2006 SUBARU LEGACY sensor

21
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 deta ils. If your vehicle is equipped with navigation system, the settings for some of these funct ions can
be changed using the monitor. For details, please refer to the Owner’s Manual supplement for the monitor.
Item Function Possible settings Default setting Page
Alarm system Alarm system Operation / Non-operation Operation 2-14 Monitoring start delay time (after closure of
doors) 0 second / 30 seconds 30 seconds 2-16
Impact sensor operatio n (only vehicles
with shock sensors (dealer option)) Operation / Non-operation Non-operation 2-18
Passive arming Operation / Non-operation Non-operation 2-17
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 2-6
Rear window defogger Rear window defogger Operation for 15 min. / Continuous opera- tionOperation for
15 min.3-38
Windshield wiper deicer (if
equipped) Windshield wiper deicer Operation
for 15 min. / Continuous opera-
tion Operation for
15 min.3-38
Dome light Operation in interlock with remote keyless entry system OFF / Short / Normal / Long Normal 6-2
Battery drainage prevention func-tion Battery drainage prevention function Operation / Non-operation Operation 2-6

Seat, seatbelt and SRS airbags 1-21
– CONTINUED –
„Seatbelt maintenance
To clean the seatbelts, use a mild soap
and lukewarm water. Never bleach or dye
the belts because this could seriously af- fect their strength.
Inspect the seatbelts and attachments in-
cluding the webbing and all hardware pe-
riodically for cracks, cuts, gashes, tears,
damage, loose bolts or worn areas. Re-
place the seatbelts even if only minor
damage is found.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 in-
volving a moderate to severe frontal colli- sion.
The pretensioner sensor also serves as a
SRS frontal 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 re-
tractor to take up the slack so that the beltmore effectively rest rains the front seat
occupant.
When a seatbelt pretensioner is activated,
y
Do not allow the retractor to roll
up the seatbelt too quickly. Other-
wise, the metal tongue plates may
hit against the trim, resulting in
damaged trim.
y Have the seatbelt fully rolled up
so that the tongue plates are neat-
ly stored. A hanging tongue plate
can swing and hit against the trim
during driving, causing damage to the trim.
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yKeep the belts free of polishes,
oils, chemicals and particularly
battery acid.
y Never attempt to make modifica-
tions or changes that will prevent
the seatbelt from operating prop-erly.
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Seat, seatbelt and SRS airbags 1-23
– CONTINUED –
operation by lighting
for approximately 6
seconds when the ignition switch is turned
to the “ON” position.
The following components are monitored
by the indicator: y Front sub sensor (Right-hand side)
y Front sub sensor (Left-hand side)
y Airbag control module (including impact
sensors)y Frontal airbag module (Driver’s side)
y Frontal airbag module (Front passen-
ger’s side)y Side airbag sensor (Center pillar right-
hand side)y Side airbag sensor (Center pillar left-
hand side)y Side airbag module (Driver’s side)
y Side airbag module (Front passenger’s
side)y Curtain airbag sensor (Rear wheel
house right-hand side)y Curtain airbag sensor (Rear wheel
house left-hand side) y Curtain airbag module (Right side)
y Curtain airbag module (Left side)
y Seatbelt pretensioner (Driver’s side)
y Seatbelt pretensioner (Front passen-
ger’s side) y Seatbelt buckle switch (Driver’s side)
y Seatbelt buckle switch (Front passen-
ger’s side)y Driver’s seat position sensor y
Front passenger’s seatbelt tension sen-
sory Front passenger’s occupant detection
system weight sensor y Front passenger’s occupant detection
control module y Front passenger’s frontal airbag ON
and OFF indicatory All related wiring
„ System servicing
If the warning light exhibits any of
the following conditions, there may
be a malfunction in the seatbelt pre-
tensioners and/or SRS airbag sys-
tem. Immediately take your vehicle
to your nearest SUBARU dealer to
have the system checked. Unless
checked and properly repaired, the
seatbelt pretensioners and/or SRS
airbags will operate improperly (e.g.
SRS airbags may inflate in a very mi-
nor collision or not inflate in a se-
vere collision), which may increase
the risk of injury.
yFlashing or flickering of the warn-
ing light
yNo illumination of the warning
light when the ig nition switch is
first turned to the “ON” position
y Continuous illumination of the
warning light
yIllumination of the warning light
while driving
yWhen discarding a seatbelt retrac-
tor assembly or scrapping the en-
tire vehicle damaged by a colli-
sion, consult yo ur SUBARU deal-
er.

