FORD F-450 2021 Service Manual

PRINCIPLE OF OPERATION
WARNING: Always drive and ride
with your seatback upright and the lap
belt snug and low across the hips. WARNING:
Children must always
be properly restrained. WARNING:
Do not allow a
passenger to hold a child on their lap
when your vehicle is moving. Failure to
follow this instruction could result in
personal injury or death in the event of a
sudden stop or crash. WARNING:
All occupants of your
vehicle, including the driver, should
always properly wear their seatbelts,
even when an airbag supplemental
restraint system is provided. Failure to
properly wear your seatbelt could
seriously increase the risk of injury or
death. WARNING:
It is extremely
dangerous to ride in a cargo area, inside
or outside of a vehicle. In a crash, people
riding in these areas are more likely to be
seriously injured or killed. Do not allow
people to ride in any area of your vehicle
that is not equipped with seats and
seatbelts. Make sure everyone in your
vehicle is in a seat and properly using a
seatbelt. Failure to follow this warning
could result in serious personal injury or
death. WARNING:
In a rollover crash, an
unbelted person is significantly more
likely to die than a person wearing a
seatbelt. WARNING:
Each seating position
in your vehicle has a specific seatbelt
assembly made up of one buckle and
one tongue designed to be used as a pair.
Use the shoulder belt on the outside
shoulder only. Never wear the shoulder
belt under the arm. Never use a single
seatbelt for more than one person. WARNING:
Even with advanced
restraints systems, properly restrain
children 12 and under in a rear seating
position. Failure to follow this could
seriously increase the risk of injury or
death. WARNING:
Seatbelts and seats
may be hot in a vehicle that is in the
sunshine. The hot seatbelts or seats may
burn a small child. Check seat covers and
buckles before you place a child
anywhere near them.
All seating positions in this vehicle have
lap and shoulder belts. All occupants of
the vehicle should always properly wear
their seatbelts, even when an airbag
supplemental restraint system is provided.
The seatbelt system consists of:
• Lap and shoulder seatbelts.
• Shoulder seatbelts with automatic
locking mode, (except the driver
seatbelt).
• Height adjusters at the front outermost
seating positions.
• Seatbelt pretensioners at the front
outermost and rear outermost seating
positions. •
Seatbelt warning light and chime.
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•
Crash sensors and monitoring system
with readiness indicator.
The seatbelt pretensioners are designed
to tighten the seatbelts when activated. In
frontal and near-frontal crashes, the
seatbelt pretensioners may be activated
alone or, if the crash is of sufficient severity,
together with the front airbags. In side
crashes and rollovers, the seatbelt
pretensioners activate when the Safety
Canopy is activated.
FASTENING THE SEATBELTS
The front outermost and rear safety
restraints in the vehicle are combination
lap and shoulder belts. 1. Insert the belt tongue into the proper
buckle (the buckle closest to the
direction the tongue is coming from)
until you hear a snap and feel it latch.
Make sure you securely fasten the
tongue in the buckle. 2. To unfasten, press the release button
and remove the tongue from the
buckle.
Using the Seatbelt with Cinch
Tongue (Front Center Seat on
Super Cab and Crew Cab)
The cinch tongue slides up and down the
belt webbing when you stow the belt or
while putting seatbelts on. When you
buckle the lap and shoulder seatbelt, the
cinch tongue allows you to shorten the lap
portion, but pinches the webbing to keep
the lap portion from getting longer. The
cinch tongue is designed to slip during a
crash, so always wear the shoulder belt
properly and do not allow any slack in
either the lap or shoulder portions.
Before you can reach and latch a lap and
shoulder belt having a cinch tongue into
the buckle, you may have to lengthen the
lap belt portion of it.
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1. To lengthen the lap belt, pull some
webbing out of the shoulder belt
retractor.
2. While holding the webbing below the tongue, grasp the tip (metal portion)
of the tongue so that it is parallel to the
webbing and slide the tongue upward.
3. Provide enough lap belt length so that
the tongue can reach the buckle.
Fastening the Cinch Tongue WARNING: Always drive and ride
with your seatback upright and the lap
belt snug and low across the hips.
1. Pull the lap and shoulder belt from the
retractor so that the shoulder belt
portion of the seatbelt crosses your
shoulder and chest.
2. Be sure the belt is not twisted. If the belt is twisted, remove the twist.
3. Insert the belt tongue into the proper buckle for your seating position until
you hear a snap and feel it latch.
4. Make sure you securely fasten the tongue to the buckle by pulling on the
tongue. While you are fastened in the seatbelt, the
lap and shoulder belt with a cinch tongue
adjusts to your movement. However, if you
brake hard, turn hard, or if your vehicle
receives an impact of
5 mph (8 km/h) or
more, the seatbelt locks and helps reduce
your forward movement.
