sensor SUBARU IMPREZA WRX 2013 4.G Owners Manual

24
Function settings
A SUBARU dealer can change the settings of the functions shown in the following table to meet your personal requirements. Contact
the nearest SUBARU dealer for details.Item Function Possible settings Default setting Page
Alarm system Alarm system Operation/Non-operation Operation 2-15
Monitoring start delay time (after
closure of doors)0 second/30 seconds 30 seconds 2-16
Impact sensor operation (only models
with shock sensors (dealer option)) Operation/Non-operation Non-operation 2-19
Passive arming Operation/Non-operation Non-operation 2-18
Dome light and map lights illumination
(models with moonroof) ON/OFF OFF 2-15
Dome light illumination
(models without moonroof)
Remote keyless entry system Hazard warning flasher Operation/Non-operation Operation 2-7 Audible signal Operation/Non-operation Operation 2-10
Key lock-in prevention Key lock-in prevention Operation/Non-operation Operation 2-7
Remote engine start system
(dealer option) Horn chirp confirmation ON/OFF ON 7-12
Defogger and deicer system for models
with the automatic climate control system Rear window defogger, outside mirror
defogger and windshield wiper deicerOperation for 15 minutes/
Continuous operationOperation for 15 minutes 3-46
Dome light Operation of dome light/map light OFF delay timerOFF/Short/Normal/Long Long 6-2, 6-3
Map light for models with a moonroof
Battery drainage prevention function Battery drainage prevention function Operation/Non-operation Operation 2-5
Seatbelt warning Sounds a chime while driving Operation/Non-operation Operation 3-13

CAUTION
. Do not allow the retractor to roll
up the seatbelt too quickly.
Otherwise, the metal tongue
plates may hit against the trim,
resulting in damaged trim.
. Have the seatbelt fully rolled up
so that the tongue plates are
neatly stored. A hanging tongue
plate can swing and hit against
the trim during driving, causing
damage to the trim. &
Seatbelt maintenance
To clean the seatbelts, use a mild soap
and lukewarm water. Never bleach or dye
the belts because this could seriously
affect their strength.
Inspect the seatbelts and attachments
including the webbing and all hardware
periodically for cracks, cuts, gashes,
tears, damage, loose bolts or worn areas.
Replace the seatbelts even if only minor
damage is found.
CAUTION
. Keep the belts free of polishes,
oils, chemicals and particularly
battery acid.
. Never attempt to make modifica-
tions or changes that will prevent
the seatbelt from operating prop-
erly. Front seatbelt pretensioners
The driver
’s and front passenger ’s seat-
belts have a seatbelt pretensioner. The
seatbelt pretensioners are designed to be
activated in the event of an accident
involving a moderate to severe frontalcollision.
The pretensioner sensor also serves as
the frontal SRS airbag sensor. If the
sensor detects a certain predetermined
amount of force during a frontal collision,
the front seatbelt is quickly drawn back in
by the retractor to take up the slack so that
the belt more effectively restrains the front
seat occupant.
When a seatbelt pretensioner is activated,
an operating noise will be heard and a Seat, seatbelt and SRS airbags
1-19
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system inoperative, which may
result in serious injury. Do not
use electrical test equipment on
any circuit related to the seatbelt
pretensioner and SRS airbag
systems. For required servicing
of the seatbelt pretensioner, con-
sult your nearest SUBARU deal-
er.
CAUTION
The front sub sensors are located
on both the right and left sides at the
front of the vehicle, and the SRS
airbag control module including the
impact sensors is located under the
center console. If you need service
or repair in those areas or near the
front seatbelt retractors, have the
work performed by your authorized
SUBARU dealer.
NOTE
If the front part of the vehicle is
damaged in an accident to the extent
that the seatbelt pretensioner does not
operate, contact your SUBARU dealer
as soon as possible. &
Precautions against vehicle modification
Always consult your SUBARU dealer if
you want to install any accessory parts to
your vehicle.
CAUTION
Do not perform any of the following
modifications. Such modifications
can interfere with proper operation
of the seatbelt pretensioners. . Attachment of any equipment
(bush bar, winches, snow plow,
skid plate, etc.) other than genu-
ine SUBARU accessory parts to
the front end.
. Modification of the suspension
system or front end structure.
