sensor MAZDA MODEL CX-30 2019 (in English) Service Manual

xSmart Brake Support [Rear Crossing]
(SBS-RC)
The rear side radar sensors are installed
inside the rear bumper, one on the left
side and one on the right side.
Refer to Rear Side Radar Sensor on
page 4-224.
Rear/rear corner/rear side ultrasonic
sensor
The ultrasonic sensor detects ultrasonic
waves
reflected
off obstructions at the
rear sent from the ultrasonic sensors.
The following systems use the
ultrasonic sensor.
xSmart Brake Support [Rear] (SBS-R)xSmart Brake Support [Rear Crossing]
(SBS-RC)
The ultrasonic sensors are mounted in
the rear bumper.
Refer to Rear/Rear corner/Rear Side
Ultrasonic Sensor on page 4-225.
Front camera/side cameras/rear
camera
The front camera, side cameras, and
rear camera shoot images of the area
surrounding the vehicle. The 360°View
Monitor uses each camera.
Cameras are installed to the front
bumper, door mirrors, and liftgate.
Refer to Front Camera/Side Cameras/
Rear Camera on page 4-226.
Driver monitoring camera
The driver monitoring camera detects
changes in the driver's facial features
and estimates the amount of
accumulated fatigue and sleepiness of
the driver. The following systems use
the driver monitoring camera.
xDriver Monitoring (DM)
The driver monitoring camera is
mounted in the centre display.
Refer to Driver Monitoring Camera on
page 4-226.
▼i-ACTIVSENSE Status Symbol
(Warning/Risk Avoidance Support
System)
The system notifies the driver of any of
the following system status using the
colour or OFF indication of the
i-ACTIVSENSE status symbol
(Warning/risk avoidance support
system).
xLane Departure Warning System
(LDWS)
xBlind Spot Monitoring (BSM)xDistance & Speed Alert (DSA)xFront Cross Traffic Alert (FCTA)xRear Cross Traffic Alert (RCTA)xLane-keep Assist System (LAS)
NOTE
The status of the system turned on
using the personalisation feature is
displayed.
i-ACTIVSENSE status symbol
(warning/risk avoidance support
system) (white)
System stand-by status
If none of the systems are activated or
if there is a problem with the system,
the i-ACTIVSENSE status symbol
(warning/risk avoidance support
system) (white) is displayed.
When Driving
i-ACTIVSENSE
4-96

2. Detection areas
WARNING
Always check the surrounding area
visually before making an actual lane
change:
The system is only designed to assist
you in checking for vehicles at your rear
when making a lane change. Due to
certain limitations with the operation
of this system, the BSM warning
indicator light, the warning sound and
the warning screen indicator display
may not activate or they might be
delayed even though a vehicle is in an
adjacent driving lane. Always make it
your responsibility as a driver to check
the rear.
NOTE
xThe BSM will operate when all of the
following conditions are met:
xThe ignition is switched ON.xThe i-ACTIVSENSE warning
indication/warning light in the
instrument cluster is turned off.
xThe vehicle speed is about 30
km/h (19 mph) or faster.
xThe BSM will not operate under the
following circumstances.
xThe vehicle speed falls below
about 25 km/h (15 mph) even
though the i-ACTIVSENSE warning
indication/warning light is turned
off.
xThe shift lever (manual
transmission)/selector lever
(automatic transmission) is shifted
to reverse (R) and the vehicle is
reversing.
xThe turning radius is small (making
a sharp turn, turning at
intersections).
xIn the following cases, the
i-ACTIVSENSE warning indication/
warning light turns on and operation
of the system is stopped. If the
i-ACTIVSENSE warning indication/
warning light remains illuminated,
have the vehicle inspected at an
expert repairer (we recommend an
Authorised Mazda Repairer) as soon
as possible.
xSome problem with the system
including the BSM warning
indicator lights is detected.
xA large deviation in the installation
position of a rear side radar sensor
on the vehicle has occurred.
xThere is a large accumulation of
snow or ice on the rear bumper
near a rear side radar sensor.
Remove any snow, ice or mud on
the rear bumper.
xDriving on snow-covered roads for
long periods.
xThe temperature near the rear side
radar sensor becomes extremely
hot due to driving for long periods
on slopes during the summer.
xThe battery voltage has decreased.xUnder the following conditions, the
rear side radar sensor cannot detect
target objects or it may be difficult to
detect them.
xThe rear bumper around the rear
side radar sensor is deformed.
xRadio wave interference from a
radar sensor equipped on a nearby
vehicle.
xThe approaching vehicle is any of
the following shapes.
a) The size of the vehicle body is
extremely small.
b) The vehicle height is extremely
low or high.
c) A special type of vehicle with a
complex shape.
When Driving
i-ACTIVSENSE
4-107

