FORD F-250 - Manual (Page 77)

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 the tongue is
securely fastened in the buckle.
2. To unfasten, push the release
button and remove the tongue from
the buckle.
The front and rear outboard safety restraints in the vehicle are
combination lap and shoulder belts. The front passenger and rear seat
outboard safety belts have two types of locking modes described below:
Vehicle sensitive mode
The vehicle sensitive mode is the normal retractor mode, allowing free
shoulder belt length adjustment to your movements and locking in
response to vehicle movement. For example, if the driver brakes
suddenly or turns a corner sharply, or the vehicle receives an impact of
approximately 8 km/h (5 mph) or more, the combination safety belts will
lock to help reduce forward movement of the driver and passengers.
On SuperCab and CrewCab models, the front seat belt system can also
be made to lock manually by quickly pulling on the shoulder belt.
Rear seat belts (if equipped) cannot be made to lock up by pulling
quickly on the belt.
Seating and safety restraints
77