sensor MAZDA MODEL CX-30 2020 Workshop Manual

There is a problem with the system.The parking brake is automatically
applied during stop hold control.
The front radar sensor cannot detect
target objects (during rain, fog , snow
or other inclement weather
conditions, or when the radiator
grille is dirty).
The parking brake is applied.Any of the doors is opened.The driver's seat belt is unfastened.The operation frequency of the
braking by the MRCC with Stop &
Go function control is high.
Resuming control
If the MRCC with Stop & Go function
system is canceled, you can resume
control at the previously set speed by
pressing the RES switch and after all of
the operation conditions have been
met.
NOTE
If the set speed is not indicated in the
display, the control does not resume
even if the RES switch is pressed.
Tu r n i n g off the system
When the MRCC switch is pressed
while the MRCC is operating, the
MRCC turns off.
▼Stop Hold Control
While in headway control using the
MRCC with Stop & Go function
system, your vehicle will stop when a
vehicle ahead stops. When the vehicle
is stopped and the stop hold control
operates, the MRCC with Stop & Go
function indicator light turns on.
NOTE
If the MRCC with Stop & Go
function system is canceled during
stop hold control, the vehicle is held
in its stopped position.
The parking brake is automatically
applied and the vehicle is held in its
stopped position when 10 minutes
have elapsed since the stop hold
control operated. At this time, the
MRCC with Stop & Go function
system is canceled.
The brake lights turn on during stop
hold control.
To resume driving
After the vehicle ahead starts moving
while your vehicle is stopped under
stop hold control, press the RES switch
or depress the accelerator pedal to
cancel the stop hold control and
resume driving.
NOTE
When you resume driving by pressing
the RES switch, your vehicle does not
start moving until the distance
between your vehicle and the vehicle
ahead lengthens to the specified
distance or farther.
If the MRCC with Stop & Go
function is temporarily canceled
during stop hold control, you cannot
resume driving by pressing the RES
switch when there are no vehicles in
front of your vehicle. Depress the
accelerator pedal and resume driving
the vehicle.
If the vehicle ahead starts moving
within 3 seconds after your vehicle is
stopped by the stop hold control,
headway control will resume even if
you do not resume driving your
vehicle, such as by depressing the
accelerator pedal.
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NOTE
The distance-between-vehicles differs depending on the vehicle speed, and the
slower the vehicle speed, the shorter the distance.
When the ignition is switched to ACC or OFF, the set distance-between-vehicles is
taken over automatically even when the engine is started again.

The function is temporarily canceled.
Headway control function
When the following operations are performed, the headway control function is
temporarily canceled and the TJA set indication (green) changes to the TJA standby
indication (white) at the same time.
The CANCEL switch is pressed one time.The brake pedal is depressed.(Automatic transmission vehicle)
The selector lever is in the P, N, or R position.
(Manual transmission vehicle)
The shift lever is in the R position.

In the following cases, the TJA cancel indication is displayed and a sound is activated
one time.
The DSC has operated.The Smart Brake Support (SBS) has operated.The vehicle is driven on a downslope for a long time.There is a problem with the system.The front radar sensor cannot detect target objects (during rain, fog, snow or other
inclement weather conditions, or when the radiator grille is dirty).
The parking brake is applied.Any of the doors is opened.The driver's seat belt is unfastened.The operation frequency of the braking by the TJA control is high.(Automatic transmission vehicle)
The parking brake is automatically applied during stop hold control.
(Manual transmission vehicle)
The vehicle speed decreases below 25 km/h (15 mph).The shift lever is in the neutral posi tion for a certain period of time.The clutch pedal is depressed for a certain period of time.The engine has stalled.

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Active driving display
NOTE
When the driver operates the steering
wheel while the steering wheel
operation assist is operating, the
steering wheel operation assistance is
canceled.
▼System Canceling
The LAS can be set to inoperable.
(If only the LAS is turned
off)
Refer to the Settings section in the
Mazda Connect Owner's Manual.
(If the LAS is turned off by operating
the i-ACTIVSENSE switch)
Refer to i-ACTIVSENSE Switch on
page 4-85.
NOTE
If the ignition is switched OFF while
you have canceled 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 canceled using the
personalization features, the system is
not automatically enabled.
Smart Brake Support
(SBS)
*
▼Smart Brake Support (SBS)
The SBS alerts the driver of a possible
collision using the warning indications
in the display and a warning sound if
the front radar sensor and Forward
Sensing Camera (FSC) determine that
there is the possibility of a collision
with a vehicle ahead, pedestrian, or a
bicycle. Furthermore, if a collision is
unavoidable, the automatic brake
control is performed to reduce damage
in the event of a collision. In addition,
when the driver depresses the brake
pedal, the brakes are applied firmly
and quickly to assist.
