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When Should an Airbag Inflate?
The driver’s and right front passenger’s frontal airbags
are designed to inflate in moderate to severe frontal or
near-frontal crashes. But they are designed to inflate only
if the impact exceeds a predetermined deployment
threshold. Deployment thresholds take into account a
variety of desired deployment and non-deployment
events and are used to predict how severe a crash is
likely to be in time for the airbags to inflate and help
restrain the occupants. Whether your frontal airbags will
or should deploy is not based on how fast your vehicle is
traveling. It depends largely on what you hit, the direction
of the impact and how quickly your vehicle slows down.
In addition, your vehicle has “dual stage” frontal airbags,
which adjust the restraint according to crash severity.
For moderate frontal impacts, these airbags inflate at a
level less than full deployment. Your vehicle is equipped
with electronic frontal sensors, which help the sensing
system distinguish between a moderate frontal impact
and a more severe frontal impact. For more severe
frontal impacts, full deployment occurs. 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 18 mph (19 to 29 km/h),
and the threshold level for a full deployment is about
18 to 25 mph (29 to 40.2 km/h). (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.
The frontal airbags (driver and right front passenger) are
not intended to inflate during vehicle rollovers, rear
impacts, or in many side impacts.
Your vehicle may or may not have a side impact airbag.
See Airbag System on page 1-62. Side impact airbags
are intended to inflate in moderate to severe side
crashes. A side impact airbag will inflate if the crash
severity is above the system’s designed “threshold
level.” The threshold level can vary with specific vehicle
design. Side impact airbags are not intended to inflate
in frontal or near-frontal impacts, rollovers or rear
impacts. A side impact airbag is intended to deploy on
the side of the vehicle that is struck.
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