warning SUBARU BRZ 2022 Owners Manual

BSD/RCTA (If Equipped)
271
Starting and Operating7
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NOTEIn the following cases, the BSD/
RCTA will stop operating and the BSD/
RCTA warning indicator will appear. - When a malfunction occurs in
the system, including the BSD/
RCTA approach indicator light
 If the BSD/RCTA warning indicator
appears, exercise proper caution. For
details, refer to "BSD/RCTA Warning
Indicator" 
P274.
 In the following cases, the BSD/
RCTA will temporarily stop operating
(or may stop operating) and the BSD/
RCTA OFF indicator will appear. - When the radar sensor becomes
significantly misaligned (If the orien-
tation of the radar sensor is shifted
for any reason, readjustment is
required. Have the sensor adjusted
at a SUBARU dealer.)
- When a large amount of snow or
ice sticks to the rear bumper surface
around the radar sensors
- When the vehicle is driven on a
snow-covered road or in an environ-
ment in which there are no objects
around (such as in a desert) for a
prolonged period of time
- When the temperature around
the radar sensors increases exces-
sively due to long driving on uphill
grades in the summer, etc. - When the temperature around
the radar sensors becomes
extremely low
- When the vehicle battery voltage
lowers
- When the vehicle voltage
exceeds the battery voltage rating
The BSD/RCTA will resume operation
once these conditions are corrected,
and the BSD/RCTA OFF indicator will
disappear. However, if the BSD/RCTA
OFF indicator appears for a prolonged
period of time, have the system
inspected at a SUBARU dealer as soon
as possible.
 The detectability of the radar
sensors is restricted. The BSD/RCTA
detection may be impaired and the
system may not operate properly
under the following conditions. - When the rear bumper around
the radar sensors is distorted
- When ice, snow or mud adheres
to the rear bumper surface around
the radar sensors
- When stickers, etc. are affixed on
the areas of the radar sensors on the
rear bumper
- During adverse weather condi-
tions such as rain, snow or fog
- When driving on wet roads such
as snow-covered roads and through
puddles 
The radar sensors may not detect or
may have difficulty detecting the
following vehicles and objects. - Small motorcycles, bicycles,
pedestrians, stationary objects on
the road or road side, etc.
- Vehicles with body shapes that
the radar may not reflect (vehicles
with lower body height such as a
trailer with no cargo and sports
cars)
- Vehicles that are not
approaching your vehicle even
though they are in the detection area
(either on a neighboring lane to the
rear or beside your vehicle when
reversing) (The system determines
the presence of approaching vehi-
cles based on data detected by the
radar sensors.)
- Vehicles traveling at signifi-
cantly different speeds
- Vehicles driving in parallel at
almost the same speed as your
vehicle for a prolonged time
- Oncoming vehicles
- Vehicles in a lane beyond the
neighboring lane
- Vehicles travelling at a signifi-
cantly lower speed that you are
trying to overtake
 On a road with extremely narrow
lanes, the system may detect vehicles
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BSD/RCTA (If Equipped)
272driving in a lane next to the neigh-
boring lane.■
BSD/RCTA Approach Indi-
cator Light/Warning Buzzer
While the BSD/RCTA is active, the
following item(s) will operate to alert the
driver:
 The BSD/RCTA approach indicator
light (when there are vehicles in the neigh-
boring lanes).
 The BSD/RCTA approach indicator
light and warning buzzer (when a vehicle
is approaching from the left or right side
while your vehicle is reversing)
▼
B SD/RCTA approach indicator lightBSD/RCTA approach indicator light
It is mounted on each side of the outside
mirrors.
The indicator light will illuminate
when a
vehicle approaching from behind is
detected.
The indicator light will flash
to warn the
driver of dangers under the following
conditions.
 While the indicator light is illuminating,
if the turn signal lever is operated toward
the side in which this light turned on
 When reversing the vehicle while the
system detects a v ehicle approaching
from either side
▽BSD/RCTA approach indicator
light dimming function
When the headlights are turned on, the
brightness of the BSD/RCTA approach
indicator light will be reduced.
NOTE You may have difficulty seeing the
BSD/RCTA approach indicator light
under the following conditions. - When sunlight shines directly on
it
- When the headlight beams from
a vehicle traveling behind shines
directly on it
 While the illumination brightness
control dial is in the fully upward posi- tion, even if the headlights are turned
on, the brightness of the BSD/RCTA
approach indicator light will not be
reduced. For details about the illumina-
tion brightness control dial, refer to
"Illumination Brightness Control"

P130.