xA vehicle is in the detection area at
the rear in an adjacent driving lane
but it does not approach. The BSM
determines the condition based on
radar detection data.
xA vehicle is travelling alongside
your vehicle at nearly the same
speed for an extended period of
time.
xVehicles approaching in the
opposite direction.
xA vehicle in an adjacent driving
lane is attempting to pass your
vehicle.
xA vehicle is in an adjacent lane on
a road with extremely wide driving
lanes. The detection area of the
rear side radar sensor is set at the
road width of expressways.
xIn the following case, the flashing of
the BSM warning indicator light, and
the activation of the warning sound
and the warning screen indicator
display may not occur or they may be
delayed.
xA vehicle makes a lane change
from a driving lane two lanes over
to an adjacent lane.
xDriving on steep slopes.xCrossing the summit of a hill or
mountain pass.
xWhen there is a difference in the
height between your driving lane
and the adjacent lane.
xDirectly after the BSM system
becomes operable by changing the
setting.
xIf the road width is extremely
narrow, vehicles two lanes over may
be detected. The detection area of
the rear side radar sensor is set
according to the road width of
expressways.
xThe BSM warning indicator light may
turn on and the vehicle detection
screen may be displayed in the
display in reaction to stationary
objects (guardrails, tunnels,
sidewalls, and parked vehicles) on
the road or the roadside.
1. Objects such as guardrails and
concrete walls running alongside
the vehicle.

1. Places where the width between
guardrails or walls on each side of
the vehicle narrows.

When Driving
i-ACTIVSENSE
4-108

1. The walls at the entrance and
exits of tunnels, turnouts.

xA BSM warning indicator light may
flash or the warning beep may be
activated several times when making
a turn at a city intersection.
xTurn off the BSM while pulling a
trailer or while an accessory such as a
bicycle carrier is installed to the rear
of the vehicle. Otherwise, the radar’s
radio waves will be blocked causing
the system to not operate normally.
xIf a Mazda genuine trailer hitch is
used, the BSM is automatically
turned off.
xIn the following cases, it may be
difficult to view the illumination/
flashing of the BSM warning
indicator lights equipped on the
door mirrors.
xSnow or ice is adhering to the door
mirrors.
xThe front door glass is fogged or
covered in snow, frost or dirt.
xThe rear side radar sensor of the BSM
may be regulated under the radio
wave related laws of the country
where the vehicle is driven. If this
system is used abroad, it may be
necessary to turn off the system.
Refer to Rear Side Radar Sensor on
page 4-224.
xThe system switches to the Rear
Cross
Tra ffi c Alert (RCTA) function
when the shift lever (manual
transmission) or the selector lever
(automatic transmission) is shifted to
the reverse (R) position.
Refer to Rear Cross
Tra ffi c Alert
(RCTA) on page 4-126.
▼Blind Spot Monitoring (BSM)
Warning Indicator Lights/Display
Indicator/Blind Spot Monitoring
(BSM) Warning Beep
The BSM system notifies the driver of
the presence of vehicles in adjacent
lanes or at the rear of the vehicle using
the BSM warning indicator light, the
warning sound and the display
indicator while the systems are
operational.
BSM warning indicator lights
The BSM warning indicator lights are
equipped on the left and right door
mirrors. The warning indicator lights
turn on when a vehicle approaching
from the rear in an adjacent lane is
detected.
When the ignition is switched ON, the
warning indicator light turns on
momentarily and then turns off after a
few seconds.
Function for cancelling illumination
dimmer
If the BSM warning indicator lights turn
on when the position lights are turned
on, the brightness of the BSM warning
indicator lights is dimmed.
If the BSM warning indicator lights are
difficult to see due to glare from
surrounding brightness when travelling
on snow-covered roads or under foggy
conditions, press the dimmer
cancellation button to cancel the
dimmer and increase the brightness of
When Driving
i-ACTIVSENSE
4-109

