2017 MAZDA MODEL CX-3 sensor

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*Some models.
Mazda Radar Cruise Control (MRCC) *
The Mazda Radar Cruise Control (MRCC) system is designed to maintain headway control *1
according to the vehicle speed using a radar sensor (front) to detect the distance to a vehicle
ahead, which frees the driver from having to constantly use the accelerator or brake pedals.

*1 Headway Control: Control of the distance between your vehicle and the vehicle ahead
detected by the Mazda Radar Cruise Control (MRCC) system.

Additionally, if your vehicle starts closing in on the vehicle ahead because, for example, the
vehicle ahead brakes suddenly, a warning sound and a warning indication in the display are
activated simultaneously to alert you to maintain a suf¿ cient distance between the vehicles.
The possible vehicle speed setting ranges are as follows:
 


 (European models) 
 About 30 km/h (19 mph) to 200 km/h (124 mph)



 (Except European models) 
 About 30 km/h (19 mph) to 145 km/h (90 mph)
Use the Mazda Radar Cruise Control (MRCC) system on expressways and other highways
which do not require a lot of repeated acceleration and deceleration.

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*Some models.
Smart City Brake Support [Reverse] (SCBS R) *
The Smart City Brake Support [Reverse] (SCBS R) is a system which is designed to reduce
damage in the event of a collision by operating the brake control (SCBS brake) when the
system’s ultrasonic 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.

ReverseUltrasonic sensor (rear)

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WARNING
Do not rely completely on the Smart City Brake Support [Reverse] (SCBS R) system:  
 The Smart City Brake Support [Reverse] (SCBS 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 Smart City Brake Support [Reverse] (SCBS R),
heed the following cautions.
 

 
 Do not apply a sticker to an ultrasonic sensor (rear) (including transparent
stickers). Otherwise, the ultrasonic sensor (rear) may not be able to detect vehicles
or obstructions which could result in an accident.
 

 
 Do not disassemble an ultrasonic sensor (rear).


 
 If cracks or damage caused by À ying gravel or debris is visible around an ultrasonic
sensor (rear), stop using the Smart City Brake Support [Reverse] (SCBS R)
system
immediately and have your vehicle inspected by an expert repairer, we recommend
an Authorised Mazda Repairer. 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 City Brake Support [Reverse] (SCBS R) System
Operation on page 4-175 .



 
 Consult an expert repairer, we recommend an Authorised Mazda Repairer for rear
bumper replacement.

Do not modify the suspension:
If the vehicle height or inclination is changed, the Smart City Brake Support [Reverse]
(SCBS R) system may not operate correctly because it cannot detect obstructions
correctly.

Do not apply a strong force to an ultrasonic sensor (rear):
When washing the vehicle, do not spray highly pressurised water against an ultrasonic
sensor (rear), 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 Smart City Brake Support [Reverse] (SCBS R) system
to not operate normally, or it could operate unnecessarily.

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CAUTION
  When driving off-road in areas where there is grass or foliage, it is recommended that
the Smart City Brake Support [Reverse] (SCBS R) system be turned off.
  Always use tyres of the speci¿ ed size and the same manufacturer, brand, and tread
pattern on all 4 wheels. In addition, do not use tyres with signi¿ cantly different wear
patterns on the same vehicle. Do not use tyres with signi¿ cantly different wear patterns
on the same vehicle. Otherwise, the Smart City Brake Support [Reverse] (SCBS R)
system may not operate normally.
  If ice or snow is stuck on the ultrasonic sensors (rear) 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.

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NOTE
  The vehicle posture changes depending on the accelerator pedal, brake pedal and
steering wheel operations, which could make it dif¿ cult for the system to recognise an
obstruction, or it could facilitate unnecessary detection. In such cases, the Smart City
Brake Support [Reverse] (SCBS R) may or may not operate.
  The Smart City Brake Support [Reverse] (SCBS R) system will operate under the
following conditions.
 


 The engine is running.



 The change lever (manual transaxle vehicle) or the selector lever (automatic
transaxle vehicle) is in the R (reverse) position.
 


 The vehicle speed is between about 2 to 8 km/h (2 to 4 mph).



 The Smart City Brake Support [Reverse] (SCBS R) is not turned off.



 The DSC is not malfunctioning. 

 The Smart City Brake Support [Reverse] (SCBS R) operates using ultrasonic sensors
(rear) which detect obstructions at the rear by emitting ultrasonic waves and then
receiving the returning waves reÀ ected off the obstructions.

