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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.
Single Stage vs. Dual Stage Airbags
Depending on the weight of the vehicle, you will have
either “Single Stage Airbags” or “Dual Stage Airbags.”
Vehicles that have a passenger sensing system also
have dual stage airbags. See Passenger Airbag Status
Indicator
on page 4‑25
or Passenger Sensing System
on page 2‑73
.
If the GVWR (Gross Vehicle Weight Rating) of the
vehicle is 8,500 lb (3 855 kg) or above, the vehicle
may have single stage airbags. If the GVWR is below
8,500 lb (3 855 kg) then the vehicle may have dual
stage airbags. You can find the GVWR on the
certification label on the rear edge of the driver door.
See Loading the Vehicle
on page 5‑19
for more
information.
In addition, the vehicle may have 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.
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