2020 SUBARU BRZ ignition

104 1-7. Safety information
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■If the front passenger’s frontal airbag ON indicator illuminates and the
OFF indicator turns off even when an in fant or a small child is in a child
restraint system (including booster seat)
Turn the ignition switch to the “LOCK” position (vehicles without a keyless
access with push button start system), or turn the push-button ignition switch
off (vehicles with a keyless access with push button start system) if the front
passenger’s frontal airbag ON indicator illuminates and the OFF indicator
turns off even when an infant or a small child is in a child restraint system
(including booster seat). Remove the child restraint system from the seat. By
referring to the child restraint manufacturer’s recommendations as well as
the child restraint system installation procedures in “Child restraint systems”
( → P. 141), correctly install the child restraint system. Turn the ignition switch
to the “ON” position (vehicles without a keyless access with push button start
system), or turn the push-button ignition switch to the “ON” mode (vehicles
with a keyless access with push button start system) and make sure that the
front passenger’s frontal airbag ON indicator turns off and the OFF indicator
illuminates.
If still the ON indicator remains illuminated while the OFF indicator turns off,
take the following actions.
● Ensure that no article is placed on the seat other than the child restraint
system and the child occupant.
● Ensure that the backward-forward position and seatback of front passen-
ger’s seat are locked into place securely by moving the seat back and
forth.
If the ON indicator still remains illuminated while the OFF indicator turns off
after taking relevant corrective actions described above, relocate the child
restraint system to the rear seat and immediately contact your SUBARU
dealer for an inspection.
NOTE
When a child who has outgrown a child restraint system or a small adult is
seated in the front passenger’s seat, the SUBARU advanced frontal airbag
system may or may not activate the front passenger’s SRS frontal airbag
depending on the occupant’s seating posture. The child should always wear
the seatbelt when sitting in the seat irrespective of whether the airbag is
deactivated or activated. If the front passenger’s SRS frontal airbag is acti-
vated (the ON indicator remains illuminated while the OFF indicator turns
off), take the following actions.

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■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
This can be caused by the adult incorrectly sitting in the front passenger’s
seat. Turn the ignition switch to the “LOCK” position (vehicles without a key-
less access with push button start system), or turn the push-button ignition
switch off (vehicles with a keyless access with push button start system).
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, posi-
tion his/her legs out forward, and adjust the seat to the rearmost position.
Turn the ignition switch to the “ON” position (vehicles without a keyless
access with push button start system), or turn the push-button ignition switch
to the “ON” mode (vehicles with a keyless access with push button start sys-
tem). If the OFF indicator remains illuminated while the ON indicator remains
off, take the following actions.
●Vehicles without a keyless access with push button start system:
Turn the ignition switch to the “LOCK” position.
Vehicles with a keyless access with push button start system:
Turn the push-button ignition switch off.
● Make sure that the front passenger does not use a blanket, seat cushion,
seat cover, seat heater or massager, etc.
● 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.
● Next, 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 indicators turn off for 2 seconds. Now, the ON indicator should illu-
minate while the OFF indicator remains off.
If the OFF indicator still remains illuminated while the ON indicator remains
off, ask the occupant to move to the rear seat and immediately contact your
SUBARU dealer for an inspection.

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The SRS airbag can function only when the ignition switch is in the “ON”
position.
The SUBARU advanced frontal airbag syst
em is designed to determine the
activation or deactivation condition of the front passenger’s SRS frontal air-
bag depending on the characteristic of the item(s) or person on the front
passenger’s seat monitored by the front passenger’s occupant detection
system 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 sys-
tem.
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 infla-
tors. The two inflators of each air bag are triggered either sequentially or
simultaneously, 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 the item(s) or person on the seat in the case of the front
passenger’s SRS frontal airbag.
After deployment, the SRS airbag immediat ely starts to deflate so that the
driver’s vision is not obstructed. 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 passen-
ger’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 ability to maintain con-
trol of the vehicle.
When the SRS airbag deploys, a sudden, fa irly 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.

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■Operation
The SRS side airbag and SRS curtain airbag can function only when the
ignition switch is in the “ON” position.
The driver’s and front passenger’s SRS side airbags and SRS curtain air-
bags deploy independently of each other since each has its own impact sen-
sor. Therefore, 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 front airbags in the steering wheel and
instrument panel.
A rollover sensor is also located inside the airbag control module.
An impact sensor, which senses impact force, is located in each of the left
and right center pillars, doors and rear wheel houses. Another impact sen-
sor, which also senses impact force, is located under the center of the rear
seats.
If the impact sensor that is located under the center of the rear seats and
one of the center pillar impact sensors or door impact sensors together
sense an impact force above a predetermined level in a side collision, the
control module causes both the SRS side airbag and curtain airbag on the
impacted side to inflate regardless of whether the rear wheel house impact
sensor on the same side senses an impact.
If the impact sensor that is located under the center of the rear seats and
one of the rear wheel house impact sensors together sense an impact force
above a predetermined level, the control module causes only the SRS cur-
tain airbag on the impacted side to inflate.
If the rollover sensor detects rollover of the vehicle, the control module
inflates the SRS curtain airbags. At this time, the driver’s and front passen-
ger’s seatbelt pretensioners also operate at the same time.