(Vehicles with Driver Monitoring
(DM))
When the SBS determines that the
driver is not paying attention to the
road using the driver monitoring
camera and it determines that there is
the possibility of a collision with an
obstruction, the SBS activates the
collision warning earlier than normal.
WARNING
Do not rely completely on the
SBS:
The SBS is only designed to reduce
damage in the event of a collision.
The ability to detect obstructions is
limited depending on the obstructions,
weather conditions, or traffic
conditions. Over reliance on the
system leading to the accelerator pedal
or brake pedal being mistakenly
operated could result in an accident.
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CAUTION
In the following cases, turn the system
off to prevent an unexpected
operation.
The vehicle is being towed or when
towing another vehicle.
 The vehicle is on a chassis roller.
 When driving on rough roads such as
in areas of dense grass or off-road.
See the next page on how to turn
off
the system.
Refer to Stopping the Smart Brake
Support (SBS) System Operation on
page 4-151.
Operation conditions
The SBS operates when all of the
following conditions are met.
The ignition is switched ON.The SBS is on.The i-ACTIVSENSE warning
indication/warning light is not
turned on.
(Object is vehicle ahead)
The vehicle speed is about 4 km/h
(2 mph) or higher.
(Object is a pedestrian or bicycle)
The vehicle speed is between about
10 to 80 km/h (6.2 to 50 mph).
The DSC does not operate.
NOTE
Under the following conditions, the
SBS may not operate.
If there is the possibility of hitting
only a part of a vehicle or
obstruction ahead.
You are driving your vehicle at the
same speed as the vehicle ahead.
When the driver deliberately
performs driving operations
(accelerator operation, steering
wheel operation).
The accelerator pedal is depressed
abruptly.
The brake pedal is being
depressed.
The steering wheel is being
operated.
The selector lever is being shifted.The turn signal lever is being
operated.
When warnings and messages,
such as a dirty windshield, related
to the Forward Sensing Camera
(FSC) or front radar sensor are
being displayed on the
multi-information display.
The SBS may operate under the
following conditions.
There is an object in the road at
the entrance to a curve (including
guardrails and snow banks).
Passing an approaching vehicle
while rounding a curve.
When crossing a narrow bridge,
and passing through low gates,
narrow gates, car washing
machines, or tunnels.
When passing through a toll gate.When entering an underground
parking area.
There is a metal object, bump, or a
protruding object on the road.
If you suddenly come close to a
vehicle ahead.
There is an animal, wall, or tree.Notifies the driver with a warning
indication on the multi-information
display and the active driving display
(vehicles with active driving display)
while the system is operating.
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If a malfunction is detected or the
system temporarily stops the
function due to dirty sensors (such as
radar sensor or Forward Sensing
Camera (FSC)), the i-ACTIVSENSE
warning indication/warning light
turns on and a message is displayed
on the multi-information display.
On a manual transmission vehicle,
the engine stops if the clutch pedal is
not depressed when the vehicle is
stopped by the SBS brake operation.
If the vehicle is stopped by the SBS
brake operation and the brake pedal
is not depressed, the SBS brake is
automatically released after about 2
seconds.
▼ Collision Warning
When there is a possibility of a
collision with a vehicle ahead, the
collision warning sound is activated
continuously and a warning is
displayed on the multi-information
display and the active driving display.
Multi-information display
1. “BRAKE!” message is displayed

Active driving display
1. “BRAKE!” message is displayed
NOTE
The collision warning sound is
activated intermittently while the SBS
brake or brake assist (SBS brake
assist) is operating.
The operation distance and volume
of the collision warning can be
changed.
Refer to the Settings section in the
Mazda Connect Owner's Manual.
▼Stopping the Smart Brake Support
(SBS) System Operation
The SBS can be changed to inoperable.
Refer to the Settings section in the
Mazda Connect Owner's Manual.
When the SBS is canceled, the SBS OFF
indicator light turns on.
NOTE
When the ignition is switched OFF
while the SBS is canceled, the SBS is
automatically enabled the next time
the ignition is switched ON.
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Smart Brake Support[Rear] (SBS-R)
*
▼Smart Brake Support [Rear]
(SBS-R)
The SBS-R is a system which is
designed to reduce
damage in the
event of a collision by operating the
brake control (SBS brake) when the
system’s sensors detect an obstruction
at the rear of the vehicle while driving
at a speed of about 2 to 8 km/h (2 to
4 mph) and the system determines that
a collision is unavoidable.