If the Forward Sensing Camera (FSC)
cannot classify an auxiliary sign (such
as time restrictions, turning
restrictions, end of section) correctly,
the following screen is displayed.
Inclement weather speed limit sign*
Do not enter signs
Stop signs
Passing prohibited sign*
The TSR can display a passing
prohibited sign and a speed limit sign
at the same time.
NOTE
Speed limit signs (including auxiliary
signs)
xWhen the vehicle speed is about 1
km/h (0.6 mph) or faster, the speed
limit sign is displayed when any one
of the following conditions are met.
xThe Forward Sensing Camera (FSC)
recognises a speed limit sign as a
sign targeted for your vehicle and
the vehicle passes it.
xThe speed limit sign stored in the
navigation system is read.
xInclement weather speed limit signs
are displayed when all of the
following conditions are met.
xThe vehicle speed is about 1 km/h
(0.6 mph) or more.
xThe Forward Sensing Camera (FSC)
recognises an inclement weather
speed limit sign as a sign targeted
for your vehicle and the vehicle
passes it.
xThe inclement weather speed limit
sign is lower than the currently
displayed speed limit sign.
xThe windscreen wipers are
operated.
xIn the following cases, display of the
speed limit sign stops.
xEach sensor determines that the
vehicle has changed direction of
travel. (The display of a speed limit
sign does not stop even if the
vehicle changes lanes while a
"ZONE" auxiliary sign is
displayed.)
xThe Forward Sensing Camera (FSC)
recognises a new speed limit sign
which
differs from the previous
one (displays the new speed limit
sign).
xThe speed limit sign stored in the
navigation system is not read
within a certain period of time (if
the Forward Sensing Camera (FSC)
does not recognise a speed limit
sign, the speed limit sign stored in
the navigation system is displayed).
xThe vehicle speed exceeds the
displayed speed limit sign by 30
km/h (19 mph) or more after a
certain period of time has elapsed
since the speed limit sign was
displayed. (Except when there is
information for the speed limit sign
in the navigation system)
When Driving
i-ACTIVSENSE
4-114*Some models.

xAn object that reflects the radio
waves of the radar such as a
parked vehicle, guardrail, or wall is
directly next to your vehicle.
xVehicles are stopped in the area
around your vehicle such as during
heavy traffic.
xA vehicle approaching from the
front or side of your vehicle slows
down.
xA vehicle approaching from the
front or left side of your vehicle
makes a right or left turn directly in
front of your vehicle.
xA vehicle or pedestrian moves in
the parking lot or on the sidewalk
in the area surrounding your
vehicle.
xAfter making a left or right turn, an
on-coming vehicle is present.
xWhen passing an on-coming
vehicle.
xA vehicle overtakes your vehicle
while it is stopped.
xYour vehicle is in an area where
strong radio waves or electrical
noise may occur such as near a
television tower or power plant.
xUnder the following conditions, the
front side radar sensor cannot detect
approaching vehicles or it might be
difficult to detect them, and the
system may not operate normally.
xThe front side radar sensor
detection area is obstructed by a
nearby wall or vehicle.
xDirectly after the system becomes
operable.
xRadio wave interference from a
radar sensor equipped on a nearby
vehicle.
xThe approaching vehicle has any of
the following shapes.
a) The size of the vehicle body is
extremely small.
b) The vehicle height is extremely
low or high.
c) A special type of vehicle with a
complex shape
xA vehicle suddenly enters the
detection area from the front or
side of your vehicle.
xA vehicle that has stopped
suddenly starts to move.
xMultiple objects move at the same
time.
xThe vehicle is driven in bad
weather conditions such as heavy
rain, fog , snow, or sand storms.
xThe vehicle is driven on a sharp
curve or on bumpy roads.
xAn object that reflects the radio
waves of the radar such as a
parked vehicle, guardrail, or wall is
directly next to your vehicle.
xA vehicle approaches while turning
(Such as roundabout)
xThe vehicle is driven at an
extremely slow speed.
xIn the following cases, the system
turns on the i-ACTIVSENSE warning
indication/warning light and
operation of the system is stopped. If
the i-ACTIVSENSE warning
indication/warning light remains on,
have the vehicle inspected by an
expert repairer (we recommend an
Authorised Mazda Repairer) as soon
as possible.
xSome problem with the system has
occurred.
xThe front side radar sensor
installation position is greatly
deviated.
xThere is a large accumulation of
snow or ice on the front bumper
near a front side radar sensor.
xThe temperature near the radar
sensors becomes extremely hot
due to driving for a long time on
slopes during the summer.
When Driving
i-ACTIVSENSE
4-125

