belt SUBARU BRZ 2022 Service Manual

SRS Airbag (Supplemental Restraint System Airbag)
63
Seat, Seatbelt and SRS Airbags1
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WARNING
Do not put any objects (including
straps or cord) over the steering
wheel pad, column cover, or
dashboard.
- These objects could be entan-
gled with the steering wheel,
preventing the SRS frontal
airbag, etc. from operating
properly.- If the SRS frontal airbagdeploys, these objects could
be propelled inside the
vehicle, causing injury.
Do not put any objects under the
driver’s side of the instrument
panel. If the SRS knee airbag
deploys, those objects could
interfere with its proper operation
and could be propelled inside the
vehicle, causing injury.
WARNING
Do not attach accessories to the
windshield, or fit an extra-wide mir-
ror over the inside rear view mirror.
If the SRS airbag deploys, those
objects could become projectiles
that could seriously injure vehicle
occupants.
101940
WARNING
Do not attach accessories to the
door trim or near either SRS side
airbags and do not place objects
near the SRS side airbags. In the
event of SRS side airbag deploy-
ment, they could be propelled
dangerously toward the vehicle’s
occupants and cause injuries.
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SRS Airbag (Supplemental Restraint System Airbag)
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Seat, Seatbelt and SRS Airbags1
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For that reason, we strongly recom-
mend that ALL children (including
those in child restraint systems) sit
in the REAR seat properly
restrained at all times in a child
restraint device or in a seatbelt,
whichever is appropriate for the
child’s age, height and weight.Secure ALL types of child restraint
systems (including forward facing
child restraint system) in the REAR
seats at all times.According to accident statistics,
children are safer when properly
restrained in the rear seating posi-
tions than in the front seating posi-
tions.For instructions and precautions
concerning the child restraint sys-
tem, refer to "Chi ld Restraint Sys-
tems" 
P46.
WARNING
NEVER INSTALL A CHILD
RESTRAINT SYSTEM IN THE
FRONT SEAT. DOING SO RISKS
SERIOUS INJURY OR DEATH TO
THE CHILD BY PLACING THE
CHILD’S HEAD TOO CLOSE TO THE
SRS AIRBAG.
101999
WARNING
Never allow a child to stand up or
kneel on the front passenger’s seat.
The SRS airbag deploys with con-
siderable force and can injure or
even kill the child.
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SRS Airbag (Supplemental Restraint System Airbag)
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Seat, Seatbelt and SRS Airbags1
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■
Components1) Driver’s SRS frontal airbag
2) Front passenger’s SRS frontal airbag
3) SRS side airbag
4) SRS curtain airbag
5) SRS knee airbag
1
5
2
3
4
3
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The SRS airbags are stowed in the
following locations.
Driver’s SRS frontal airbag: in the
center portion of the steering wheel
An “SRS AIRBAG” mark is located on the
pad of the airbag.
Front passenger’s SRS frontal airbag:
near the top of the right side of dashboard
An “SRS AIRBAG” mark is located on the
right corner of the dashboard.
SRS side airbag: in the door side of each
front seat seatback
An “SRS AIRBAG” marks are located on
the door side of each front seat cushion.
SRS curtain airbag: in the roof side
(between the front pillar and a point over
the rear seat)
“SRS AIRBAG” marks are located at the
top of each center pillar.
SRS knee airbag: under the steering
column
An “SRS AIRBAG” mark is located at the
door of the airbag.
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SRS Airbag (Supplemental Restraint System Airbag)
68
120
2
3
4
6
14
9
7
5
10
11
13
12
8
15
21
22
23
17
16
19
18
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1) Front impact sensor (left-hand side)
2) Front impact sensor (right-hand side)
3) SRS airbag system warning light
4) Frontal airbag module (driver’s side)
5) Airbag control module (including impactsensor and rollover sensor)
6) Front passenger’s frontal airbag ON and OFF indicator
7) Frontal airbag module (front passenger’s side)
8) Seatbelt buckle switch (front passenger’s side)
9) Curtain airbag module (right-hand side)
10) Side impact sensor (door right-hand side)
11) Side airbag module (front passenger’s side)
12) Seatbelt pretensioner and adaptive force limiter (front passenger’s side)
13) Side impact sensor (center pillar right- hand side)
14) Airbag wiring
15) Side impact sensor (rear wheel house right-hand side)
16) Front passenger’s occupant detection system sensor
17) Side impact sensor (rear wheel house left-hand side)
18) Side airbag module (driver’s side)
19) Side impact sensor (center pillar left- hand side)
20) Seatbelt pretensi oner (driver’s side)
21) Side impact sensor (door left-hand side)
22) Knee airbag module (driver’s side)
23) Curtain airbag module (left-hand side)
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SRS Airbag (Supplemental Restraint System Airbag)
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Seat, Seatbelt and SRS Airbags1
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■
SUBARU Advanced Frontal
Airbag System, SRS Side
Airbag and SRS Curtain
Airbag
This vehicle is equipped with a SUBARU
advanced frontal airbag system that
complies 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
deployment force of the driver’s SRS
frontal airbag at the time of deployment as
well as whether or not to activate the front
passenger’s SRS frontal airbag and, if
activated, the deployment force of the
SRS frontal airbag at the time of deploy-
ment.This 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 th
at you carefully read
the instructions on the warning labels and
tag.
