FORD 2003 F-550 v.2 - Manual (Page 82)

In the event of a collision, the
colored label (REPLACE BELT)
may become visible. If this occurs,
the safety belt must be replaced.
Whenever the yellow
portion of the label is
visible, the safety belt must be
replaced.
Failure to follow these
instructions will affect the
performance of the safety belts
and increase the risk of personal
injury.
Safety belt pretensioner
Your vehicle is equipped with safety belt pretensioners at the driver and
front outboard passenger seating positions.
If your vehicle is equipped with a Seat Integrated Restraints (SIR) seat
(which has shoulder belts attached to the corners of the front seat
back), it is equipped with a buckle pretensioner. Do NOT place objects
between the seats, this could interfere with the functioning of the
pretensioner. For the SuperCab and CrewCab base bench seats and all
Regular Cab seating positions, the safety belts are equipped with a
retractor pretensioner.
The driver and front outboard passenger safety belt pretensioners are
designed to activate only during certain frontal or near-frontal collisions
with sufficient longitudinal deceleration. A safety belt pretensioner is a
device which tightens the webbing of the lap and shoulder belts during
some collisions in such a way that they fit more snugly against the body.
The driver and front outboard passenger safety belt system (including
retractors, buckles and height adjusters) must be replaced if the vehicle
Seating and Safety Restraints
82