xThe battery voltage has decreased.xThe front side radar sensor of the
FCTA may be regulated under the
radio wave related laws of the
country where the vehicle is driven.
If this system is used abroad, it may
be necessary to turn off the system.
Refer to Front Side Radar Sensor
on page 4-222.
▼Cancelling Operation of Front
Cross Traffic Alert (FCTA)
The FCTA can be set to inoperable.
x(If only the FCTA is turned
off)
Refer to the Settings section in the
Mazda Connect Owner's Manual.
x(If the FCTA is turned off by
operating the i-ACTIVSENSE switch)
Refer to i-ACTIVSENSE Switch on
page 4-97.
NOTE
If the ignition is switched OFF while
you have cancelled the system using
the i-ACTIVSENSE switch, the system is
automatically enabled the next time
the ignition is switched ON. However,
if the system is cancelled using the
personalisation features, the system is
not automatically enabled.
Rear Cross Traffic Alert
(RCTA)
*
▼Rear Cross Traffic Alert (RCTA)
The RCTA system is designed to assist
the driver in checking the area to the
rear left and right sides of your vehicle
while your vehicle is reversing by
alerting the driver to the presence of
vehicles approaching the rear of your
vehicle.
The RCTA system detects vehicles
approaching from the rear left and
right sides of your vehicle and the rear
of your vehicle while your vehicle is
being reversed out of a parking space,
and notifies the driver of possible
danger using the Blind Spot Monitoring
(BSM) warning indicator lights and the
warning buzzer.
1. Your vehicle
2. Detection areas
When Driving
i-ACTIVSENSE
4-126*Some models.

xA vehicle overtakes your vehicle
while it is stopped.
xYour vehicle is in an area where
strong radio waves or electrical
noise may occur such as near a
television tower or power plant.
xIn the following cases, the
i-ACTIVSENSE warning indication/
warning light turns on and operation
of the system is stopped. If the
i-ACTIVSENSE warning indication/
warning light remains illuminated,
have the vehicle inspected at an
expert repairer (we recommend an
Authorised Mazda Repairer) as soon
as possible.
xSome problem with the system
including the Blind Spot
Monitoring (BSM) warning
indicator lights has occurred.
xA large deviation in the installation
position of a rear side radar sensor
on the vehicle has occurred.
xThere is a large accumulation of
snow or ice on the rear bumper
near a rear side radar sensor.
xDriving on snow-covered roads for
long periods.
xThe temperature near the radar
sensors becomes extremely hot
due to driving for long periods on
slopes during the summer.
xThe battery voltage has decreased.xUnder the following conditions, the
rear side radar sensor cannot detect
approaching vehicles or it might be
difficult to detect them, and the
system may not operate normally.
xThe vehicle speed when reversing
is about 15 km/h (9 mph) or
faster.
xThe rear side radar sensor
detection area is obstructed by a
nearby wall or parked vehicle.
(Reverse the vehicle to a position
where the radar sensor detection
area is no longer obstructed.)
1. Your vehicle

xA vehicle is approaching directly
from the rear of your vehicle.
1. Your vehicle

xThe vehicle is parked at an angle.
1. Your vehicle

xDirectly after the RCTA system
becomes operable using the
personalisation feature.
xRadio wave interference from a
radar sensor equipped on a nearby
parked vehicle.
When Driving
i-ACTIVSENSE
4-128