Using Seatbelts During Pregnancy WARNING:
Always ride and drive
with your seatback upright and properly
fasten your seatbelt. Fit the lap portion
of the seatbelt snugly and low across
the hips. Position the shoulder portion of
the seatbelt across your chest. Pregnant
women must follow this practice. See
the following figure. Pregnant women should always wear their
seatbelt. Position the lap belt portion of a
combination lap and shoulder belt low
across the hips below the belly and worn
as tight as comfort allows. Position the
shoulder belt to cross the middle of the
shoulder and the center of the chest.
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Seatbelt Locking Modes
WARNING: If your vehicle is
involved in a crash, have the seatbelts
and associated components inspected
as soon as possible. Failure to follow this
instruction could result in personal injury
or death.
All safety restraints in the vehicle are
combination lap and shoulder belts. The
driver seatbelt has the first type of locking
mode. The front outermost passenger and
rear seat seatbelts have both types of
locking modes described as follows:
Vehicle Sensitive Mode
This is the normal retractor mode, which
allows free shoulder belt length
adjustment to your movements and
locking in response to vehicle movement.
For example, if the driver brakes suddenly,
turns a corner sharply, or the vehicle
receives an impact of about
5 mph
(8 km/h) or more, the combination
seatbelts lock to help reduce forward
movement of the driver and passengers.
In addition, the retractor is designed to lock
if you pull the webbing out too quickly. If
the seatbelt retractor locks, slowly lower
the height adjuster to allow the seatbelt
to retract. If the retractor does not unlock,
pull the seatbelt out slowly then feed a
small length of webbing back toward the
stowed position. For rear seatbelts, recline
the rear seat backrest or push the seat
backrest cushion away from the seatbelt.
Feed a small length of webbing back
toward the stowed position. Automatic Locking Mode
In this mode, the shoulder belt
automatically pre-locks. The belt still
retracts to remove any slack in the
shoulder belt. The automatic locking mode
is not available on the driver seatbelt.
When to Use the Automatic Locking
Mode
Use this mode any time you install a child
restraint in a front outermost passenger
seating position in a Regular Cab,
SuperCab, SuperCrew or any rear seating
position of a SuperCab or SuperCrew. The
optional front center seatbelt has a cinch
mechanism. Properly restrain children 12
years old and under in a rear seat whenever
possible.
How to Use the Automatic Locking
Mode
1. Buckle the combination lap and
shoulder belt.
2. Grasp the shoulder portion and pull downward until you pull the entire belt
out.
3. Allow the belt to retract. As the belt retracts, you will hear a clicking sound.
This indicates the seatbelt is now in the
automatic locking mode.
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How to Disengage the Automatic
Locking Mode
Unbuckle the combination lap and
shoulder belt and allow it to retract
completely to disengage the automatic
locking mode and activate the vehicle
sensitive (emergency) locking mode.
SEATBELT HEIGHT
ADJUSTMENT
WARNING: Position the safety belt
height adjuster so that the belt rests
across the middle of your shoulder.
Failure to adjust the safety belt properly
could reduce the effectiveness of the
safety belt and increase the risk of injury
in a crash. Adjust the height of the shoulder belt so
the belt rests across the middle of your
shoulder.
To adjust the shoulder belt height:
1. Pull the button and slide the height
adjuster up or down.
2. Release the button and pull down on the height adjuster to make sure it is
locked in place.
SEATBELT WARNING LAMP
AND INDICATOR CHIME This lamp illuminates and an
indicator chime will sound if the
driver seatbelt has not been
fastened when the vehicle's ignition is
turned on.
Conditions of operation Then
If
The seatbelt warning lamp illuminates andthe indicator chime sounds for a few seconds.
The driver seatbelt is not buckled before
the ignition switch is turned to the on posi- tion...
The seatbelt warning lamp and indicatorchime turn off.
The driver seatbelt is buckled while the
warning lamp is illuminated and the indic- ator chime is sounding...
The seatbelt warning lamp and indicatorchime remain off.
The driver seatbelt is buckled before the
ignition switch is turned to the on position...
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SEATBELT REMINDER
Belt-Minder™
This feature supplements the seatbelt
warning function. It provides additional
reminders by intermittently sounding a
tone and illuminating the seatbelt warning
light when you are in the driver seat and a
seatbelt is unbuckled. Then
If
The Belt-Minder feature will not activate.
You buckle your seatbelt before you switch
the ignition on or less than 1-2 minutes
elapse after you switch the ignition on...
The Belt-Minder feature activates - the
seatbelt warning light illuminates and a
warning tone sounds for six seconds every 25 seconds, repeating for about five
minutes or until you buckle your seatbelt.
You do not buckle your seatbelt before your
vehicle reaches at least 6 mph (9.7 km/h)
and 1-2 minutes elapse after you switch the ignition on...