▼BSD/RCTA approach warning
buzzer (only when reversing)
A warning buzzer sounds along with
fl ashing of the BSD/RCTA approach indi-
cator light to warn the driver of dangers.
The setting of the warning buzzer volume
can be changed by operating the center
information display. For details, refer to
"Car settings" P165.
▼Safety tips regarding t he BSD/
RCTA approach indicator light/
warning buzzer
 In the following cases, operation of the
BSD/RCTA approach indicator light and
the warning buzzer may be delayed or the
system may fail to issue these warnings.
- When a vehicle moves to the neigh-
boring lane from a lane next to the
neighboring lane
- When driving on a steep incline or
on repeated sharp uphill and downhill
grades
- When going beyond a pass
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BSD/RCTA (If Equipped)
273
Starting and Operating7
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- When both your vehicle and a
vehicle driving on a neighboring lane
are driving on the far side of each lane.
- When several narrowly-spaced
vehicles are approaching in a row
- In low radius bends (tight bends or
when making turns at an intersection)
- When there is a difference in height
between your lane and the neighboring
lane
- Immediately after the BSD/RCTA is
activated by touching “BSD/RCTA”
- Immediately after the shift lever/
select lever is shifted to the “R” position
- When extremely heavy cargo is
loaded in the trunk
 During reversing, operation of the BSD/
RCTA approach indicator light and the
warning buzzer may be delayed or the
system may fail to issue these warnings
under the following conditions.
- When backing out of an angled
parking space
- When a large-sized vehicle is
parked next to your vehicle (That
vehicle prevents the propagation of
radar waves.)
- When reversing on sloped roads
- When reversing at a high speed 
The BSD/RCTA approach indicator
light may illuminate when driving close to
solid objects on the road or road side
(such as guardrails, tunnels and side-
walls).
 When turning at an intersection in
urban areas, or a multilane intersection,
the BSD/RCTA approach indicator light
may flash.
 If a building or a wall exists in the
reversing direction, the BSD/RCTA
approach indicator light may flash and the
warning buzzer may sound.
 In the following cases, the system may
detect a vehicle driving two lanes away
from your vehicle.
- When your vehicle drives on the
near side of its lane from the corre-
sponding vehicle - When the vehicle driving two lanes
away drives on the near side of its lane
from your vehicle
■
BSD/RCTA OFF Indicator
▼
System temporary stops1) BSD/RCTA temporary stop message
2) BSD/RCTA OFF indicatorThis display appears when the system is
used at extremely high or low tempera-
tures or when abnormal voltage exists.
Once these conditions are corrected, the
system will recover from the temporary
stop condition and the indicator will disap-
pear.
If the indicator remains displayed for a
prolonged time, have the system
inspected at a SUBARU dealer.
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BSD/RCTA (If Equipped)
274▼
System temporary stops due to
reduced radar sensitivity1) BSD/RCTA temporary stop messagedue to reduced radar sensitivity
2) BSD/RCTA OFF indicatorThis display appears when the detect-
ability of the radar sensors is reduced.
Once the condition is corrected, the
system will recover from the temporary
stop condition and the indicator will disap-
pear.
If the indicator remains displayed for a
prolonged time, have the system
inspected at a SUBARU dealer.
■
BSD/RCTA Warning Indi-
cator
▼
System malfunction1) BSD/RCTA malfunction message
2) BSD/RCTA warning indicatorThis display appears when a malfunction
occurs in the system. Contact a SUBARU
dealer and have the system inspected.
■
To Turn On/Off the BSD/
RCTABSD/RCTA OFF indicatorTo turn the BSD/RCTA system on and off,
operate the center information display.
Refer to "Car settings" P165.
When the BSD/RCTA system is turned
OFF, the BSD/RCTA OFF indicator on the
combination meter display (color TFT) will
illuminate.NOTE In the following cases, turn off the
BSD/RCTA system. The system may
not operate properly due to blocked
radar waves. - When towing the vehicle
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BSD/RCTA (If Equipped)
275
Starting and Operating7
– CONTINUED –
- When a bicycle carrier or other
item is fitted to the rear of the
vehicle
- When using a chassis dynamom-
eter or free roller device, etc.