WARNING
Do not rely completely on the SBS-R
system:
 The
SBS-R system is only designed to
reduce damage in the event of a
collision. Over reliance on the system
leading to the accelerator pedal or
brake pedal being mistakenly
operated could result in an accident.
 To assure the correct operation of
the
SBS-R, heed the following
cautions.
 Do not apply a sticker to a rear
ultrasonic sensor and rear camera.
Otherwise, the rear ultrasonic
sensor and rear camera may not be
able to detect vehicles or
obstructions which could result in
an accident.
 Do not disassemble a rear
ultrasonic sensor and rear camera.
 If cracks or damage caused by
flying gravel or debris is visible
around a rear ultrasonic sensor and
rear camera, stop using the SBS-R
system immediately and have your
vehicle inspected by an Authorized
Mazda Dealer. If the vehicle
continues to be driven with cracks
or scratch marks left around an
ultrasonic sensor, the system may
operate unnecessarily and cause
an unexpected accident.
Refer to Stopping the Smart Brake
Support [Rear] (SBS-R) System
Operation on page 4-155.
 Consult an Authorized Mazda
Dealer for rear bumper
replacement.
Do not modify the suspension:
If the vehicle height or inclination is
changed, the SBS-R system may not
operate correctly because it cannot
detect obstructions correctly.
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Do not apply a strong force to a rear
ultrasonic sensor and rear camera:
When washing the vehicle, do not
spray highly pressurized water against a
rear ultrasonic sensor and rear camera,
or rub it strongly. In addition, do not
hit the rear bumper forcefully when
loading and unloading cargo.
Otherwise, the sensors may not detect
obstructions correctly which could
cause the SBS-R system to not operate
normally, or it could operate
unnecessarily.
CAUTION
When driving off-road in areas where
there is grass or foliage, it is
recommended that the
SBS-R system
be turned off.
 Always use tires of the specified size
and the same manufacturer, brand,
and tread pattern on all 4 wheels. In
addition, do not use tires with
significantly different wear patterns
on the same vehicle. Otherwise, the
SBS-R system may not operate
normally.
 If ice or snow is stuck on the rear
ultrasonic sensor and rear camera
they may not be able to detect
obstructions correctly depending on
the conditions. In such cases, the
system may not be able to perform
controls correctly. Always drive
carefully and pay attention to the
rear of the vehicle.
NOTE
The vehicle posture changes
depending on the accelerator pedal,
brake pedal and steering wheel
operations, which could make it
difficult for the system to recognize
an obstruction, or it could facilitate
unnecessary detection. In such cases,
the SBS-R may or may not operate.
The SBS-R system will operate under
the following conditions.
The engine is running.The shift lever (manual
transmission ve hicle) or the
selector lever (automatic
transmission vehicl e) is in the R
(reverse) position.
i-ACTIVSENSE warning indication/
warning light is not displayed in the
multi-information display.
The vehicle speed is between
about 2 to 8 km/h (2 to 4 mph).
The SBS-R is not turned off.The DSC is not malfunctioning.In the following cases, the rear
ultrasonic sensor and rear camera
cannot detect obstructions and the
SBS-R may not operate.
The height of the obstruction is
low such as low walls or trucks
with low loading platforms.
The height of the obstruction is
high such as trucks with high
loading platforms.
The obstruction is small.The obstruction is thin such as a
signpost.
The surface of the obstruction is
not pointed vertically relative to
the vehicle.
The obstruction is soft such as a
hanging curtain or snow stuck to a
vehicle.
The obstruction is shaped
irregularly.
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The obstruction is extremely close.In the following cases, the rear
ultrasonic sensor and rear camera
cannot detect obstructions correctly
and the SBS-R may not operate.
Something is stuck on the bumper
near a rear ultrasonic sensor.
The brake or accelerator pedal is
operated.
There is another obstruction near
one obstruction.
During inclement weather such as
rain, fog and snow.
High or low humidity.High or low temperaturesStrong winds.The path of travel is not flat.Heavy luggage is loaded in the
luggage compartment or on the
rear seat.
Objects such as a wireless antenna,
fog light, or illuminated license
plate is installed near a rear
ultrasonic sensor.
The orientation of a rear ultrasonic
sensor has deviated for reasons
such as a collision.
The vehicle is affected by other
sound waves such as the horn,
engine noise, ultrasonic sensor of
another vehicle.
In the following cases, a rear
ultrasonic sensor and rear camera
may detect something as a target
obstruction which could cause the SBS-R system to operate.
Driving on a steep slope.Wheel blocks.Hanging curtains, gate poles such
as at toll gates and railroad
crossing.
