Page 16 of 408

by applying the parking brake when the ignition is turned to the on
position. If the brake system warning light does not illuminate at this
time, seek service immediately from your authorized dealer. Illumination
after releasing the parking brake indicates low brake fluid level and the
brake system should be inspected immediately by your servicing
authorized dealer.
WARNING: Driving a vehicle with the brake system warning
light on is dangerous. A significant decrease in braking
performance may occur. It will take you longer to stop the vehicle.
Have the vehicle checked by your authorized dealer immediately.
Driving extended distances with the parking brake engaged can cause
brake failure and the risk of personal injury.
Anti-lock brake system: If the
ABS light stays illuminated or
continues to flash, a malfunction has
been detected, have the system
serviced immediately by your
authorized dealer. Normal braking is still functional unless the brake
warning light also is illuminated.
Airbag readiness: If this light fails
to illuminate when ignition is turned
to on, continues to flash or remains
on, have the system serviced
immediately by your authorized dealer. A chime will sound when there is
a malfunction in the indicator light.
Safety belt: Reminds you to fasten
your safety belt. A Belt-Minder
chime will also sound to remind you
to fasten your safety belt. Refer to
the Seating and Safety Restraints
chapter to activate/deactivate the Belt-Minder chime feature.
Engine oil pressure: Illuminates
when the oil pressure falls below the
normal range. Refer to Engine oil
in the Maintenance and
Specifications chapter. ABSInstrument Cluster
16
2010 F-250/350/450/550 (f23)
Owners Guide, 2nd Printing
USA (fus)
Page 183 of 408

WARNING: Do not sit on top of a buckled safety belt or insert a
latchplate into the buckle to avoid the Belt-Minder chime. To
do so may adversely affect the performance of the vehicle’s airbag
system.
One-time disable
Any time the safety belt is buckled and then unbuckled during an
ignition on cycle, the Belt-Minder will be disabled for that ignition cycle
only.
Deactivating/activating the Belt-Minder feature (Driver only)
The Belt-Minder feature can be deactivated/activated by performing the
following procedure:
Before following the procedure, make sure that the following conditions
are met:
• the parking brake is set
• the gearshift is in P (Park)
• the ignition switch is in the off position
• all vehicle doors are closed
• the driver’s safety belt is unbuckled
• the parklamps/headlamps are in the off position
WARNING: While the design allows you to deactivate your
Belt-Minder , this system is designed to improve your chances of
being safely belted and surviving an accident. We recommend you
leave the Belt-Minder system activated for yourself and others who
may use the vehicle. To reduce the risk of injury, do not
deactivate/activate the Belt-Minder feature while driving the vehicle.
Belt-Minder activation and deactivation procedure
1. Turn the ignition switch to the on position. (DO NOT START THE
ENGINE)
2. Wait until the safety belt warning light turns off. (approximately one
minute)
• Step 3 must be completed within 60 seconds after the safety belt
warning light turns off. Seating and Safety Restraints
183
2010 F-250/350/450/550 (f23)
Owners Guide, 2nd Printing
USA (fus)
Page 190 of 408

Passenger airbag ON/OFF switch (if equipped)
WARNING: An airbag
ON/OFF switch (if
equipped) may be installed in this
vehicle. Before driving, always
look at the face of the switch to
be sure the switch is in the proper
position in accordance with these
instructions and warnings. Failure
to put the switch in a proper
position can increase the risk of
serious injury or death in a
collision.
Turning the passenger airbag off
1. Insert the ignition key, turn the
switch to OFF position and hold in
OFF position while removing the
key.
2. When the ignition is turned to the
ON position the OFF light
illuminates briefly, momentarily
shuts off and then turns back on.
This indicates that the passenger
airbag is deactivated.
WARNING: If the light fails to illuminate when the passenger air
bag switch is in the OFF position and the ignition switch is in
ON, have the passenger air bag switch serviced at your authorized
dealer immediately.
WARNING: In order to avoid inadvertent activation of the
switch, always remove the ignition key from the passenger air
bag ON/OFF switch.Seating and Safety Restraints
190
2010 F-250/350/450/550 (f23)
Owners Guide, 2nd Printing
USA (fus)
Page 192 of 408

WARNING: If your vehicle has rear seats, always transport
children who are 12 and younger in the rear seat. Always use
safety belts 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/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 vast majority of drivers and passengers are much safer with an
airbag than without. To do their job and reduce the risk of life
threatening injuries, airbags must open with great force, and this force
can pose a potentially deadly risk in some situations, particularly when a
front seat occupant is not properly buckled up. The most effective way
to reduce the risk of unnecessary airbag injuries without reducing the
overall safety of the vehicle is to make sure all occupants are properly
restrained in the vehicle, especially in the front seat. This provides the
protection of safety belts and permits the airbags to provide the
additional protection they were designed to provide. If you choose to
deactivate your airbag, you are losing the very significant risk reducing
benefits of the airbag and you are also reducing the effectiveness of the
safety belts, because safety belts in modern vehicles are designed to
work as a safety system with the airbags.
Read all airbag warning labels in the vehicle as well as the other
important airbag instructions and warnings in this Owner’s Guide.
NHTSA deactivation criteria (excluding Canada)
1. Infant. An infant (less than 1 year old) must ride in the front seat
because:
• the vehicle has no rear seat;
• the vehicle has a rear seat too small to accommodate a rear-facing
infant seat; or
• the infant has a medical condition which, according to the infant’s
physician, makes it necessary for the infant to ride in the front so that
the driver can constantly monitor the child’s condition.
2. Child age 1 to 12. A child age 1 to 12 must ride in the front seat
because:
• the vehicle has no rear seat;
• although children ages 1 to 12 ride in the rear seat(s) whenever
possible, children ages 1 to 12 sometimes must ride in the front
because no space is available in the rear seat(s) of the vehicle; orSeating and Safety Restraints
192
2010 F-250/350/450/550 (f23)
Owners Guide, 2nd Printing
USA (fus)