2017 MAZDA MODEL 2 brake sensor

4–167
When Driving
i-ACTIVSENSE
*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.

4–16 8
When Driving
i-ACTIVSENSE
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 4-38 .

4–176
When Driving
i-ACTIVSENSE
*Some models.
Radar Sensor (Front) *
Your vehicle is equipped with a radar sensor (front).
The following systems also use the radar sensor (front).
 


 Mazda Radar Cruise Control (MRCC)



 Distance Recognition Support System (DRSS)



 Smart Brake Support (SBS)
The radar sensor (front) functions by detecting the radio waves reÀ ected off a vehicle ahead
or an obstruction sent from the radar sensor.
The radar sensor (front) is mounted behind the front emblem.

Radar sensor (front)

If the Smart Brake Support/Smart City Brake Support (SBS/SCBS) Warning Light (amber)
is illuminated, the area around the radar sensor may be dirty. Refer to “Warning Guidance”
in the centre display (Type B audio).
Refer to If a Warning Light Turns On or Flashes on page 7-35 .

4–17 8
When Driving
i-ACTIVSENSE
NOTE
  Under the following conditions, the radar sensor (front) may not be able to detect
vehicles ahead or obstructions correctly and each system may not operate normally.
 


 The rear surface of a vehicle ahead does not reÀ ect radio waves effectively, such as
an unloaded trailer or an automobile with a loading platform covered by a soft top,
vehicles with a hard plastic tailgate, and round-shaped vehicles.
 


 Vehicles ahead with low vehicle height and thus less area for reÀ ecting radio waves.



 Visibility is reduced due to a vehicle ahead casting off water, snow, or sand from its
tyres and onto your windscreen.
 


 The boot/luggage compartment is loaded with heavy objects or the rear passenger
seats are occupied.
 


 Ice, snow, or soiling is on the front surface of the front emblem.



 During inclement weather such as rain, snow, or sand storms.



 When driving near facilities or objects emitting strong radio waves. 

 Under the following conditions, the radar sensor (front) may not be able to detect
vehicles ahead or obstructions.
 


 The beginning and end of a curve.



 Roads with continuous curves.



 Narrow lane roads due to road construction or lane closures.



 The vehicle ahead enters the radar sensor's blind spot.



 The vehicle ahead is running abnormally due to accident or vehicle damage.



 Roads with repeated up and down slopes



 Driving on poor roads or unpaved roads.



 The distance between your vehicle and the vehicle ahead is extremely short.



 A vehicle suddenly comes close such as by cutting into the lane. 

 To prevent incorrect operation of the system, use tyres of the same speci¿ ed size,
manufacturer, brand, and tread pattern on all four wheels. In addition, do not use
tyres with signi¿ cantly different wear patterns or tyre pressures on the same vehicle
(Including the temporary spare tyre).
  If the battery power is weak, the system may not operate correctly. 
 If the vehicle is driven on a road with little traf¿ c and few vehicles ahead or
obstructions for the radar sensor (front) to detect, the sensor detects that the radar
sensor (front) is dirty and the Smart Brake Support/Smart City Brake Support (SBS/
SCBS) Warning Light (amber) may be temporarily turned on. However, it does not
indicate a malfunction.

4–17 9
When Driving
i-ACTIVSENSE
*Some models.
Laser Sensor *
The Smart City Brake Support (SCBS) laser sensor is installed at the top of the windscreen
near the rearview mirror.



Always keep the surface of the windscreen around the laser sensor clean to assure proper
operation of the Smart City Brake Support (SCBS) system.
WARNING
As there is the possibility of eye damage occurring from the laser, always heed the
following precautions:
 
 Never remove the sensor. 
 A removed sensor will not meet the conditions for a class 1M laser under the IEC
60825-1 speci¿ cation and therefore eye safety cannot be assured.

 Do not peer into the sensor using optical instruments with a magni¿ cation function
such as magnifying glasses, and microscopic and objective lenses within a distance
of 100 mm (3.94 in) from the sensor.

4–205
When Driving
Parking Sensor System
NOTE
  Do not install any accessories within the detection ranges of the sensors. It may affect
the system operation.
  Depending on the type of obstruction and the surrounding conditions, the detection
range of a sensor may narrow, or the sensors may not be able to detect obstructions.
  The system may not operate normally under the following conditions: 



 Mud, ice, or snow is adhering to the sensor area (Returns to normal operation when
removed).
 


 The sensor area is frozen (Returns to normal operation when the ice is thawed).



 The sensor is covered by a hand.



 The sensor is excessively shocked.



 The vehicle is excessively tilted.



 Under extremely hot or cold weather conditions.



 The vehicle is driven on bumps, inclines, gravel, or grass covered roads.



 Anything which generates ultrasound is near the vehicle, such as another vehicle's
horn, the engine sound of a motorcycle, the air brake sound of a large-sized vehicle,
or another vehicle's sensors.
 


