Buick Lucerne 2007 Owner's Manual page 77

If the front of your vehicle goes straight into a wall
that does not move or deform, the threshold
level for the reduced deployment is about
12 to 16 mph (19 to 26 km/h), and the threshold
level for a full deployment is about 17 to 22 mph
(27 to 35 km/h) if the other sensors do not
over-ride this. The threshold level can vary,
however, with specific vehicle design, so that it
can be somewhat above or below this range.
Frontal airbags may inflate at different crash
speeds. For example:
•
If the vehicle hits a stationary object, the
airbags could inflate at a different crash speed
than if the vehicle hits a moving object.
•
If the vehicle hits an object that deforms, the
airbags could inflate at a different crash
speed than if the vehicle hits an object that
does not deform.
•
If the vehicle hits a narrow object (like a pole),
the airbags could inflate at a different crash
speed than if the vehicle hits a wide object
(like a wall).
•
If the vehicle goes into an object at an angle,
the airbags could inflate at a different crash
speed than if the vehicle goes straight into the
object.
Frontal airbags (driver and right front passenger)
are not intended to inflate during vehicle
rollovers, rear impacts, or in many side impacts.
Your vehicle has sensors which enable the
sensing system to monitor the position of the right
front passenger's seat, whether the occupant is
buckled or unbuckled. The passenger seat position
sensor and passenger safety belt buckle switch
provide information which is used to determine if
the airbags should deploy at a reduced level or full
deployment.
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