xIn the following cases, it may be
difficult to view the illumination/
flashing of the Blind Spot Monitoring
(BSM) warning indicator lights
equipped on the door mirrors.
xSnow or ice adheres to the door
mirrors.
xThe front door glass is fogged or
covered in snow, frost or dirt.
xTurn off the RCTA system while
pulling a trailer or while an accessory
such as a bicycle carrier is installed to
the rear of the vehicle. Otherwise,
the radio waves emitted by the radar
will be blocked causing the system to
not operate normally.
xThe rear side radar sensor of the
RCTA may be regulated under the
radio wave related laws of the
country where the vehicle is driven. If
this system is used abroad, it may be
necessary to turn off the system.
Refer to Rear Side Radar Sensor on
page 4-224.
xIf a Mazda genuine trailer hitch is
used, the RCTA is automatically
turned off.
▼Cancelling Operation of Rear
Cross
Tra ffi c Alert (RCTA)
The RCTA can be set to inoperable.
x(If only the RCTA is turned off)
Refer to the Settings section in the
Mazda Connect Owner's Manual.
x(If the RCTA is turned off by
operating the i-ACTIVSENSE switch)
Refer to i-ACTIVSENSE Switch on
page 4-97.
NOTE
If the ignition is switched OFF while
you have cancelled the system using
the i-ACTIVSENSE switch, the system is
automatically enabled the next time
the ignition is switched ON. However,
if the system is cancelled using the
personalisation features, the system is
not automatically enabled.
When Driving
i-ACTIVSENSE
4-129

Mazda Radar Cruise
Control (MRCC)
*
▼Mazda Radar Cruise Control
(MRCC)
The MRCC system is designed to
maintain headway control*1 with a
vehicle ahead according to your
vehicle's speed using a front radar
sensor to detect the distance to the
vehicle ahead and a preset vehicle
speed without you having to use the
accelerator or brake pedals.
*1 Headway Control: Control of the
distance between your vehicle and
the vehicle ahead detected by the
MRCC system.
Additionally, if your vehicle starts
closing in on the vehicle ahead such as
if the vehicle ahead brakes suddenly, a
warning sound and a warning
indication in the display are activated
simultaneously to alert you to maintain
a sufficient distance between the
vehicles.
Also refer to the following before using
the MRCC.
xFront radar sensor (page 4-220)
WARNING
Do not rely completely on the MRCC:
The MRCC system has detection
limitations depending on the type of
vehicle ahead and its conditions, the
weather conditions, and the road
conditions. Additionally, the system
may be unable to decelerate
sufficiently to avoid hitting the vehicle
ahead if the vehicle ahead applies the
brakes suddenly or another vehicle
cuts into the driving lane, which could
result in an accident.
Always drive carefully and verify the
surrounding conditions and depress
the brake pedal or accelerator pedal
while keeping a safe distance from
vehicles ahead or on-coming vehicles.
Do not use the MRCC system in the
following locations. Using the MRCC
system at the following locations may
result in an unexpected accident:
¾General roads other than highways
(Driving under these conditions
using the MRCC system is not
possible.)
¾Roads with sharp curves and where
vehicle traffic is heavy with
insufficient space between vehicles,
or roads where frequent and
repetitive acceleration and
deceleration occur (Driving under
these conditions using the MRCC is
not possible).
¾When entering and exiting
interchanges, service areas, and
parking areas of highways (If you exit
a highway while headway control is
in use, the vehicle ahead will no
longer be tracked and your vehicle
may accelerate to the set speed).
¾Slippery roads such as ice or
snow-bound roads (Tyres could spin
causing you to lose vehicle control,
or the stop hold control may not
operate.)
¾Long , descending slopes (to
maintain distance between vehicles,
the system automatically and
continuously applies the brakes
which could result in the loss of
brake power.)
¾Slopes with a steep gradient (The
vehicle ahead may not be detected
correctly.)
¾Two-wheeled vehicles such as
motorcycles or bicycles are ahead.
When Driving
i-ACTIVSENSE
4-130*Some models.