sensor MAZDA MODEL 2 2017 (in English) Workshop Manual

4–181
When Driving
i-ACTIVSENSE
*Some models.
Radar Sensors (Rear) *
Your vehicle is equipped with radar sensors (rear). The following systems also use the radar
sensors (rear).
 


 Blind Spot Monitoring system (BSM)



 Rear Cross Traf¿ c Alert (RCTA)
The radar sensors (rear) function by detecting the radio waves reÀ ected off a vehicle
approaching from the rear or an obstruction sent from the radar sensor.

Saloon Hatchback
Radar sensors (rear) Radar sensors (rear)

The radar sensors (rear) are installed inside the rear bumper, one each on the left and right
sides.
Always keep the surface of the rear bumper near the radar sensors (rear) clean so that the
radar sensors (rear) operate normally. Also, do not apply items such as stickers.
Refer to Exterior Care on page 6-66 .
CAUTION
If the rear bumper receives a severe impact, the system may no longer operate normally.
Stop the system immediately and have the vehicle inspected at an Authorised Mazda
Dealer.

4–182
When Driving
i-ACTIVSENSE
NOTE
  The detection ability of the radar sensors (rear) has limitations. In the following cases,
the detection ability may lower and the system may not operate normally.
 


 The rear bumper near the radar sensors (rear) has become deformed.



 Snow, ice or mud adheres to the radar sensors (rear) on the rear bumper.



 Under bad weather conditions such as rain, snow and fog. 

 Under the following conditions, the radar sensors (rear) cannot detect target objects or
it may be dif¿ cult to detect them.




 Stationary objects on a road or a road side such as small, two-wheeled vehicles,
bicycles, pedestrians, animals, and shopping carts.
 


 Vehicle shapes which do not reÀ ect radar waves well such as empty trailers with a
low vehicle height and sports cars.


 Vehicles are shipped with the direction of the radar sensors (rear) adjusted for each
vehicle to a loaded vehicle condition so that the radar sensors (rear) detect approaching
vehicles correctly. If the direction of the radar sensors (rear) has deviated for some
reason, have the vehicle inspected at an Authorised Mazda Dealer.
  For repairs or replacement of the radar sensors (rear), or bumper repairs, paintwork,
and replacement near the radar sensors, consult an Authorised Mazda Dealer.
  Turn off the 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.
  The radar sensors are regulated by the relevant radio wave laws of the country in
which the vehicle is driven. If the vehicle is driven abroad, authorization from the
country in which the vehicle is driven may be required.

4–183
When Driving
i-ACTIVSENSE
*Some models.
Ultrasonic Sensor (Rear) *
The ultrasonic sensors (rear) function by emitting ultrasonic waves which are reÀ ected off
obstructions at the rear and the returning ultrasonic waves are picked up by the ultrasonic
sensors (rear).

Saloon Hatchback
Ultrasonic sensor (rear)
Ultrasonic sensor (rear)
The ultrasonic sensors (rear) are mounted in the rear bumper.

4–190
When Driving
Tyre Pressure Monitoring System
*Some models.
Tyre Pressure Monitoring System *
The Tyre Pressure Monitoring System (TPMS) monitors the air pressure of all four tyres. If
the air pressure of one or more tyres is too low, the system warns the driver by indicating the
tyre pressure monitoring system warning light in the instrument cluster and operating a beep
sound. The system monitors the tyre pressures indirectly using the data sent from the ABS
wheel speed sensors.
To allow the system to operate correctly, the system needs to be initialized with the speci¿ ed
tyre pressure (value on the tyre pressure label). Follow the procedure and perform the
initialization.
Refer to Tyre Pressure Monitoring System Initialization on page 4-192 .
The warning light À ashes when the system has a malfunction.
Refer to Warning Lights on page 4-38 .


ABS wheel speed sensor

4–204
When Driving
Parking Sensor System
*Some models.
Parking Sensor System *
The parking sensors use ultrasonic sensors which detect obstructions around the vehicle
when the vehicle is driven at low speeds, such as during garage or parallel parking, and a
buzzer sound and detection indicator notify the driver of the approximate distance from the
vehicle to the surrounding obstruction.


Rear sensorRear sensor
Saloon Hatchback
Rear corner sensor
Rear corner sensor

WARNING
Do not rely completely on the parking sensor system and be sure to con¿ rm the safety
around your vehicle visually when driving:
This system can assist the driver in operating the vehicle in the backward directions
while parking. The detection ranges of the sensors are limited, therefore, driving the
vehicle while relying only on the system may cause an accident. Always con¿ rm the
safety around your vehicle visually when driving.

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.

4–206
When Driving
Parking Sensor System
Sensor Detection Range
The sensors detect obstructions within the following range.


Rear sensor detection range Rear corner sensor detection rangeB AA: About 50 cm (About 19 in)
B: About 150 cm (About 59.0 in)
Viewing distance display

Display Distance between vehicle and obstruction

Rear sensor:
Approx. 150—60 cm (59.0—23.6 in)

Rear sensor:
Approx. 60—45 cm (23.6—17.7 in)
Rear corner sensor:
Approx. 50—37 cm (19.6—14.6 in)

4–207
When Driving
Parking Sensor System
Display Distance between vehicle and obstruction

Rear sensor:
Approx. 45—35 cm (17.7—13.7 in)
Rear corner sensor:
Approx. 37—25 cm (14.6—9.8 in)

Rear sensor:
Within approx. 35 cm (13.7 in)
Rear corner sensor:
Within approx. 25 cm (9.8 in)

Park Assist Sensor System Operation
When the ignition is switched ON and the shift lever (manual transaxle)/selector lever
(automatic transaxle) is shifted to the reverse (R), the beep sound activates and the system is
enabled for use.

4–208
When Driving
Parking Sensor System
Obstruction Detection Indication
The position of a sensor which has detected an obstruction is indicated. The gauge
illuminates in different areas depending on the distance to an obstruction detected by the
sensor.
As the vehicle approaches closer to an obstruction, the zone in the gauge closer to the
vehicle illuminates.


Right corner
sensor gauge Left corner
sensor gauge
Rear sensor gauge

4–209
When Driving
Parking Sensor System
System problem noti¿ cation
If any of the problems indicated in the table occurs, the driver is noti¿ ed of the problem
depending on the type of system as shown.

Disconnection Solution
Disconnection

The system may have a malfunction. Have
the vehicle inspected at an expert repairer, we
recommend an Authorised Mazda Repairer as soon
as possible.
System
malfunction

The system may have a malfunction. Have
the vehicle inspected at an expert repairer, we
recommend an Authorised Mazda Repairer as soon
as possible.
Frost/soiling

Foreign matter may be on the sensor area
corresponding to the obstruction detection
indication shown. If the system does not recover,
have the vehicle inspected at an expert repairer, we
recommend an Authorised Mazda Repairer.