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 restraint
system.
This vehicle is equipped with a SUBARU
SRS curtain airbag system that complies
with the Federal Motor Vehicle Safety
Standard (FMVSS) No. 226.
For the locations of the SRS airbags, refer
to "Components" P67.
In a moderate to severe frontal collision,
the following components deploy.
 SRS frontal airbag for driver
 SRS frontal airbag for front passenger
 SRS curtain airbag*
 SRS knee airbag for driver
*: When an offset frontal collision that is
severe enough to deploy the front airbag
occurs.These components supplement the
seatbelts by reducing the impact to the
occupant’s head, chest and knees.
In a moderate to severe side impact colli-
sion, the SRS side airbag on the impacted
side of the vehicle deploys between the
occupant and the door panel and supple-
ments the seatbelt by reducing the impact
to the occupant’s chest and waist.
In a moderate to severe side impact colli-
sion, 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 to the occupant’s
head.NOTEThe SRS side airbag and seatbelt
pretensioner are not controlled by the
SUBARU advanced frontal airbag sys-
tem.
▼
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.
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SRS Airbag (Supplemental Restraint System Airbag)
70SRS airbag system warning lightHave the system inspected by your
SUBARU dealer immediately if the SRS
airbag system warning light illuminates.
▼
Front passenger’s SRS frontal
airbag
The front passenger’s SRS frontal airbag
uses a dual stage inflator. The inflator
operates in different ways depending on
the severity of impact.
1) Occupant detection sensorsThe occupant detection system sensors
are installed between the seat and seat
rails, and monitor the physique and
posture of the front passenger. Using this
information, the occupant detection
system determines whether the front
passenger’s SRS frontal airbag should be
deployed or not.
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. In this
case, although the front passenger’s SRS
frontal airbag does no t operate, the front
passenger’s seatbelt pretensioner oper-
ates with the driver’s seatbelt
pretensioner. For details about the seatbelt pretensioner, refer to "Seatbelt
Pretensioners"
P44.
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1
CAUTION
Observe the following precautions.
Failure to do so may prevent the
SUBARU advanced frontal airbag
system from functioning correctly
or cause the system to fail. Do not apply any strong impact to
the front passenger’s seat such
as by kicking.Do not let rear passengers rest
their feet between the front
seatback and seat cushion.Do not spill liquid on the front
passenger’s seat. If liquid is
spilled, wipe it off immediately.Do not remove or disassemble
the front passenger’s seat.Do not install any accessory
(such as an audio amplifier) other
than a genuine SUBARU acces-
sory under the front passenger’s
seat.Do not place anything (shoes,
umbrella, etc.) under the front
passenger’s seat.Do not place any objects (books,
etc.) around the front
passenger’s seat.
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SRS Airbag (Supplemental Restraint System Airbag)
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Seat, Seatbelt and SRS Airbags1
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SRS airbag system warning light
If the seatbelt buckle switch and/or front
passenger’s occupant detection system
have failed, the SRS airbag system
warning light will illuminate. Have the
system inspected by your SUBARU
dealer immediately if the SRS airbag
system warning light illuminates.
If your vehicle has sustained impact, this
may affect the proper function of the
SUBARU advanced frontal airbag system.
Have your vehicle inspected at your
SUBARU dealer. Do not use the front
passenger’s seat while driving the vehicle
to your SUBARU dealer.NOTEThe front passenger’s SRS side airbag
and SRS curtain airbag are not con- trolled by the SUBARU advanced fron-
tal airbag system.
▼
Passenger’s frontal airbag ON and
OFF indicators
: Front passenger’s frontal airbag ON indicator
: Front passenger’s frontal airbag OFF indicator
Refer to "Front Passenger’s Frontal
Airbag ON and OFF Indicators" P135.
 Do not use the front passenger’s
seat with the head restraint
removed.Do not leave any articles on the
front passenger’s seat or the
seatbelt tongue and buckle
engaged when you leave your
vehicle.Do not put sharp object(s) on the
seat or pierce the seat uphol-
stery.Do not place a magnet near the
seatbelt buckle and the seatbelt
retractor.Do not use front seats with their
backward-forward position and
seatback not being locked into
place securely. If any of them are
not locked securely, adjust them
again. For adjusting procedure,
refer to "Manual Seat" 
P33
(models equipped with manual
seats only).
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SRS Airbag (Supplemental Restraint System Airbag)
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Seat, Seatbelt and SRS Airbags1
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: Front passenger’s frontal airbag ONindicator
: Front passenger’s frontal airbag OFF indicator
If the front passenger’s frontal airbag ON
and OFF indicators do not work properly
even when the front passenger’s seat is
dry, do not allow anyone to sit on the front
passenger’s seat and have the occupant
detection system checked by your
SUBARU dealer. : Front passenger’s frontal airbag ON
indicator
: Front passenger’s frontal airbag OFF indicator
Also, if luggage or electronic devices are
placed on the front passenger’s seat, this
may adversely affect the ability of the
system to determine deployment. This
may prevent the front passenger’s frontal
airbag ON and OFF indicators from
working properly. Check that the indica-
tors work properly.