1-24 Seat, seatbelt and SRS airbags
NOTE
If the front part of the vehicle is dam-
aged in an accident to the extent that
the seatbelt pretensioner does not op-
erate, 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.y Tampering with or disconnecting
the system’s wiring could result in
accidental activation of the seat-
belt pretensioner and/or airbag or
could make the system inopera-
tive, which may result in serious
injury. The wiring harnesses of
the seatbelt pretensioner and SRS
airbag systems are covered with
yellow insulation and the connec-
tors of the system are yellow for
easy identification. Do not use
electrical test equipment on any
circuit related to the seatbelt pre-
tensioner and airbag systems. For
required servicing of the seatbelt
pretensioner, see your nearest
SUBARU dealer.
The front sub sensors are located in
both front fenders and the airbag
control module including the impact
sensors is located under the center
console. If you need service or re-
pair in those areas or near the front
seatbelt retractors, have an autho-
rized SUBARU dealer perform the
work.
Do not perform any of the following
modifications. Such modifications
can interfere with proper operation
of the seatbelt pertensioners. y Attachment of any equipment
(bush bar, winches, snow plow,
skid plate, etc.) other than genu-
ine SUBARU accessory parts to
the front end.
y Modification of the suspension
system or front end structure.
yInstallation of a tire of different
size and construction from the
tires specified on the vehicle plac-
ard attached to the door pillar or
specified for individual vehicle
models in this Owner’s Manual.

Seat, seatbelt and SRS airbags 1-41
– CONTINUED –
TComponents
Sedan
1
2
3
4
5
6 18
19 24
23
8
11
13
14
16
15 21
22
9
7 10
12
20
17
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1) Airbag control module (including impact sensors)
2) Frontal airbag module (driver’s side)
3) Frontal airbag module (front passen-
ger’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 (yellow)
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 passen- ger’s side)
18) Seatbelt buckle switch (driver’s side)
19) Driver’s seat position sensor
20) Front passenger’s seatbelt tension sen-
sor
21) Front passenger’s occupant detection system weight sensor
22) Front passenger’s occupant detection
control module
23) Front passenger’s frontal airbag ON and OFF indicator
24) SRS airbag system warning light

1-42 Seat, seatbelt and SRS airbags
Station wagon
1
2
3
4
5
13
6
18
19 24
23
8
11
14
15
16
21
22
9
7 10
12
20
17
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1) Airbag control module (including impact sensors)
2) Frontal airbag module (driver’s side)
3) Frontal airbag module (front passen-
ger’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 (yellow)
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 passen- ger’s side)
18) Seatbelt buckle switch (driver’s side)
19) Driver’s seat position sensor
20) Front passenger’s seatbelt tension sen- sor
21) Front passenger’s occupant detection system weight sensor
22) Front passenger’s occupant detection
control module
23) Front passenger’s frontal airbag ON and OFF indicator
24) SRS airbag system warning light

