sensor SUBARU BRZ 2020 Owners Manual

26 1-2. Opening, closing and locking the doors and trunk lid
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Unlocking and locking the doorsGrip the driver’s door handle to
unlock the door. Grip the passen-
ger’s door handle to unlock all
the doors.
Make sure to touch the sensor on
the back of the handle.
The doors cannot be unlocked for
3 seconds after the door is
locked.
Touch the lock sensor (the
indentation on the side of the
door handle) to lock the doors.
Check that the door is securely
locked.
Unlocking the trunk lidPress the button to unlock the
trunk lid.

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■
Operation signals
A buzzer sounds and the hazard warning flashers flash to indicate that the
doors have been locked/unlocked. (Locked: once; Unlocked: twice)
■ When the door cannot be locked by the lock sensor
■ Door lock buzzer
If an attempt to lock the doors is made when a door is not fully closed, a
buzzer sounds continuously. Fully close the door to stop the buzzer, and lock
the vehicle once more.
■ Alarms and warning indicators
A combination of exterior and interior alarms as well as warning messages
shown on the multi-information display are used to prevent theft of the vehi-
cle and accidents resulting from erroneous operation. Take appropriate mea-
sures in response to any warning message on the multi-information display.
(→ P. 438, 442)
The following table describes circumstances and correction procedures
when only alarms are sounded. Use your palm to touch the lock sensor.

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■
Notes for locking the doors
● Touching the door lock sensor while wearing gloves may delay or prevent
lock operation. Remove the gloves and touch the lock sensor again.
● When the lock operation is performed using the lock sensor, recognition
signals will be shown up to two consecutive times. After this, no recogni-
tion signals will be given.
● If the door handle becomes wet when washing the vehicle while the
access key is within the effective range, the door may lock and unlock
repeatedly. In this case, place the access key in a location 6 ft. (2 m) or
more away from the vehicle (take care to ensure that the key is not sto-
len), and continue to wash the vehicle.
● If the access key is inside the vehicle and a door handle becomes wet
during a car wash, a buzzer will sound outside the vehicle. To turn off the
alarm, lock all the doors.
● The lock sensor may not work properly if it comes into contact with ice,
snow, mud, etc. Clean the lock sensor and attempt to operate it again.
■ Notes for the unlocking function
● A sudden approach to the effective range or door handle may prevent the
doors from being unlocked. In this case, return the door handle to the
original position and check that the doors unlock before pulling the door
handle again.
● Gripping the door handle when wearing a glove may not unlock the door.
Remove the gloves and touch the sensor on the back of the handle
again.
● If the door handle becomes wet when washing the vehicle while the
access key is within the effective range, the door may lock and unlock
repeatedly. In this case, place the access key in a location 6 ft. (2 m) or
more away from the vehicle (take care to ensure that the key is not sto-
len), and continue to wash the vehicle.
● If there is another access key in the detection area, it may take slightly
longer to unlock the doors after the door handle is gripped.

98 1-7. Safety information
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SRS airbag system componentsFront sub sensor (right-hand
side)
SRS airbag system warning
light
Frontal airbag module
(driver's side) (two-stage)
Front passenger’s frontal air-
bag ON and OFF indicator
(center of instrument panel)
Frontal airbag module (front
passenger’s side) (two-
stage)
Front passenger’s occupant
detection control module
Door impact sensor (right-
hand side)
Curtain airbag module (right-
hand side)
Airbag wiring Side airbag module (front
passenger ’s side)
Side airbag sensor (center
pillar right-hand side)
Curtain airbag sensor (rear
wheel house right-hand side)
Seatbelt pretensioner (front
passenger ’s side)
Satellite safing sensor
(under the center of the rear
seats)
Front passenger’s occupant
detection system sensor
Seatbelt buckle switch (front
passenger ’s side)
Seatbelt pretensioner
(driver’s side)
Curtain airbag sensor (rear
wheel house left-hand side)

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Your vehicle is equipped with ADVANCED AIRBAGS designed based
on US motor vehicle safety standards (FMVSS208). The airbag sys-
tem controls airbag deployment power for the driver and front pas-
senger. The front passenger's airbag system consists of the front
passenger occupant detection control module etc.
The main SRS airbag system components are shown above. The
SRS airbag system is controlled by the airbag control module. The
airbag control module consists of an airbag sensor.
In certain types of severe front or side impacts, the SRS airbag sys-
tem triggers the airbag inflators. A chemical reaction in the inflators
quickly fills the airbags with non-toxic gas to help restrain the motion
of the occupants.
Side airbag sensor (center
pillar left-hand side)
Side airbag module (driver’s
side)
Door impact sensor (left-
hand side)
Airbag control module
(including impact sensors
and rollover sensors)
Front sub sensor (left-hand
side)
Curtain airbag module (left-
hand side)
■
If the SRS airbags deploy (inflate)
● Slight abrasions, burns, bruising etc., may be sustained from SRS air-
bags, due to the extremely high speed deployment (inflation) by hot
gases.
● A loud noise and white powder will be emitted.
● Parts of the airbag module (steering wheel hub, airbag cover and inflator)
as well as the front seats, parts of the front and rear pillars, and roof side
rails, may be hot for several minutes. The airbag itself may also be hot.
● The windshield may crack.

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■
Driver’s SRS frontal airbag
The driver’s SRS frontal airbag uses a dual stage inflator. The inflator oper-
ates 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.
NOTE
The driver’s SRS side airbag and SRS curtain airbag are not controlled by
the SUBARU advanced frontal airbag system.
■ 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.
The occupant detection system sensor is installed under the seat upholstery
and monitors 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 nor-
mal. In this case, although the front passenger’s SRS frontal airbag does not
operate, the front passenger’s seatbelt pretensioner operates with the
driver’s seatbelt pretensioner. For details about the seatbelt pretensioner,
refer to “Seatbelt pretensioners”. ( →P. 61)
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.
● 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 accessory under the front passenger’s seat.
● Do not place anything (shoes, umbrella, etc.) under the front passenger’s
seat.
● Do not place a magnet near the seatbelt buckle.

102 1-7. Safety information
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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.
NOTE
The front passenger’s SRS side airbag and SRS curtain airbag are not con-
trolled by the SUBARU advanced frontal airbag system.
■ Passenger’s frontal airbag ON and OFF indicators
→ P. 131
■ Occupant detection system
The occupant detection system sensor is installed under the seat upholstery
and monitors 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.
If the front passenger’s seat cushion is wet, this may adversely affect the
ability of the system to determine deployment. If the seat cushion is wet, the
front passenger should stop sitting on the front passenger’s seat. Wipe off
liquid from the seat immediately, let the seat dry naturally and then check the
SRS airbag system warning light as follows.
●If the SRS airbag system warning light illuminates, keep the seat dry until
the warning light turns off. If the SRS airbag system warning light stays
on even when the seat has dried, do not allow anyone to sit on the front
passenger’s seat and have the system checked by your SUBARU dealer.
● If the SRS airbag system warning light does not illuminate, check that the
front passenger’s frontal airbag ON and OFF indicators work properly. If
the indicators do not work properly, do not allow anyone to sit on the front
passenger’s seat and have the system checked by your SUBARU dealer.

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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.

116 1-7. Safety information
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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