2023 SUBARU BRZ warning

BSD/RCTA (If Equipped)
2687-20. BSD/RCTA (If Equipped)The BSD/RCTA consists of rear corner
radars with Blind Spot Detection and Rear
Cross Traffic Alert.
These functions of BSD/RCTA are the
systems that detect objects and vehicles
to the rear and draw attention to the driver
when changing a lane or when driving in
reverse.
■ System FeaturesBSD/RCTA consists of the following func-
tions.
To detect a vehicle in a blind spot on an
adjacent lane or a vehicle approaching at
high speed while driving the vehicle (Blind
Spot Detection)
 To detect a vehicle approaching from
the right or left while reversing the vehicle
(Rear Cross Traffic Alert) The system uses radar sensors for the

following features.
NOTEThe BSD/RCTA radar sensor has been
certified by the radio wave related laws
of the U.S. and other FCC compliant
countries, Canada and Mexico. When
driving in other countries, certifica-
tion of the country where the vehicle is
driven must be obtained. For certifica-
tion in the U.S. and other FCC compli-
ant countries, Canada and Mexico,
refer to "Certification for the BSD/
RCTA" P274.
▼ Blind Spot Detection (BSD)1) Operating range
WARNING
The driver is responsible for driving
safely. Always be sure to check the
surroundings with your eyes when
changing lanes or reversing the
vehicle.
The system is designed to assist
the driver in changing lanes or
reversing safely by monitoring the
rear and side areas of the vehicle.
However, you cannot rely on this
system alone in assuring the safety
during a lane change or reversing.
Overconfidence in this system
could result in an accident and lead
to serious injury or death. Since the
system operation has various lim-
itations, the flashing or illumination
of the BSD/RCTA approach indica-
tor light may be delayed or it may
not operate at all even when a vehi-
cle is present in a neighboring lane
or approaching from either side.The driver is responsible for paying
attention to the rear and side areas
of the vehicle.
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BSD/RCTA (If Equipped)
269
Starting and Operating7
– CONTINUED –
The system notifies the driver of the pres-
ence of vehicles in its blind spot.
If the system detects a vehicle in its
blind spot, it warns the driver by illumi-
nating the BSD/RCTA approach indicator
light(s) on the outside mirror(s).
 If the driver operates the turn signal
lever in the direction where the BSD/
RCTA approach indicator light is illumi-
nating, the system warns the driver of
dangers by flashing the BSD/RCTA
approach indicator light.
▽ Lane Change Assist (LCA)1) Operating rangeThe system notifies the driver of vehicles
approaching at a high speed in the neigh-
boring lanes. 
If the system detects a vehicle
approaching at a high speed in the neigh-
boring lanes, it warns the driver of
dangers by illuminating the BSD/RCTA
approach indicator light(s) on the outside
mirror(s).
 If the driver operates the turn signal
lever in the direction where the BSD/
RCTA approach indicator light is illumi-
nating, the system warns the driver of
dangers by flashing the BSD/RCTA
approach indicator light.
▼ Rear Cross Traffic Alert (RCTA)
1) Operating rangeThe system notifies the driver of another
vehicle approaching from either side when
driving in reverse. This feature helps the driver check the rear and side areas of the

vehicle when moving backward.
If the system detects a vehicle
approaching from either side while moving
backward, it warns the driver of dangers in
the following way.
 The BSD/RCTA approach indicator
light(s) on the outside mirror(s) flashes.
 A warning buzzer sounds.
 An icon appears on the center informa-
tion display.
▽Limitations of the detectability
of RCTA
Since the detectabilit y of RCTA is limited,
the RCTA may not operate properly in
angled parking.
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701460
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701818
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A B
1
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BSD/RCTA (If Equipped)
270Example 1
1) The detection range of the radar
sensors
2) Area out of detection range of the radar
sensors
A) Vehicle that may not be detected
B) Parked vehicle
Example 2
1) The detection range of the radar
sensors C) Vehicle that may be detected
NOTEThe system may detect that a vehicle

(C) is passing in front of your vehicle.
Always be sure to check the
surroundings with your eyes when
reversing the vehicle.■ System Operation▼ Operating conditionsThe BSD/RCTA will operate when all of
the following conditions are met.
 The ignition switch is in the “ON” posi-
tion.
 The BSD/RCTA warning indicator and
BSD/RCTA OFF indicator are turned off.
 The vehicle is driven at speeds above
7 mph (12 km/h) (except when reversing).
 The shift lever/select lever is in the “R”
position (RCTA only).
The BSD/RCTA will not operate in the
following situations.
 The BSD/RCTA OFF indicator
appears.
 The vehicle speed is below 6 mph (10
km/h) even when the BSD/RCTA OFF
indicator does not appear (except when
reversing).
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 misali gned (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.
WARNING
An approaching vehicle (A) may not
be detected because the detection
range is limited by the parked vehi-
cle (B). Always be sure to check the
surroundings with your eyes when
reversing the vehicle.
701819
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C
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BSD/RCTA (If Equipped)
271
Starting and Operating7
– CONTINUED –
- 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 driving in a lane next to the neigh-
boring lane.
■
BSD/RCTA Approach Indi -
cator Light/Warning BuzzerWhile the BSD/RCTA is active, the
following item(s) will operate to alert the
driver:
 The BSD/RCTA approach indicator
light (when there are v ehicles 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)
▼ BSD/RCTA approach indicator lightBSD/RCTA approach indicator light
702801
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BSD/RCTA (If Equipped)
272It 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 vehicle 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
flashing 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 the 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 - 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 speedBRZ_U.book 272 ページ ２０２２年３月２９日　火曜日　午後３時５９分

BSD/RCTA (If Equipped)
273
Starting and Operating7
– CONTINUED –
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. ▼
System temporary stops due to
reduced radar sensitivity
1) BSD/RCTA temporary stop message
due 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 rema ins displayed for a
prolonged time, have the system
inspected at a SUBARU dealer.
702802
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2
702877
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BSD/RCTA (If Equipped)
274■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 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” position 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
\b

\f
 


1
2
702879
702806
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 –
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.
NOTEThe 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-
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. Otherwis e, 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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