacturer of the
booster seat.
Never put the shoulder belt under a child’s arm or behind the
back because it eliminates the protection for the upper part of
the body and may increase the risk of injury or death in a collision.
Never use pillows, books, or towels to boost a child. They can
slide around and increase the likelihood of injury or death in a
collision.
SAFETY SEATS FOR CHILDREN
Child and infant or child safety seats
Use a safety seat that is recommended for the size and weight of the
child. Carefully follow all of the manufacturer’s instructions with the
safety seat you put in your vehicle. If you do not install and use the
safety seat properly, the child may be injured in a sudden stop or
collision.
When installing a child safety seat:
•Review and follow the information
presented in theAirbag
supplemental restraint system
(SRS) section in this chapter.
•Use the correct safety belt buckle
for that seating position (the
buckle closest to the direction the
tongue is coming from).
•Insert the belt tongue into the
proper buckle until you hear a
snap and feel it latch. Make sure the tongue is securely fastened in the
buckle.
•Keep the buckle release button pointing up and away from the safety
seat, with the tongue between the child seat and the release button,
to prevent accidental unbuckling.
•Place seat back in upright position.
•Put the safety belt in the automatic locking mode. Refer toAutomatic
locking mode(passenger side front and outboard rear seating
positions) (if equipped) section in this chapter.
2008 F-250/350/450/550(f23)
Owners Guide (post-2002-fmt)
USA(fus)
Seating and Safety Restraints
184

Power is supplied to all four wheels
through a transfer case or power
transfer unit. 4WD vehicles allow
you to select different drive modes
as necessary. Information on shifting
procedures and maintenance can be
found in yourOwner’s Guide.You
should become thoroughly familiar
with this information before you operate your vehicle.
On some 4WD models, the initial shift from two-wheel drive to 4WD
while the vehicle is moving can cause a momentary clunk and ratcheting
sound. These sounds are normal as the front drivetrain comes up to
speed and is not cause for concern.
Do not become overconfident in the ability of 4WD and AWD
vehicles. Although a 4WD or AWD vehicle may accelerate better
than two-wheel drive vehicle in low traction situations, it won’t stop
any faster than two-wheel drive vehicles. Always drive at a safe speed.
How your vehicle differs from other vehicles
SUV and trucks can differ from
some other vehicles in a few
noticeable ways. Your vehicle may
be:
•Higher – to allow higher load
carrying capacity and to allow it
to travel over rough terrain
without getting hung up or
damaging underbody components.
•Shorter – to give it the capability
to approach inclines and drive
over the crest of a hill without
getting hung up or damaging
underbody components. All other
things held equal, a shorter
wheelbase may make your vehicle
quicker to respond to steering inputs than a vehicle with a longer
wheelbase.
2008 F-250/350/450/550(f23)
Owners Guide (post-2002-fmt)
USA(fus)
Tires, Wheels and Loading
193