. Installation of a tire of different
size and construction from the
tires specified on the vehicle
placard attached to the driver ’s
door pillar or specified for indivi-
dual vehicle models in this Own-er ’s Manual. Child restraint systems
Infants and small children should always
be placed in an infant or child restraint
system in the rear seat while riding in the
vehicle. You should use an infant or child
restraint system that meets Federal Motor
Vehicle Safety Standards or Canada
Motor Vehicle Safety Standards, is com-
patible with your vehicle and is appro-
priate for the child
’s age and size. All child
restraint systems are designed to be
secured in vehicle seats by lap belts or
the lap belt portion of a lap/shoulder belt
(except those described in “Installation of
child restraint systems by use of lower and
tether anchorages (LATCH) ”F 1-29).
Children could be endangered in an
accident if their child restraints are not Seat, seatbelt and SRS airbags
1-21
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1-42Seat, seatbelt and SRS airbags
1) Airbag control module (including impact
sensors)
2) Frontal airbag module (driver ’s side)
3) Frontal airbag module (front passenger ’s
side)
4) Front sub sensor (left-hand side)
5) Front sub sensor (right-hand side) 6) Side airbag module (driver
’s side)
7) Side airbag module (front passenger ’s
side)
8) Side airbag sensor (center pillar left-hand side)
9) Side airbag sensor (center pillar right- hand side)
10) Airbag wiring 11) Seatbelt pretensioner (driver
’s side)
12) Seatbelt pretensioner (front passenger ’s
side)
13) Curtain airbag sensor (rear wheel house right-hand side)
14) Curtain airbag sensor (rear wheel house left-hand side)
15) Curtain airbag module (right side)
16) Curtain airbag module (left side)
17) Seatbelt buckle switch (front passenger ’s
side)
18) Front passenger ’s seatbelt tension sen-
sor
19) Front passenger ’s occupant detection
system weight sensor
20) Front passenger ’s occupant detection
control module
21) Front passenger ’s frontal airbag ON and
OFF indicator
22) SRS airbag system warning light
23) Satellite safing sensor (under the rear center seat)

&SUBARU advanced frontal
airbag system, SRS side air-
bag and SRS curtain airbag
Your vehicle is equipped with a SUBARU
advanced frontal airbag system that com-
plies with the new advanced frontal airbag
requirements in the amended Federal
Motor Vehicle Safety Standard (FMVSS)
No. 208.
The SUBARU advanced frontal airbag
system automatically determines the de-
ployment force of the driver ’s SRS frontal
airbag at the time of deployment as well as
whether or not to activate the frontpassenger ’s SRS frontal airbag and, if
activated, the deployment force of the
SRS frontal airbag at the time of deploy-ment.
Your vehicle has warning labels on the driver ’s and front passenger ’s sun visors
beginning with the phrase “EVEN WITH
ADVANCED AIR BAGS ”and a tag
attached to the glove box lid beginning
with the phrase “Even with Advanced Air
Bags ”. Make sure that you carefully read
the instructions on the warning labels andtag.
Always wear your seatbelt. The SUBARU
advanced frontal airbag system is a
supplemental restraint system and must
be used in combination with a seatbelt. All occupants should wear a seatbelt or be
seated in an appropriate child restraintsystem.
For the locations of the driver
’sSRS
frontal airbag, front passenger ’sSRS
frontal airbag, SRS side airbag and SRS
curtain airbag, refer to “Components ”F 1-
41.
In a moderate to severe frontal collision,
the driver ’s and front passenger ’s SRS
frontal airbags deploy and supplement the
seatbelts by reducing the impact on thedriver ’s and front passenger ’s head and
chest.
In a moderate to severe side impact
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.
In a moderate to severe side impact
collision, the SRS curtain airbag on the
impacted side of the vehicle deploys
between the occupant and the side
window and supplements the seatbelt by
reducing the impact on the occupant ’s
head.
NOTE
The SRS side airbag, SRS curtain air-
bag and seatbelt pretensioner are not controlled by the SUBARU advanced
frontal airbag system. !
Driver ’s SRS frontal airbag
The driver ’s SRS frontal airbag uses a
dual stage inflator. The inflator operates in
different ways depending on the severity
of impact.