When the OFF indicator turns off and the
ON indicator illuminates, the front
passenger’s frontal airbag may deploy
during a collision. Remove luggage and
electronic devices from the front
passenger’s seat. ▼
Conditions in which front
passenger’s SRS frontal airbag is
not activated
The front passenger’s SRS frontal airbag
will not be activated when any of the
following conditions are met regarding the
front passenger’s seat:
 The seat is empty.
 The seat is equipped with an appro-
priate child restrain t system and an infant
or a child is restrained in it. (See
WARNING that follows.)
 The front passenger’s occupant detec-
tion system is malfunctioning.
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SRS Airbag (Supplemental Restraint System Airbag)
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Seat, Seatbelt and SRS Airbags1
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tions are met regarding the front
passenger’s seat.
When the seat is occupied by an adult.
 When certain items (e.g. jug of water)
are placed on the seat. ▽
If the passenger’s frontal airbag
OFF indicator illuminates and
the ON indicator turns off even
when the front passenger’s seat
is occupied by an adult
: Front passenger’s frontal airbag ON indicator
: Front passenger’s frontal airbag OFF indicator
This can be caused by the adult incor-
rectly sitting in the front passenger’s seat.
1. Turn the ignition switch to the “OFF”
position.
2. Ask the front passenger to set the
seatback to the upright position, sit up
straight in the center of the seat cushion,
correctly fasten the seatbelt, position his/ her legs out forward, and adjust the seat
to the rearmost position.
3. Turn the ignition switch to the “ON”
position.
If the OFF indicator remains illuminated
while the ON indicator remains off, take
the following actions.
1. Turn the ignition switch to the “OFF”
position.
2. Make sure that the front passenger
does not use a blanket, extra seat
cushion, seat cover, extra seat heater or
massager, etc.
3. If wearing excessive layers of clothing,
the front passenger should remove any
unnecessary items before sitting in the
front passenger’s seat, or should sit in a
rear seat.
4. Turn the ignition switch to the “ON”
position and wait 6 seconds to allow the
system to complete self-checking.
Following the system check, both indica-
tors turn off for 2 seconds. Now, the ON
indicator should illuminate while the OFF
indicator remains off.
If the OFF indicator still remains illumi-
nated while the ON indicator remains off,
ask the occupant to move to the rear seat
and immediately contact your SUBARU
dealer for an inspection.
CAUTION
When the front passenger's seat is
occupied by an adult, observe the
following precautions.Failure to do so may lessen the load
on the front passenger's seat, deac-
tivating the fron
t passenger's SRS
frontal airbag despite the fact that
the seat is occupied by an adult.This may result in personal injury. Do not allow the rear seat occu-
pant to lift the front passenger's
seat cushion using his/her feet.Do not place any article under the
front passenger's seat, or
squeeze any article from behind
and under the seat.Do not squeeze any article
between the front passenger's
seat and side trim/pillar, door or
center console box. This may lift
the seat cushion.
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SRS Airbag (Supplemental Restraint System Airbag)
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Seat, Seatbelt and SRS Airbags1
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The front impact sensors
 The impact sensors in the airbag
control module
On the driver’s side, the SRS knee airbag
also inflates with the SRS frontal airbag.
The driver’s and front passenger’s SRS
frontal airbags use dual stage inflators.
The two inflators of each airbag are trig-
gered either sequentially or simultane-
ously, 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 characteristic of
item(s) or person on the seat in the case
of the front passenger’s SRS frontal
airbag.
▼
After deployment
After deployment, the SRS airbag immedi-
ately starts to deflate so that the driver’s
vision is not obstructed and the driver’s
ability to maintain control of the vehicle is
not impaired. The time required from
detecting impact to the deflation 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. When the SRS airbag deploys, a sudden,
fairly loud inflation noise will be heard and
some smoke will be released. These
occurrences are a normal result of the
deployment. This smoke does not indicate
a fire in the vehicle.
▼
Example of the type of accident
The driver’s SRS frontal airbag and front
passenger’s SRS frontal airbag are
designed as follows.
 To deploy in the event of an accident
involving a moderate to severe frontal
collision
 To function on a one-time-only basis
The driver’s SRS frontal airbag and front
passenger’s SRS frontal airbag are not
designed as follows.
 To deploy in most lesser frontal
impacts
*1
 To deploy in most side or rear impacts
or in most rollover accidents
*2
*1: Because the necessary protection can be achieved by the seatbelt alone.
*2: Because deployment of only the driver’s SRS frontal airbag or both the driver’s and
front passenger’s SRS frontal airbags would
not protect the occupant in those situations.SRS airbag deployment depends on the
level of force experienced in the
passenger compartment during a colli-
sion. 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.
CAUTION
Do not touch the SRS airbag system
components around the steering
wheel and dashboard with bare
hands right after deployment. Doing
so can cause burns because the
components can be very hot as a
result of deployment.
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