- When running the engine and
making the wheels rotate while
lifting up the vehicle
 If the ignition switch is turned to the
“OFF” position, the last known status
of the system is maintained. For
example, if the ignition switch is turned
to the “OFF” positi on with the BSD/
RCTA deactivated, the BSD/RCTA
remains deactivated the next time the
ignition switch is turned to the “ON”
position.
■
Certification for the BSD/
RCTA
 The U.S. and other FCC compliant
countries
FCC ID: OAYSRR3A This device complies with part 15 of the
FCC Rules. Operation is subject to the
following two conditions: (1) This device
may not cause harmful interference, and
(2) this device must accept any interfer-
ence received, including interference that
may cause undesired operation.

Canada-spec. models
CAUTION
FCC WARNINGChanges or modifications not
expressly approved by the party
responsible for compliance could
void the user’s authority to operate
the equipment.
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Reverse Automatic Braking (RAB) System (If Equipped)
277
Starting and Operating7
– CONTINUED –
NOTEIf the radar sensors require repair or
replacement, or the bumper area
around the radar sensors requires
repair, paintwork or replacement, con-
tact your SUBARU dealer for assis-
tance.
7-21. Reverse Automatic
Braking (RAB) System (If Equipped)Reverse Automatic Braking (RAB) is a
system designed to help avoid collisions
or reduce collision damage when
reversing the vehicle. If a wall or an
obstacle is detected in the reversing direc-
tion, the system will notify the driver with a
warning sound and may activate the
vehicle’s brakes automatically.
Do not expose the bumper near
the radar sensors to strong
impacts. If a sensor becomes
misaligned, a system malfunction
may occur, including the inability
to detect vehicles entering the
detection areas. If any strong
shock is applied to the bumper,
be sure to contact your SUBARU
dealer for inspection.Do not disassemble the radar
sensors.
WARNING
Reverse Automatic Braking
(RAB) is not a system intended to
replace the driver’s responsibility
to check their surroundings for
vehicles or obstacles to avoid a
collision.The driver is responsible for
driving safely. Before reversing,
be sure to first depress the brake
pedal and visually check the
surroundings.
There are some cases in which
the vehicle cannot avoid colli-
sion, because the system opera-
tion has limitations. The warning
sound or automatic braking may
be delayed or may not operate at
all even when an obstacle is
present.Make sure to set the Automatic
Braking to OFF when the vehicle
is on the free roller or on the
chassis dynamometer. Other-
wise, the vehicle may move and it
may cause an accident.Make sure to set the Automatic
Braking to OFF when towing the
vehicle. Otherwise, the vehicle
may move and it may cause an
accident.The system is not designed to
detect people (including chil-
dren), animals or other moving
objects.Depending on the vehicle condi-
tion or the surrounding environ-
ment, the sonar sensor’s ability
to detect objects may become
unstable.
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Reverse Automatic Braking (RAB) System (If Equipped)
278NOTEThe Reverse Automatic Braking (RAB)
system records and stores the follow-
ing data when automatic braking oper-
ates. It does not record conversations,
personal information or other audio
data.
Distance from the object
 Vehicle speed
 Accelerator pedal operation status
 Brake pedal operation status
 Select lever position
 Outside temperature
 The sensitivity setting of the sonar
sensors
SUBARU and third parties contracted
by SUBARU may acquire and use the
recorded data for the purpose of vehi-
cle research and development.
SUBARU and third parties contracted
by SUBARU will not disclose or pro-
vide the acquired data to any other
third party except under the following
conditions.
 The vehicle owner has given his/her
consent.
 The disclosure/provision is based
on a court order or other legally
enforceable request.
 Data that has been modified so that
the user and vehicle cannot be identi-
fied is provided to a research institu- tion for statistical processing or similar
purposes.
■
Reverse Automatic Braking
(RAB) System
Overview
The Reverse Automatic Braking (RAB)
system will operate t he following 2 func-
tions using 4 sonar sensors.
 Sonar Audible Alarm
The Reverse Automatic Braking (RAB)
system detects objects rearward and
warns the driver by warning message on
the center information display and
warning beeps.
 Automatic Braking
The automatic braking detects objects
rearward and if there is a high risk of a
collision, the system decelerates the
vehicle and controls the braking to reduce
damage.