Have the system inspected by your
SUBARU dealer immediately if the SRS
airbag system warning light illuminates. ! Front passenger ’s SRS frontal air-
bag
The front passenger ’s SRS frontal airbag
uses a dual stage inflator. The inflator
operates in different ways depending on
the severity of impact.
The total load on the seat is monitored by
the occupant detection system ’s weight
sensor located under the seat.
The system has another sensor that
monitors the tension of the front passen-
ger seatbelt. Using the total seat load and
seatbelt tension data from the sensors,
the occupant detection system determines
whether the front passenger ’s SRS frontal
airbag should or should not be inflated.
The occupant detection system may not
inflate the front passenger ’s SRS frontal
airbag even when the driver ’s SRS frontal
airbag deploys. This is normal. Seat, seatbelt and SRS airbags
1-43
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1-48Seat, seatbelt and SRS airbags
! SRS frontal airbag operation
A) Driver ’s side
B) Passenger ’s side
1) SRS AIRBAGs deploy as soon as a collision occurs.
2) After deployment, SRS AIRBAGs start to deflate immediately so that the driver ’s vision is not
obstructed. The SUBARU advanced frontal airbag
system is designed to determine the
activation or deactivation condition of the
front passenger
’s SRS frontal airbag
depending on the total load on the frontpassenger ’s seat monitored by the front
passenger ’s occupant detection system
weight sensor. For this reason, only thedriver ’s SRS frontal airbag may deploy in
the event of a collision, but this does not
mean failure of the system.
If the front sub sensors and the impact
sensors in the airbag control module
detect a predetermined amount of force
during a frontal collision, the control
module sends signals to the airbag
module(s) (only driver ’s module or both
driver ’s and front passenger ’s modules)
instructing the module(s) to inflate the
SRS frontal airbag(s). The driver ’s and
front passenger ’s SRS frontal airbags use
dual stage inflators.
The two inflators of each airbag are
triggered either sequentially or simulta-
neously, depending on the severity of
impact, in the case of the driver ’s SRS
frontal airbag and depending on the
severity of impact and the total load on
the seat in the case of the front passen-ger ’s SRS frontal airbag.

1-52Seat, seatbelt and SRS airbags
! Examples of the types of accidents
in which the driver ’s/driver ’s and
front passenger ’s SRS frontal
airbag(s) is/are not designed to
deploy in most cases
The driver ’s and front passenger ’s SRS frontal airbags are designed not to deploy
in most cases 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 firstimpact.
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 operation
The driver ’s and front passenger ’s SRS
side airbags and SRS curtain airbags
deploy independently of each other since
each has its own impact sensor. There-
fore, they may not both deploy in the same
accident. Also, the SRS side airbag and
SRS curtain airbag deploys independently
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 the following locations. . In each of the left and right center
pillars. In each of the rear wheel houses

.Under the rear center seat
The airbag control module causes both the SRS side airbag andSRS curtain
airbag on the impacted side to inflate if
both of the following sensors together
sense an impact force above a predeter-
mined level in a side collision. . One of the center pillar impact sensors
. Impact sensor that is located under the
rear center seat
The airbag control module causes only the
SRS curtain airbag on the impacted side
to inflate if both of the following sensors
together sense an impact force above a
predetermined level in a side collision. . One of the rear wheel house impact
sensors. Impact sensor that is located under the
rear center seat
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 curtain airbag deploy even when no one occupies
the seat on the side on which an impact isapplied.
The SRS side airbag and SRS curtain
airbag are designed to deploy in the event
of an accident involving a moderate to
severe side impact collision. They are not
designed to deploy in most lesser side
impacts. Also, they are not designed to
deploy in most frontal or most rear impacts
because SRS side airbag and SRS
curtain airbag deployment would not help
the occupant in those situations.
Each SRS side airbag and SRS curtain
airbag are designed to function on a one-
time-only basis.
SRS side airbag and SRS curtain airbag
deployment depend on the level of force
experienced in the passenger compart-
ment 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 vehicleitself.
!
