Ford 2008 F-150 Owner's Manual page 179

The Belt-Minder feature uses two different warning chimes. During the
first minute of activation, the warning chime will sound once every
second. The remaining warning chimes will sound twice every second
while the system is activated.
If...
The driver's and front
passenger's safety belts are
buckled...
The driver's or front
passenger's safety belt is not
buckled when the vehicle has
reached at least 6 mph and
1-2 minutes have elapsed since
the ignition switch has been
turned to ON...
The driver's or front
passenger's safety belt becomes
unbuckled for approximately
1 minute while the vehicle is
traveling at least 6 mph and
1-2 minutes have elapsed since
the ignition switch has been
turned to ON...
The Belt-Minder feature is
activated and the vehicle speed
is less than 3 mph...
2008 F-150
Owners Guide (post-2002-fmt)
USA
Seating and Safety Restraints
Then...
The Belt-Minder feature will not
activate.
The Belt-Minder feature is activated
- the safety belt warning light
illuminates and the warning chime
sounds for 6 seconds every
30 seconds, repeating for
approximately 5 minutes or until the
safety belts are buckled.
The Belt-Minder feature is activated
- the safety belt warning light
illuminates and the warning chime
sounds for 6 seconds every
30 seconds, repeating for
approximately 5 minutes or until the
safety belts are buckled.
The Belt-Minder feature is
suspended - the safety belt warning
light remains illuminated, but the
warning chime does not sound. This
time does not count towards the
5-minute expiration time.
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