The Belt-Minder feature activates - the
seatbelt warning light illuminates and the
warning tone sounds for six seconds every 25 seconds, repeating for about five
minutes or until you buckle your seatbelt.
The driver seatbelt is unbuckled for about
one minute while the vehicle is traveling at least
6 mph (9.7 km/h) and more than 1-2
minutes elapse after you switch the ignition on...
Deactivating and Activating the
Belt-Minder Feature (Driver only) WARNING:
While the system
allows you to deactivate it, this system
is designed to improve your chances of
being safely belted and surviving an
accident. We recommend you leave the
system activated for yourself and others
who may use the vehicle.
Note: If you are using MyKey, you cannot
disable the Belt-Minder. Also, if the
Belt-Minder has been previously disabled,
it will be re-enabled during the use of
MyKey. See
MyKey ™ (page 61).
Read Steps 1 - 4 thoroughly before
proceeding with the programming
procedure. Before following the procedure, make sure
that:
•
The parking brake is set.
• The transmission is in park (P).
• The ignition is off.
• All vehicle doors are closed.
• The driver seatbelt is unbuckled.
1. Switch the ignition on. Do not start the
engine.
2. Wait until the seatbelt warning light turns off (about one minute). You must
complete Step 3 within 30 seconds
after the seatbelt warning light turns
off.
3. Buckle then unbuckle the seatbelt three times at a moderate speed,
ending with the seatbelt in the
unbuckled state. After Step 3, the
seatbelt warning light turns on.
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4. While the seatbelt warning light is on,
buckle then unbuckle the seatbelt.
After Step 4, the seatbelt warning light
flashes for confirmation.
• This will switch the feature off if it is
currently on.
• This will switch the feature on if it is
currently off.
CHILD RESTRAINT AND
SEATBELT MAINTENANCE
Inspect the vehicle seatbelts and child
safety seat systems periodically to make
sure they work properly and are not
damaged. Inspect the vehicle and child
restraint seatbelts to make sure there are
no nicks, tears or cuts. Replace if
necessary. All vehicle seatbelt assemblies,
including retractors, buckles, front seatbelt
buckle assemblies, buckle support
assemblies (slide bar-if equipped),
shoulder belt height adjusters (if
equipped), shoulder belt guide on seat
backrest (if equipped), child safety seat
LATCH and tether anchors, and attaching
hardware, should be inspected after a
crash. Read the child restraint
manufacturer's instructions for additional
inspection and maintenance information
specific to the child restraint.
We recommend that all seatbelt
assemblies in use in vehicles involved in a
crash be replaced. However, if the crash
was minor and an authorized dealer finds
that the belts do not show damage and
continue to operate properly, they do not
need to be replaced. Seatbelt assemblies
not in use during a crash should also be
inspected and replaced if either damage
or improper operation is noted.
Properly care for seatbelts. See Vehicle
Care (page 391). SEATBELT EXTENSIONS WARNING:
Persons who fit into
the vehicle's seatbelt should not use an
extension. Unnecessary use could result
in serious personal injury in the event of
a crash. WARNING:
Only use extensions
provided free of charge by our dealers.
The dealer will provide an extension
designed specifically for this vehicle,
model year and seating position. The use
of an extension intended for another
vehicle, model year or seating position
may not offer you the full protection of
your vehicle's seatbelt restraint system. WARNING:
Never use seatbelt
extensions to install child restraints. WARNING:
Do not use a seatbelt
extension with an inflatable seatbelt. WARNING:
Do not use extensions
to change the way the seatbelt fits
across the torso, over the lap or to make
the seatbelt buckle easier to reach.
If, because of body size or driving position,
it is not possible to properly fasten the
seatbelt over your lap and shoulder, an
extension that is compatible with the
seatbelts is available free of charge from
our dealers. Only use our seatbelt
extensions made by the original equipment
seatbelt manufacturer with our seatbelts.
Ask your authorized dealer if your extension
is compatible with your vehicle restraint
system.
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PRINCIPLE OF OPERATION
WARNING: Airbags do not inflate
slowly or gently, and the risk of injury
from a deploying airbag is the greatest
close to the trim covering the airbag
module. WARNING:
All occupants of your
vehicle, including the driver, should
always properly wear their seatbelts,
even when an airbag supplemental
restraint system is provided. Failure to
properly wear your seatbelt could
seriously increase the risk of injury or
death. WARNING:
Properly secure
children 12 years old and under in a rear
seating position whenever possible. If
you are unable to properly secure all
children in a rear seating position,
properly secure the largest child on the
front seat. If you must use a forward
facing child restraint on the front seat,
move the seat as far back as possible.