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Reverse Automatic Braking (RAB) System (If Equipped)
279
– CONTINUED –
Starting and Operating7
1) When reversing
2) When either strong automatic braking or torque control is applied to prevent collision (in this
case, short warning beeps or continuous warning beeps will sound)
3) When the vehicle is stopped by the system (in this case, the continuous beep will remain sounding)
4) Object (e.g., a wall)
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4
2 Object Close Behind
3 Apply Brake To Hold Position 4
4
■
Operating ConditionsThe Reverse Automatic Braking (RAB)
system will operate when all of the
following conditions are met.
WARNING
If your vehicle is trapped on a rail-
road crossing and you are trying to
escape by reversing through the
crossing gate, the system may rec-
ognize the crossing gate as an
obstacle and brake may activate. In
this case, remain calm and either
continue to depress the accelerator
pedal or cancel the system. To can-
cel the system, refer to "Canceling
the Reverse Automatic Braking
(RAB) System Operation" P286.
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Reverse Automatic Braking (RAB) System (If Equipped)
2801) EyeSight warning indicator
2) RAB warning indicator
3) RAB OFF indicatorThe ignition switch is in the “ON” posi-
tion.
 The EyeSight warning indicator is off.
 The RAB warning indicator is off.
 The RAB OFF indicator is off.
 The select lever is in the “R” position.
Sonar Audible Alarm
 The sonar audible alarm is set to “ON”.
 The vehicle speed is from 0 to 9 mph (0
to 15 km/h).
Automatic Braking
 The automatic braking is set to “ON”.
 The vehicle speed is from 1 to 9 mph
(1.5 to 15 km/h).
NOTE In the following cases, the Reverse
Automatic Braking (RAB) system will
not operate. Promptly contact a
SUBARU dealer to have the system
inspected. - The EyeSight warning indicator
is illuminated.
- The RAB warning indicator is
illuminated.
 In the following cases, the Reverse
Automatic Braking (RAB) system
cannot be operated. - The RAB OFF indicator is illumi-
nated.
 In the following cases, the functions
may not be able to properly work.
Promptly contact a SUBARU dealer to
have the system inspected. - A sticker, paint, or a chemical is
applied to the sonar sensors or the
rear bumper near the sonar sensor.
- The rear bumper is modified.
- The rear bumper has been
removed and attached.
- The ground clearance is
changed due to the vehicle’s
loading condition or modification.
- There is damage to the sonar
sensors or the rear bumper near the
sonar sensor. - The rear bumper is exposed to
strong impact, or the rear bumper is
deformed.
 On a steep hill, the system’s auto-
matic braking ability will be reduced.
 The system is designed to avoid
collisions by automatic hard braking
when the vehicle’s reversing speed is
less than approximately 3 mph (5 km/
h). However, the system does not guar-
antee that the vehicle will be able to
avoid collisions in any situation.
 If the vehicle is reversed at an
extremely slow speed, the driver’s
operation may be prioritized. In this
case, automatic braking will not
operate.
 The system may not be able to
detect and apply the brake with the
following objects. - Sharp or thin objects such as
poles, fences and ropes which may
not reflect the sound wave emitted
from the sonar sensor.
- Objects that are too close to the
rear bumper when the select lever is
set to the “R” position.
- Objects with a surface which
may not reflect the sound wave
emitted from the sonar sensor such
as a chain link fence.
 Objects the system is not designed
to detect and apply brake.
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Reverse Automatic Braking (RAB) System (If Equipped)
282
- The path of the reversing direc-
tion is inclined such as on a steep
uphill.
- When reversing downhill.- Reversing in a garage with a low
ceiling or a tunnel.
- A curb or step is present in the
reversing direction.
- There is a patch of snow rear-
ward.
- There is a puddle of water. - There is an obstacle that is next
to an object.
- Going back along a wall.
- The area where the road starts
touching dirt and snow
- When reversing on an uneven
road.
 In circumstances such as the
following, it may not be possible to
avoid a collision even when the system
operates normally. - Roads are slippery.
- The tire air pressure is not
correct.
- The tires have become worn.
- Tire chains are installed.
- Tires which are not the desig-
nated size are installed.
- Emergency repairs were
performed using a puncture repair
kit.
- The suspension was modified.
- Vehicle driving is unstable due to
accident or malfunction.
- The brake warning light is illumi-
nated.
■
Sonar Audible Alarm
When Reverse Automatic Braking (RAB)
system is in operation, an audible warning
beeps will sound in 3 levels to warn the
driver of a potential collision.
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