Subaru 2008 Impreza Owner's Manual page 79

There are many types of collisions which
might not necessarily require deployment
of driver's/driver's and front passenger's
SRS frontal airbag(s). In the event of
accidents like those illustrated, the dri-
ver's/driver's and front passenger's SRS
frontal airbag(s) may not deploy depend-
ing on the level of accident forces in-
volved.
! Examples of the types of accidents
in which the driver's/driver's and
front passenger's SRS frontal
airbag(s) will basically not deploy.
The driver's and front passenger's SRS
frontal airbags are designed basically not
Seat, seatbelt and SRS airbags
to deploy if the vehicle is struck from the
side or from behind, or if it rolls onto its
side or roof, or if it is involved in a low-
speed frontal collision.
1) First impact
2) Second impact
In an accident where the vehicle is
impacted more than once, the driver's
and/or front passenger's SRS frontal
airbag(s) will deploy only once on the first
impact.
Example: In the case of a double collision,
first with another vehicle, then against a
concrete wall in immediate succession,
once either or both of the driver's and front
passenger's SRS frontal airbags is/are
activated on the first impact, it/they will not
be activated on the second impact.
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