Example of the type of accident in
which the SRS side airbag and SRS
curtain airbag will most likely de-ploy
A severe side impact near the front seat
activates the SRS side airbag and SRS
curtain airbag. Seat, seatbelt and SRS airbags
1-53
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1-56Seat, seatbelt and SRS airbags
The following components are monitored
by the indicator: .Front sub sensor
– Right-hand side
– Left-hand side
. Airbag control module (including im-
pact sensors). Frontal airbag module
– Driver ’s side
– Front passenger ’s side
. Side airbag sensor
– Center pillar right-hand side
– Center pillar left-hand side
. Side airbag module
– Driver ’s side
– Front passenger ’s side
. Curtain airbag sensor
– Rear wheel house right-hand side
– Rear wheel house left-hand side
. Curtain airbag module
– Right-hand side
– Left-hand side
. Satellite safing sensor (under the rear
center seat). Seatbelt pretensioner
– Driver ’s side
– Front passenger ’s side
. Seatbelt buckle switch (front passen-
ger ’s side)
. Front passenger ’s seatbelt tension sensor.
Front passenger ’s occupant detection
system weight sensor. Front passenger ’s occupant detection
control module. Front passenger ’s frontal airbag ON
and OFF indicator. All related wiring
WARNING
If the warning light exhibits any of
the following conditions, there may
be a malfunction in the seatbelt
pretensioners and/or SRS airbag
system. Immediately take your vehi-
cle to your nearest SUBARU dealer
to have the system checked. Unless
checked and properly repaired, the
seatbelt pretensioners and/or SRS
airbag will not operate properly in
the event of a collision, which may
increase the risk of injury. . Flashing or flickering of the warn-
ing light
. No illumination of the warning
light when the ignition switch is
first turned to the “ON ”position
. Continuous illumination of the
warning light
. Illumination of the warning light while driving
& SRS airbag system servicing
WARNING
. When discarding an airbag mod-
ule or scrapping the entire vehi-
cle damaged by a collision, con-
sult your SUBARU dealer.
. The SRS airbag has no user-
serviceable parts. Do not use
electrical test equipment on any
circuit related to the SRS airbag
system. For required servicing of
the SRS airbag, consult your
nearest SUBARU dealer. Tamper-
ing with or disconnecting thesystem ’s wiring could result in
accidental inflation of the SRS
airbag or could make the system
inoperative, which may result in
serious injury.
CAUTION
If you need service or repair in areas
indicated in the following list, have
the work performed by an author-
ized SUBARU dealer. The SRS air-

bag control module, impact sensors
and airbag modules are stored in
these areas. .Under the center console
. On both the right and left sides at
the front of the vehicle
. Steering wheel and column and
nearby areas
. Top of the dashboard on front
passenger ’ssideandnearby
areas
. Each front seat and nearby area
. Inside each center pillar
. In each roof side (from the front
pillar to a point over the rear seat)
. Between the rear seat cushion
and rear wheel house on each side
. Under the rear center seat
In the event that the SRS airbag is
deployed, replacement of the system
should be performed only by an author-
ized SUBARU dealer. When the compo-
nents of the SRS airbag system are
replaced, use only genuine SUBARUparts. NOTE
In the following cases, contact your
SUBARU dealer as soon as possible. .
The front part of the vehicle was
involved in an accident in which only
the driver ’s SRS frontal airbag or both
driver ’s and front passenger ’sSRS
frontal airbags did not deploy.. The pad of the steering wheel, the
cover over the front passenger ’s SRS
frontal airbag, or either roof side (from
the front pillar to a point over the rear
seat) is scratched, cracked, or other-
wise damaged.. Center pillar, rear wheel house or
rear sub frame, or an area near these
parts, was involved in an accident in
which the SRS side airbag and SRS
curtain airbag did not deploy.. The fabric or leather of either front
seatback is cut, frayed, or otherwisedamaged.. The rear part of the vehicle was
involved in an accident in which no
SRS airbag was deployed. &
Precautions against vehicle modification
WARNING
To avoid accidental activation of the
system or rendering the system
inoperative, which may result in
serious injury, no modifications
should be made to any components
or wiring of the SRS airbag system.
This includes following modifica- tions. . Installation of custom steering
wheels
. Attachment of additional trim
materials to the dashboard
. Installation of custom seats
. Replacement of seat fabric or
leather
. Installation of additional fabric or
leather on the front seat
. Attachment of a hands-free mi-
crophone or any other accessory
to a front pillar, a center pillar, a
rear pillar, the windshield, a side
window, an assist grip, or any
other cabin surface that would be
near a deploying SRS curtainairbag.
Seat, seatbelt and SRS airbags
1-57
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