Buick LaCrosse 2011 Owner's Manual page 87

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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.
Thresholds can also vary with
specific vehicle design.
Frontal airbags are not intended to
inflate during vehicle rollovers, rear
impacts, or in many side impacts.
In addition, the vehicle has
dual-stage frontal airbags.
Dual-stage airbags adjust the
restraint according to crash
severity. The vehicle has electronic
frontal sensors, which help
the sensing system distinguish
between a moderate frontal
impact and a more severe frontal
impact. For moderate frontal
impacts, dual-stage airbags inflate
at a level less than full deployment.
For more severe frontal impacts,
full deployment occurs.
I n f o r ma t i o n P r o v i d e d b y :
Seats and Restraints
The vehicle has seat-mounted
side impact and roof-rail airbags.
See Airbag System on page 3 29.
Seat-mounted side impact and
roof-rail airbags are intended to
inflate in moderate to severe side
crashes. In addition, these roof rail
airbags are intended to inflate
during a rollover or in a severe
frontal impact. Seat-mounted side
impact and roof-rail airbags will
inflate if the crash severity is above
the system's designed threshold
level. The threshold level can vary
with specific vehicle design.
Roof rail airbags are not intended to
inflate in rear impacts. Both roof rail
airbags will deploy when either side
of the vehicle is struck or if the
sensing system predicts that the
vehicle is about to roll over, or in
a severe frontal impact.
3-33

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