Seat, seatbelt and SRS airbags 1-45
– CONTINUED –
TDriver’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, backward-forward adjustment
of the driver’s seat position and whether or
not he/she is wearing the seatbelt.
The backward-forward adjustment of the
driver’s seat position is monitored by the
driver’s seat position sensor under the driver’s seat.
Whether or not the driver is wearing the
seatbelt is monitored by the seatbelt buck-le switch.
Observe the following precautions. Failure
to do so may cause the seatbelt buckle
switch and/or the seat position sensor to
malfunction, preventing the Subaru ad-
vanced frontal airbag system from func-
tioning correctly or causing the system to fail. y
Do not place articles/metal objects or in-
stall any accessory other than a genuine
SUBARU accessory under the driver’s
seat. Do not allow the rear seat occupant
to kick the driver’s seat or push up its bot-
tom surface with his/her feet. y Do not place a magnet near the seatbelt
buckle or under the driver’s seat.
If the seatbelt buckle switch and/or the
driver’s seat position sensor have failed,
the SRS airbag system warning light will il-
luminate. Although the driver’s SRS fron-
tal airbag can deploy regardless of the
backward-forward adjustment of the driv-
er’s seat position even when the warning
light is on, have th e system inspected by
your SUBARU dealer immediately if the
SRS airbag system warning light comes
on.
NOTE
The driver’s SRS si de airbag, SRS cur-
tain airbag and seatbelt pretensioner
are not controlled by the Subaru ad-
vanced frontal airbag system. T Front passenger’s SRS frontal air-
bag
The front passenger’s SRS frontal airbag
uses a dual stage inflator. The inflator op-
erates in different ways depending on the
severity of impact.
The total load on the seat is monitored by
the passenger’s occupant detection sys-
tem weight sensor under the seat.
The system has another sensor that mon-
itors the tension of the front passenger
seatbelt. Using the total seat load and
seatbelt tension data from the sensors,
the occupant detection system deter-
mines whether the front passenger’s SRS
frontal airbag should or should not be in-
flated. The occupant detecti on system may not
inflate the front passenger’s SRS frontal
airbag even when the driver’s SRS frontal
airbag deploys. This is normal.
Observe the following precautions. Failure
to do so may prevent the Subaru ad-
vanced frontal airbag system from func-
tioning correctly or cause the system to fail.
Do not attach accessories to the
windshield, or fit an extra-wide mir-
ror over the rear vi ew mirror. If the
SRS airbag deploys, those objects
could become projectiles that could
seriously injure vehicle occupants.
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1-50 Seat, seatbelt and SRS airbags
TOperation
1) Driver’s side
2) Passenger’s side
The SRS airbag can function only when
the ignition switch is in the “ON” position.
The Subaru advanced frontal airbag sys- tem is designed to determine the activa-
tion or deactivation condition of the front
passenger’s SRS frontal airbag depend-
ing on the total load on the front passen-
ger’s seat monitored
by the front passen-
ger’s occupant detection system weight
sensor. For this reason, only the driver’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 inside both front
fenders and the impact sensors in the air-
bag control module detect a predeter-
mined amount of force during a frontal col-
lision, 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 in-
flate the SRS frontal airbag(s). The driv-
er’s and front passenger’s SRS frontal air-
bags use dual stage inflators. The two in-
flators of each airbag are triggered either
sequentially or simultaneously, depending
on the severity of impact, backward-for-
ward adjustment of the driver’s seat posi-
tion and fastening/unfas tening of the seat-
belt 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 passenger’s SRS frontal
airbag. After deployment, the SRS airbag
immediately starts to deflate so that the driver’s vision is not obstructed. The time
required from detecting impact to the de-
flation of the SRS airbag after deployment
is shorter than the blink of an eye.
Both when only the driver’s SRS frontal
airbag deploys and the driver’s and front
passenger’s SRS frontal airbags deploy,
the driver’s and front passenger’s seatbelt
pretensioners operate at the same time.
Although it is highly unlikely that the SRS
airbag would activate in a non-accident
situation, should it occur, the SRS airbag
will deflate quickly, not obscuring vision
and will not interfere with the driver’s abil-
ity to maintain control of the vehicle.
When the SRS airbag deploys, a sudden,
fairly loud inflation noise will be heard and
some smoke will be released. These oc-
currences are a normal result of the de-
ployment. This smoke does not indicate a
fire in the vehicle.
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