 In the following cases, the ultrasonic sensors (rear) cannot detect obstructions and the
Smart City Brake Support [Reverse] (SCBS 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 obstruction is positioned away from the centre of the vehicle.



 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.



 The obstruction is extremely close.

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NOTE
  In the following cases, the ultrasonic sensors (rear) cannot detect obstructions correctly
and the Smart City Brake Support [Reverse] (SCBS R) may not operate.
 


 Something is stuck on the bumper near an ultrasonic sensor (rear).



 The steering wheel is turned sharply, or 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 À at.



 Heavy luggage is loaded in the luggage compartment or on the rear seat.



 Objects such as a wireless aerial, fog light, or illuminated number plate is installed
near an ultrasonic sensor (rear).
 


 The orientation of an ultrasonic sensor (rear) 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, an ultrasonic sensor (rear) may detect something as a target
obstruction which could cause the Smart City Brake Support [Reverse] (SCBS R)
system to operate.
 


 Driving on a steep slope.



 Wheel blocks.



 Hanging curtains, gate poles such as at toll gates and railroad crossing.



 When travelling 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 towing bar is installed or a trailer is connected. 

 (Manual transaxle)  If the vehicle is stopped by the SCBS operation and the clutch pedal is not depressed,
the engine stops.
  When the system operates, the user is noti¿ ed by the active driving display. 
 The Smart City Brake Support (SCBS) warning indication (amber) turns on when the
system has a malfunction.
 Refer to Warning Lights on page 4-36 .

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*Some models.
Smart Brake Support (SBS) *
The Smart Brake Support (SBS) system alerts the driver of a possible collision using a
display and warning sound if the radar sensor (front) and the Forward Sensing Camera
(FSC) determine that there is the possibility of a collision with a vehicle ahead while the
vehicle is being driven at about 15 km/h or faster (10 mph or faster). Furthermore, if the
radar sensor (front) and the Forward Sensing Camera (FSC) determines that 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 ¿ rmly and
quickly to assist. (Brake Assist (SBS brake assist))
WARNING
Do not rely completely on the Smart Brake Support (SBS) system and always drive
carefully:
The Smart Brake Support (SBS) is designed to reduce damage in the event of
a collision, not avoid an accident. The ability to detect an obstruction is limited
depending on the obstruction, weather conditions, or traf¿ c conditions. Therefore,
if the accelerator pedal or brake pedal is mistakenly operated it could result in an
accident. Always verify the safety of the surrounding area and depress the brake pedal
or accelerator pedal while keeping a safer distance from vehicles ahead or on-coming
vehicles.
CAUTION
In the following cases, turn the system off to prevent a mis-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.

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NOTE
  The Smart Brake Support (SBS) system operates when all of the following conditions
are met:
 


 The ignition is switched ON.



 The Smart Brake Support (SBS) system is on.



 The vehicle speed is about 15 km/h or faster (10 mph or faster).



 The relative speed between your vehicle and the vehicle ahead is about 15 km/h or
faster (10 mph or faster).
 


 The Dynamic Stability Control (DSC) is not operating. 

 The Smart Brake Support (SBS) system may not operate under the following
conditions:
 


 If the vehicle is accelerated rapidly and it comes close to a vehicle ahead.



 The vehicle is driven at the same speed as the vehicle ahead.



 The accelerator pedal is depressed.



 The brake pedal is depressed.



 The steering wheel is being operated.



 The selector lever is being operated.



 The direction indicator is being used.



 When the vehicle ahead is not equipped with tail lights or the tail lights are turned
off.
 


 When warnings and messages, such as a dirty windscreen, related to the Forward
Sensing Camera (FSC) are being displayed in the centre display.
 
 Although the objects which activate the system are four-wheeled vehicles, the radar
sensor (front) could detect the following objects, determine them to be an obstruction,
and operate the Smart Brake Support (SBS) system.
 


 Objects on the road at the entrance to a curve (including guardrails and snow banks).



 A vehicle appears in the opposite lane while cornering or rounding a curve.



 When crossing a narrow bridge.



 When passing under a low gate or through a tunnel or narrow gate.



 When entering an underground parking area.



 Metal objects, bumps, or protruding objects on the road.



 If you suddenly come close to a vehicle ahead.



 When driving in areas where there is high grass or forage.



 Two-wheeled vehicles such as motorbikes or bicycles.



 Pedestrians or non-metallic objects such as standing trees. 

 When the system operates, the user is noti¿ ed by the active driving display. 
 The Smart Brake Support (SBS) warning indication (amber) turns on when the system
has a malfunction.
 Refer to Warning Lights on page 4-36 .