Lincoln 2011 MKX Owner's Manual page 157

The safety canopy is mounted to roof side-rail sheet metal, behind the
headliner, above each row of seats. In certain lateral collisions or rollover
events, the Safety Canopy System will be activated, regardless of which
seats are occupied. 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.
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.
2011 MKX (mkx)
Owners Guide, 1st Printing
USA (fus)
Seating and Safety Restraints
157