Failure to follow these instructions could
result in personal injury or death. WARNING:
Do not place your arms
on the airbag cover or through the
steering wheel. Failure to follow this
instruction could result in personal injury. WARNING:
Do not place a
rearward facing child restraint in front of
an active airbag. Failure to follow this
instruction could result in personal injury
or death. WARNING:
Do not attempt to
service, repair, or modify the
supplementary restraint system or
associated components. Failure to
follow this instruction could result in
personal injury or death. WARNING:
Several airbag system
components get hot after inflation. To
reduce the risk of injury, do not touch
them after inflation. WARNING:
If a supplementary
restraint system component has
deployed, it will not function again. Have
the system and associated components
inspected as soon as possible. Failure to
follow this instruction could result in
personal injury or death.
The airbags are a supplemental restraint
system and are designed to work with the
seatbelts to help protect the driver and
right front passenger from certain upper
body injuries. Airbags do not inflate slowly;
there is a risk of injury from a deploying
airbag.
Note: You will hear a loud bang and see a
cloud of harmless powdery residue if an
airbag deploys. This is normal.
The airbags inflate and deflate rapidly
upon activation. After airbag deployment,
it is normal to notice a smoke-like, powdery
residue or smell the burnt propellant. This
may consist of cornstarch, talcum powder
(to lubricate the bag) or sodium
compounds (for example, baking soda)
that result from the combustion process
that inflates the airbag. Small amounts of
sodium hydroxide may be present which
may irritate the skin and eyes, but none of
the residue is toxic.
While the system is designed to help
reduce serious injuries, contact with a
deploying airbag may also cause abrasions
or swelling. Temporary hearing loss is also
a possibility as a result of the noise
associated with a deploying airbag.
Because airbags must inflate rapidly and
with considerable force, there is the risk of
death or serious injuries such as fractures,
facial and eye injuries or internal injuries,
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particularly to occupants who are not
properly restrained or are otherwise out of
position at the time of airbag deployment.
Thus, it is extremely important that
occupants be properly restrained as far
away from the airbag module as possible
while maintaining vehicle control.
Routine maintenance of the airbags is not
required.
DRIVER AND PASSENGER
AIRBAGS
WARNING: Do not place your arms
on the airbag cover or through the
steering wheel. Failure to follow this
instruction could result in personal injury. WARNING:
Do not place a
rearward facing child restraint in front of
an active airbag. Failure to follow this
instruction could result in personal injury
or death. The driver and front passenger airbags
deploy during significant frontal and near
frontal crashes.
The driver and passenger front airbag
system consists of:
•
Driver and passenger airbag modules. · Crash sensors and monitoring
system with readiness indicator.
See Crash Sensors and Airbag
Indicator
(page 53).
Passenger Airbag On and Off
Switch
(If Equipped) WARNING:
Even with advanced
restraints systems, properly restrain
children 12 and under in a rear seating
position. Failure to follow this could
seriously increase the risk of injury or
death. WARNING:
The front passenger
airbag is not designed to offer protection
to an occupant in the center seating
position. WARNING:
Your vehicle may have
an airbag deactivation switch. Before
driving, always look at the switch to
make sure it is in the appropriate
position. Failure to put the switch in the
proper position can increase the risk of
serious injury or death in a crash. The front passenger airbag on and off
switch has indicators that illuminate,
indicating that the front passenger frontal
airbag is either on or off. The indicators are
near the center of the instrument panel.
Note:
The OFF and ON indicators illuminate
for a short period of time when you switch
the ignition on to confirm it is functional.
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Passenger Airbag
Passenger Airbag Status
Indicator
Switch Position
Disabled
OFF: Lit
Off
ON: Unlit Enabled
OFF: Unlit
On
ON: Lit
Switching the Passenger Airbag Off WARNING: If the light does not
illuminate when the passenger airbag
switch is off and you switch the ignition
on, have the passenger airbag switch
serviced immediately by a qualified
technician. WARNING:
To avoid switching on
the airbag, always remove the ignition
key with the switch in the off position. WARNING:
If your vehicle has rear
seats, always transport children who are
12 and younger in the rear seat. Always
use seatbelts and child restraints
properly. Do not place a child in a rear
facing infant seat in the front seat unless
your vehicle is equipped with an airbag
on and off switch and the passenger
airbag is turned off. This is because the
back of the infant seat is too close to the
inflating airbag and the risk of a fatal
injury to the infant when the airbag
inflates is substantial.
The passenger airbag on and off switch is
in the glovebox. 1. Insert the ignition key, turn the switch
to OFF and hold in OFF while removing
the key.
2. When you switch the ignition on, the passenger airbag off light illuminates
briefly, momentarily shuts off and then
switches back on. This indicates that
the passenger airbag is deactivated.
Switching the Passenger Airbag Back
On WARNING:
The seatbelts for the
driver and right front passenger seating
positions are specifically designed to
operate together with the airbags in
certain types of crashes. When you
switch off your airbag, you not only lose
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