Subaru Impreza 2016 Manual page 91

An impact sensor, which senses impact
force, is located in each of the left and
right center pillars and rear wheel houses.
Another impact sensor, which also senses
impact force, is located in the airbag
control module.
If one of the center pillar impact sensors
and the impact sensor that is located in
the airbag control module together sense
an impact force above a predetermined
level in a side collision, the control module
causes both the SRS side airbag and SRS
curtain airbag on the impacted side to
inflate regardless of whether the rear
wheel house impact sensor on the same
side senses an impact.
If one of the rear wheel house impact
sensors and the impact sensor that is
located in the airbag control module
together sense an impact force above a
predetermined level in a side collision, the
control module causes only the SRS
curtain airbag on the impacted side to
inflate.
After the deployment, the SRS side airbag
immediately starts to deflate. The time
required from detection of an impact to
deflation of an SRS side airbag after
deployment is shorter than the blink of
an eye. The SRS curtain airbag remains
inflated for a while following deployment
Seat, seatbelt and SRS airbags/*SRS airbag (Supplemental Restraint System airbag)
then slowly deflates.
The SRS side airbag and SRS curtain
airbag deploy even when no one occupies
the seat on the side on which an impact is
applied.
The SRS side airbag and SRS curtain
airbag are designed as follows:
. to deploy in the event of an accident
involving a moderate to severe side
impact collision.
. to function on a one-time-only basis.
The SRS side airbag and SRS curtain
airbag are not designed to deploy in the
following cases:
. in most lesser side impact
. in most frontal or most rear impacts
(because the SRS side airbag and SRS
curtain airbag deployment would not
protect the occupant in those situations)
The SRS side airbag and SRS curtain
airbag deployment depend on the level of
force experienced in the passenger com-
partment during a side impact collision.
That level differs from one type of collision
to another, and it may have no bearing on
the visible damage done to the vehicle
itself.
! When will the SRS side airbag
and SRS curtain airbag most
likely deploy?
A severe side impact near the front seat
activates the SRS side airbag and SRS
curtain airbag.
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