Ford 2011 F-250 Owner's Manual page 184

Seating and Safety Restraints
Children 12 years old and under should always be properly restrained in
the second row seats. The Safety Canopy will not interfere with
children restrained using a properly installed child or booster seat
because it is designed to inflate downward from the headliner above the
doors along the side window opening.
The Safety Canopy System is designed to active when the vehicle
sustains lateral deceleration sufficient to cause the RCM to initiate Safety
Canopy inflation or when a certain likelihood of a rollover event is
detected by the rollover sensor.
The Safety Canopy is mounted to roof side-rail sheet metal, behind the
headliner, above each row of seats. The Safety Canopy is designed to
inflate between the side window area and occupants to further enhance
protection provided in side impact collisions and rollover events.
The fact that the Safety Canopy did not activate in a collision does not
mean that something is wrong with the system. Rather, it means the
forces were not of the type sufficient to cause activation. The Safety
Canopy is designed to inflate in certain side impact collisions or rollover
events, not in rear impact, frontal or near-frontal collisions, unless the
collision causes sufficient lateral deceleration or rollover likelihood.
WARNING: Several Safety
Canopy System
components get hot after inflation.
Do not touch them after inflation.
WARNING: If the Safety Canopy System has deployed, the
Safety Canopy will not function again unless replaced. The
Safety Canopy System (including the A, B, C, and D pillar trim and
headliner) must be inspected and serviced by an authorized dealer. If
the Safety Canopy is not replaced, it will not function again, which
will increase the risk of injury in a future collision.
184
2011 F-250/350/450/550 (f23)
Owners Guide, 1st Printing
USA (fus)