airbag SUBARU WRX 2018 Repair Manual

(85,1)
北米Model "A1700BE-B" EDITED: 2017/ 10/ 11
!Examples of the types of acci-
dents in which the driver’s/dri-
ver’s and front passenger’s SRS
frontal airbag(s) are not de-
signed to deploy in most cases
The driver’s and front passenger’s SRSfrontal airbags are not designed to deploy
in most of the following cases.
.If the vehicle is struck from the side or
from behind
.If the vehicle rolls onto its side or roof
.If the vehicle is involved in a low-speed
frontal collision
1) First impact
2) Second impactIn 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.
&SRS side airbag and SRS
curtain airbag!SRS side airbag
The SRS side airbag is stored in the door
side of each front seat seatback, which
bears an“SRS AIRBAG”label.
Inamoderatetoseveresideimpact
collision, the SRS side airbag on the
impacted side of the vehicle deploys
between the occupant and the door panel
and supplements the seatbelt by reducing
the impact on the occupant’s chest and
waist. The SRS side airbag operates only
for front seat occupants.
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北米Model "A1700BE-B" EDITED: 2017/ 10/ 11
!SRS curtain airbag
Your vehicle is equipped with a SUBARU
SRS curtain airbag system that complies
with the Federal Motor Vehicle Safety
Standard (FMVSS) No. 226.
The SRS curtain airbag on each side of the
cabin is stored in the roof side (between
the front pillar and a point over the rear
seat). An“SRS AIRBAG”mark is located
at the top of each center pillar.
Inamoderatetoseveresideimpact
collision, the SRS curtain airbag on the
impacted side of the vehicle deploys
between the occupant and the side win-
dow and supplements the seatbelt by
reducing the impact on the occupant’s
head.
In a rollover, SRS curtain airbags on both
sides of the vehicle deploy between the
occupant and the side window and supple-
ment the seatbelt by reducing the impact to
the occupant’s head.
In an offset frontal collision, SRS curtain
airbags on both sides of the vehicle deploy
between the occupant and the side win-
dow and supplement the seatbelt by
reducing the impact to the occupant’s
head.!Operation
The SRS side airbag and SRS curtain
airbag can function only when the ignition
switch is in the“ON”position.
The following airbags deploy indepen-
dently of each other since each has its
own impact sensor.
.Driver’s SRS side airbag
.Front passenger’s SRS side airbag
.SRS curtain airbag (right-hand side)
.SRS curtain airbag (left-hand side)
Therefore, they may not both deploy in the
same accident. Also, the SRS side airbag
and SRS curtain airbag deploys indepen-
dently of the driver’s and front passenger’s
SRS frontal airbags in the steering wheel
and instrument panel.
An impact sensor, which senses impact
force, is located in each of the following
locations.
.In the left and right front doors
.In the left and right center pillars
.In the left and right rear wheel houses
.Under the rear center seat
.On both sides of the radiator panel
(frontal impact sensor)
The rollover sensor and frontal impact
sensor are located inside the airbagcontrol module, which is located under
the center of the instrument panel.
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北米Model "A1700BE-B" EDITED: 2017/ 10/ 11
!In cases of rollover accident or side collisions, the following components will operate simultaneously
Impact sensors affectedSRS side airbags SRS curtain airbagsSeatbelt pretensioner
(shoulder belt pretensioner only)
Impacted sideNon-impacted
sideImpacted sideNon-impacted
sideImpacted sideNon-impacted
side
Both of the sen-
sors together
sense an impact
forceImpact sensor in
front doors
*–*–*–
Impact sensor
under rear cen-
ter seat
Both of the sen-
sors together
sense an impact
forceImpact sensor in
center pillars
*–*–––
Impact sensor
under rear cen-
ter seat
Both of the sen-
sors together
sense an impact
forceImpact sensor in
rear wheel
houses
––*–––
Impact sensor
under rear cen-
ter seat
Rollover sensor in airbag control
module––****
*: Activated
–: Not activated
NOTEThe SRS side airbag and SRS curtain airbag deploy even when no one occupies the seat on the side on which an impact is
applied.
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(88,1)
北米Model "A1700BE-B" EDITED: 2017/ 10/ 11
!In case of frontal collision
The SRS curtain airbags are designed to
deploy in the following cases.
.When the driver’s SRS frontal airbag
deploys in a frontal collision
.When the driver’s and front passen-
ger’s SRS frontal airbags deploy in a
frontal collision
.When the system determines that the
collision is an offset frontal collision
The SRS curtain airbags are basically
designed not to deploy in the following
cases.
.When the SRS frontal airbags do not
deploy
.When the system determines that the
collision is other than an offset frontal
collision
!After deployment
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 then
slowly deflates.