When traveling near objects such
as foliage, barriers, vehicles, walls,
and fences along a road.
When driving off-road in areas
where there is grass and forage.
When passing through low gates,
narrow gates, car washing
machines, and tunnels.
A trailer is connected.A bright light source such as
sunlight hits the rear camera.
The surroundings are dark.An exterior accessory such as a
bicycle carrier is installed around a
rear ultrasonic sensor.
(Manual transmission)
If the vehicle is stopped by the SBS-R
operation and the clutch pedal is not
depressed, the engine stops.
When the system operates, the user
is notified by the multi-information
display.
The collision warning beep sounds
intermittently while the SBS-R brake
is operating.
If the vehicle is stopped by the SBS-R
operation and the brake pedal is not
depressed, displaying in meter
“Emergency Braking Activated.
Depress Brake Pedal to Hold Stop”,
after about 2 seconds and the SBS-R
brake is automatically released.
Turn off the SBS-R system while
pulling a trailer or while an accessory
such as a bicycle carrier is installed to
the rear of the vehicle.
▼ Collision Warning
If there is a possibility of a collision, the
collision warning sound is activated
continuously and a warning is
displayed on the active driving display
and the multi-information display.
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WARNING
Always check the surrounding area
visually before actually putting the
vehicle in reverse:
The system is only designed to assist
you in backing out of the lot when
putting the vehicle in reverse. Due to
certain limitations with the operation
of this system, the SBS-RC system may
not operate brake or it might be
delayed even though a vehicle is
behind your vehicle. Always make it
your responsibility as a driver to check
the rear.
Do not rely completely on the SBS-RC
system:
The
SBS-RC system is only designed
to reduce damage in the event of a
collision. Over reliance on the system
leading to the accelerator pedal or
brake pedal being mistakenly
operated could result in an accident.
 The SBS-RC system operates in
response to a vehicle. The system
does not operate in response to
obstructions such as a wall,
pedestrians, 2-wheeled vehicles, or
animals.
To assure the correct operation of the
SBS-RC, heed the following cautions.
 Do not apply a sticker to a rear radar
and rear camera. Otherwise, the rear
radar and rear camera may not be
able to detect vehicles or
obstructions which could result in an
accident.
 Do not disassemble a rear radar and
rear camera.
If cracks or damage caused by flying
gravel or debris is visible around a
rear radar and rear camera, stop
using the SBS-RC system
immediately and have your vehicle
inspected by an Authorized Mazda
Dealer. If the vehicle continues to be
driven with cracks or scratch marks
left around an ultrasonic sensor, the
system may operate unnecessarily
and cause an unexpected accident.
Refer to Stopping the Smart Brake
Support [Rear Crossing] (SBS-RC)
System Operation on page 4-159.
 Consult an Authorized Mazda Dealer
for rear bumper replacement.
Do not modify the suspension:
If the vehicle height or inclination is
changed, the SBS-RC system may not
operate correctly because it cannot
detect obstructions correctly.
Do not apply a strong force to a rear
radar and rear camera:
When washing the vehicle, do not
spray highly pressurized water against a
rear radar and rear camera, or rub it
strongly. In addition, do not hit the rear
bumper forcefully when loading and
unloading cargo. Otherwise, the
sensors may not detect obstructions
correctly which could cause the
SBS-RC system to not operate
normally, or it could operate
unnecessarily.
NOTE
The SBS-RC system will operate
under the following conditions.
The engine is running.
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The shift lever (manual
transmission vehicle) or the
selector lever (automatic
transmission vehicle) is in the R
(reverse) position.
i-ACTIVSENSE warning indication/
warning light is not displayed in the
multi-information display.
The vehicle speed is under about
10 km/h (6 mph).
The vehicle speed of an
approaching vehicle is about 3
km/h (2 mph) or faster.
The SBS-R is not turned off.The DSC is not malfunctioning.In 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
Authorized Mazda Dealer as soon as
possible.
Some problem with the system
including the SBS-RC system.
A large deviation in the installation
position of a rear side radar sensor
on the vehicle has occurred.
There is a large accumulation of
snow or ice on the rear bumper
near a rear side radar sensor.
Driving on snow-covered roads for
long periods.
The temperature near the radar
sensors becomes extremely hot
due to driving for long periods on
slopes during the summer.
The battery voltage has decreased.Under the following conditions, the
rear side radar sensor cannot detect
target objects or it may be difficult to
detect them.
The 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
A vehicle is approaching directly
from the rear of your vehicle.
1. Your vehicle
The vehicle is parked on a slant.
1. Your vehicle
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