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SRS airbag system monitors
A 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.
The following components are monitored by the indicator:
● Front sub sensor (right-hand side)
● Front sub sensor (left-hand side)
● Airbag control module (including impact sensors and rollover sen-
sors)
● Frontal airbag module (driver’s side)
● Frontal airbag module (front passenger’s side)
● Side airbag sensor (center pillar right-hand side)
● Side airbag sensor (center pillar left-hand side)
● Door impact sensor (right-hand side)
● Door impact sensor (left-hand side)
Vehicles with a monochrome multi-
information display
Vehicles with a color multi-information
display

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Side airbag module (driver’s side)
● Side airbag module (front passenger’s side)
● Curtain airbag sensor (rear wheel house right-hand side)
● Curtain airbag sensor (rear wheel house left-hand side)
● Curtain airbag module (right-hand side)
● Curtain airbag module (left-hand side)
● Satellite safing sensor (under the center of the rear seats)
● Seatbelt pretensioner (driver’s side)
● Seatbelt pretensioner (front passenger’s side)
● Seatbelt buckle switch (front passenger’s side)
● Front passenger’s occupant detection system sensor
● Front passenger’s occupant detection control module
● Front passenger’s frontal airbag ON and OFF indicator
● All related wiring
WARNING
■SRS warning light
If the warning light exhibits any of the following conditions, there may be a
malfunction in the seatbelt pretensioners, SRS airbag system and/or front
passenger occupant detection system. Immediately take your vehicle to your
nearest SUBARU dealer to have the system checked. Unless checked and
properly repaired, the seatbelt pret ensioners, SRS airbag system and/or
front passenger occupant detection system will not operate properly in the
event of a collision, which may increase the risk of injury.
● Flashing or flickering of the warning 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

132 1-7. Safety information
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The front passenger’s frontal airbag ON and OFF indicators show
you the status of the front passenger’s SRS frontal airbag. When
the engine switch is turned to the “ON” position, (vehicles without a
keyless access with push button start system), or the push-button
ignition switch is turned to “ON” mode (vehicles with a keyless
access with push button start system), both the ON and OFF indi-
cators illuminate for 6 seconds during the system check. After the
system check, both the ON and OFF indicators turn off for 2 sec-
onds. Then, either the ON or OFF indicator illuminates depending
on the condition of the front passenger’s frontal airbag.
When the OFF indicator remains off and ON indicator illuminates,
the front passenger’s frontal airbag may deploy during a collision.
When the OFF indicator illuminates and ON indicator remains off,
the front passenger’s frontal airbag does not deploy during a colli-
sion.
If the front passenger’s frontal airbag ON and OFF indicators
remain on when the engine switch is turned to the “ON” position
(vehicles without a keyless access with push button start system)
or the push-button ignition switch is turned to “ON” mode (vehicles
with a keyless access with push button start system), or the indica-
tors remain off after the system check, the system may be malfunc-
tioning. Have the vehicle inspected by your SUBARU dealer
immediately.
After that, one of the indicators illuminates depending on the status
of the front passenger’s SRS frontal airbag determined by the
SUBARU advanced frontal airbag monitoring system.

136 1-7. Safety information
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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
This can be caused by an adult incorrectly sitting in the front passen-
ger’s seat. Perform the following.Vehicles without a keyless access with push button start sys-
tem:
The engine switch is turned to the “LOCK” position.
Vehicles with a keyless access with push button start system:
Turn the push-button ignition switch off.
Ask the front passenger to set the seatback to the upright
position, sit up straight in the center of the seat cushion, cor-
rectly wear the seatbelt, position his/her legs out forward, and
adjust the seat to the rearmost position.
Vehicles without a keyless access with push button start sys-
tem:
The engine switch is turned to the “ON” position.
Vehicles with a keyless access with push button start system:
The push-button ignition switch is turned to “ON” mode.
If the OFF indicator remains illuminated while the ON indicator
remains off, perform the following.
• Vehicles without a keyless access with push button startsystem:
The engine switch is turned to the “LOCK” position.
Vehicles with a keyless access with push button start sys-
tem:
Turn the push-button ignition switch off.
• Make sure that the front passenger is not using a blanket, seat cushion, seat cover or seat heater, etc.
• If wearing excessive layers of clothing, the front passenger should remove any unnecessary items before sitting in the
front passenger seat, or should sit in a rear seat.
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STEP 2
STEP 3
STEP 4