The SRS side airbag and SRS curtainairbag deploy even when no one occupies
the seat on the side on which an impact is
applied.
When the SRS side airbag and SRS
curtain airbag deploy, a sudden, fairly loud
inflation noise will be heard and some
smoke will be released. These occur-
rences are a normal result of the deploy-
ment. This smoke does not indicate a fire
in the vehicle.
CAUTION
Do not touch the SRS side airbag
system components around the
front seat seatback with bare hands
right after deployment. Doing so can
cause burns because the compo-
nents can be very hot as a result of
deployment.
After deployment, do not touch any
part of the SRS curtain airbag sys-
tem (from the front pillar to the part
of the roof side over the rear seat).
Doing so can cause burns because
the components can be very hot as a
result of deployment.
!Example of the type of accident
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 pro-
tect the occupant in those situations.)
The SRS curtain airbags are also de-
signed to deploy when the vehicle is in an
extremely inclined state such as during a
rollover. They are not designed to deploy in
most lesser inclined state.
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.
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北米Model "A1700BE-B" EDITED: 2017/ 10/ 11
!Example of the type of accident in
which the SRS side airbag will
most likely deploy.
A severe side impact near the front seat.
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(90,1)
北米Model "A1700BE-B" EDITED: 2017/ 10/ 11
!Examples of the types of accidents in which the SRS curtain airbag will most
likely deploy.
1) The vehicle is involved in a severe side
impact near the front seat or the rear seat.
2) The vehicle rolls onto its side or the roof.
3) The angle of vehicle tip-up is marginal or
the skidding vehicle’s tires hit a curbstone
laterally.
4) An offset frontal collision that is severe
enough to deploy the front airbag.
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(91,1)
北米Model "A1700BE-B" EDITED: 2017/ 10/ 11
!Examples of the types of accidents in which it is possible that the SRS side
airbag and the SRS curtain airbag will deploy.
1) Hitting a curb, edge of pavement or hard
surface
2) Falling into or jumping over a deep hole
3) Landing hard or vehicle fallingIt is possible that the SRS side and curtain
airbags will deploy if a serious impact
occurs to the underside of your vehicle.
Some examples are shown in the illustra-
tion.
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(92,1)
北米Model "A1700BE-B" EDITED: 2017/ 10/ 11
!Examples of the types of accidents in which the SRS side airbag is unlikely to
deploy.
1) The vehicle is involved in an oblique side-
on impact.
2) The vehicle is involved in a side-on
impact in an area outside the vicinity of
the passenger compartment.
3) The vehicle strikes a telephone pole or
similar object.
4) The vehicle is involved in a side-on
impact from a motorcycle.
5) The vehicle rolls onto its side or the roof.There are many types of collisions which
might not necessarily require the SRS side
airbag deployment. In the event of acci-
dents like those illustrated, the SRS side
airbag may not deploy depending on the
level of accident forces involved.
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(93,1)
北米Model "A1700BE-B" EDITED: 2017/ 10/ 11
!Examples of the types of accidents in which the SRS curtain airbag is unlikely
to deploy.
1) The vehicle is involved in an oblique side-
on impact.
2) The vehicle is involved in a side-on
impact in an area outside the vicinity of
the passenger compartment.
3) The vehicle strikes a telephone pole or
similar object.
4) The vehicle is involved in a side-on
impact from a motorcycle.There are many types of collisions which
might not necessarily require SRS curtain
airbag deployment. In the event of acci-
dents like those illustrated, the SRS
curtain airbag may not deploy depending
on the level of accident forces involved.
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(94,1)
北米Model "A1700BE-B" EDITED: 2017/ 10/ 11
!Examples of the types of acci-
dents in which the SRS side
airbag and SRS curtain airbag
are not designed to deploy in
most cases1) The vehicle is involved in frontal collision
with another vehicle (moving or station-ary).
2) The vehicle is struck from behind.
3) The vehicle pitches end over end.
In the event of accidents like those
illustrated, the SRS side airbag and SRS
curtain airbag are not designed to deploy
in most cases.1) First impact
2) Second impact
A) SRS curtain airbag
B) SRS side airbagIn an accident where the vehicle is struck
from the side more than once, the SRS
side airbag and SRS curtain airbag deploy
only once on the first impact.
Example: In the case of a double side
impact collision, first with one vehicle and
immediately followed by another from thesame direction, once the SRS side airbag
and SRS curtain airbag are activated on
the first impact, they will not be activated
on the second.
&SRS airbag system monitorsSRS airbag system warning lightA diagnostic system continually monitors
the readiness of the SRS airbag system
(including front seatbelt pretensioners)
while the vehicle is being driven. The
SRS airbag system warning light will show
normal system operation by illuminating
for approximately 6 seconds when the
ignition switch is turned to the“ON”
position.
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