 The vehicle is driven in heavy rain or in road conditions causing water-splash.



 A commercially-available wing pole or an aerial for a radio transmitter is installed to
the vehicle.
 


 The vehicle is moving towards a tall or square curbstone.



 An obstruction is too close to the sensor. 

 Obstructions under the bumper may not be detected. Obstructions that are lower than
the bumper or thin which may have been initially detected but are no longer detected
as the vehicle approaches more closely.
  The following types of obstructions may not be detected: 



 Thin objects such as wire or rope



 Things which absorb sonic waves easily such as cotton or snow



 Angular shaped objects



 Very tall objects, and those which are wide at the top



 Small, short objects 

 Always have the system inspected at an expert repairer, we recommend an Authorised
Mazda Repairer if any shock is applied to the bumpers, even in a minor accident. If the
sensors are deviated, they cannot detect obstructions.
  The beeper which indicates a system malfunction may not be heard if the ambient
temperature is extremely cold, or mud, ice, or snow adheres to the sensor area.
Remove any foreign material from the sensor area.
  When installing a trailer hitch, consult an expert repairer, we recommend an
Authorised Mazda Repairer.

7–39
If Trouble Arises
Warning/Indicator Lights and Warning Sounds
*Some models.
Signal Warning


Master Warning
Light
Vehicles with type B audio
The light turns on when the system has a malfunction.
Operate the centre display and verify the content.
Refer to If a Warning Light Turns On or Flashes on page 7-35 .
Vehicles with type A audio
The light illuminates continuously if any one of the following occurs. Consult an expert
repairer, we recommend an Authorised Mazda Repairer.

There is a malfunction in the battery management system.
There is a malfunction in the brake switch.
(SKYACTIV-D 1.5) There is a malfunction in the engine's hydraulic control.
There is a malfunction in the engine's timing chain.
There is a malfunction in the blow-by heater.
There is a malfunction in the oil level sensor.


Check Engine Light If this light illuminates while driving, the vehicle may have a problem. It is important to
note the driving conditions when the light illuminated and consult an expert repairer, we
recommend an Authorised Mazda Repairer.
The check engine light may illuminate in the following cases:
The engine's electrical system has a problem.
The emission control system has a problem.
(SKYACTIV-G 1.3, SKYACTIV-G 1.5) The fuel tank level being very low or approaching empty.
The fuel-¿ ller cap is missing or not tightened securely. If the check engine light remains on, or it À ashes continuously , do not drive at high speeds
and consult an expert repairer, we recommend an Authorised Mazda Repairer as soon as
possible.


(Amber)
i-stop warning light
*
When the light is turned on
A problem in the system may be indicated under the following conditions. Have your
vehicle inspected at an expert repairer, we recommend an Authorised Mazda Repairer.
The light does not turn on when the ignition is switched ON.
The light continues to remain on even though the i-stop OFF switch has been pressed
while the engine is running.
When the light is À ashing
The light continues to À ash if the system has a malfunction. Have your vehicle inspected at
an expert repairer, we recommend an Authorised Mazda Repairer.


(Amber)
i-ELOOP Warning
Light
* The light turns on if there is any malfunction in the i-ELOOP system. Consult an expert
repairer, we recommend an Authorised Mazda Repairer.

7–47
If Trouble Arises
Warning/Indicator Lights and Warning Sounds
*Some models.
Signal Warning Action to be taken


(Amber)
Smart Brake
Support/Smart
City Brake
Support (SBS/
SCBS) Warning
Light
* The light turns on if the windscreen or
the radar sensor are dirty, or there is a
malfunction in the system.
Vehicles with type B audio
Verify the reason why the warning light
is illuminated on the centre display (page
7-35 ).
If the reason why the warning light is
illuminated is due to a dirty windscreen, clean
the windscreen.
If the warning light is illuminated because of
a dirty radar sensor, clean the front emblem.
For any other reasons, have the vehicle
inspected at an expert repairer, we recommend
an Authorised Mazda Repairer.
Vehicles with type A audio
If the reason why the warning light is
illuminated is due to a dirty windscreen, clean
the windscreen. For any other reasons, have
the vehicle inspected at an expert repairer, we
recommend an Authorised Mazda Repairer.


KEY Warning Light
Take the appropriate action and verify that the warning light turns off.

Signal Cause Action to be taken


(Red)
(Flashing) The advanced key battery is dead. Replace the key battery (page 6-41 ).
The advanced key is not within the
operation range.
Bring the advanced key into the operation
range (page 3-7 ). The advanced key is placed in areas inside
the cabin where it is dif¿ cult for the key to
be detected.
A key from another manufacturer similar to
the advanced key is in the operation range. Take the key from another manufacturer
similar to the advanced key out of the
operation range.
Without the ignition switched off, the
advanced key is taken out of the cabin, and
then all the doors are closed. Bring the advanced key back into the
cabin.