2017 MAZDA MODEL CX-3 Owners Manual (in English)

4–89
When Driving
i-ACTIVSENSE
*Some models.
Rear Cross Traf¿ c Alert (RCTA) *
T h e R e a r C r o s s T r a f¿ c Alert (RCTA) system is designed to assist the driver in checking the
area to the rear of the vehicle on both sides while the vehicle is reversing by alerting the
driver to the presence of vehicles approaching the rear of the vehicle.
The Rear Cross Traf¿ c Alert (RCTA) system detects vehicles approaching from the left and
right sides of the vehicle while the vehicle is being reversed out of a parking space, and
noti¿ es the driver of possible danger using the Blind Spot Monitoring (BSM) warning lights
and the warning buzzer.

Detection areas
Your vehicle

Rear Cross Traf¿ c Alert (RCTA) operation
1. The Rear Cross Traf¿ c Alert (RCTA) system operates when the selector lever is shifted
to the reverse (R) position.
2. If there is the possibility of a collision with an approaching vehicle, the Blind
Spot Monitoring (BSM) warning light À ashes and the warning beep is activated
simultaneously.


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4–90
When Driving
i-ACTIVSENSE
WARNING
Always check the surrounding area visually before actually putting the vehicle in
reverse:
The system is only designed to assist you in checking for vehicles at the rear when putting
the vehicle in reverse. Due to certain limitations with the operation of this system, the
Blind Spot Monitoring (BSM) warning light may not fl ash 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.

N O T E
 


y In the following cases, the Blind Spot Monitoring (BSM) OFF indicator light turns on and
operation of the system is stopped. If the Blind Spot Monitoring (BSM) OFF indicator
light remains illuminated, have the vehicle inspected at an Authorized Mazda Dealer as
soon as possible.
 


y Some problem with the system including the Blind Spot Monitoring (BSM) warning
lights has occurred.
 


y A large deviation in the installation position of a radar sensor (rear) on the vehicle has
occurred.
 


y There is a large accumulation of snow or ice on the rear bumper near a radar sensor
(rear).
 


y Driving on snow-covered roads for long periods.



y The temperature near the radar sensors becomes extremely hot due to driving for long
periods on slopes during the summer.
 


y The battery voltage has decreased.
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4–91
When Driving
i-ACTIVSENSE
 


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




y The vehicle speed when reversing is about 10 km/h (6.3 mph) or faster.



y The radar sensor (rear) 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.)

Your vehicle
 


y A vehicle is approaching directly from the rear of your vehicle.

Your vehicle
 


y The vehicle is parked on a slant.

Your vehicle
 


y Directly after pressing the Blind Spot Monitoring (BSM) switch and the system
becomes operable.
 


y In the following cases, it may be dif¿ cult to view the illumination/À ashing of the Blind
Spot Monitoring (BSM) warning lights equipped on the door mirrors.
 


y Snow or ice adheres to the door mirrors.



y The front door glass is fogged or covered in snow, frost or dirt. 



y Turn off the Rear Cross Traf¿ c Alert (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.

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4–92
When Driving
i-ACTIVSENSE
*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, and by presetting the vehicle speed between 30 km/h (19 mph) and 145 km/h (90
mph), the driver is freed 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.
Use the Mazda Radar Cruise Control (MRCC) system on expressways and other highways
which do not require a lot of repeated acceleration and deceleration.
WARNING
Do not rely completely on the Mazda Radar Cruise Control (MRCC) system and always
drive carefully:
The Mazda Radar Cruise Control (MRCC) system is designed to reduce load on the
driver, and although it maintains a constant vehicle speed, or specifi cally, it maintains
a constant distance between your vehicle and the detected vehicle ahead according to
the vehicle speed, the 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 suffi ciently 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 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.

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4–93
When Driving
i-ACTIVSENSE
Do not use the Mazda Radar Cruise Control (MRCC) system in the following locations.
Otherwise, it could lead to an accident:
 


¾ Roads with sharp curves and where vehicle traffi c is heavy and there is insuffi cient
space between vehicles. Roads where frequent and repetitive acceleration and
deceleration occur (Driving under these conditions using the Mazda Radar Cruise
Control (MRCC) system is not possible).
 


¾ When 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).
 


¾ Slippery roads such as ice or snow-bound roads (The tires could spin causing you to
lose vehicle control).
 


¾ Long descending slopes (to maintain distance between vehicles, the system
automatically and continuously applies the brakes which could result in the loss of
brake power).

For the purposes of safety, switch the Mazda Radar Cruise Control (MRCC) system off
when it is not being used.

CAUTION
If the vehicle is towed or you are towing something, switch the Mazda Radar Cruise
Control (MRCC) system off to prevent an incorrect operation.

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4–94
When Driving
i-ACTIVSENSE
N O T E
 


y The Mazda Radar Cruise Control (MRCC) system operates when all of the following
conditions are met.
 


y The vehicle speed is about 30 km/h (19 mph) to 145 km/h (90 mph).



y The Mazda Radar Cruise Control (MRCC) system is turned on.



y The parking brake is not applied.



y The Smart Brake Support (SBS) is not malfunctioning.



y The Dynamic Stability Control (DSC) is operating normally. 



y The selector lever is in the drive (D) position or manual (M) position (manual mode). 



y In the following cases, the warnings may not activate even if your vehicle starts closing in
on the vehicle ahead.
 


y You are driving at the same speed as the vehicle ahead.



y Directly after the Mazda Radar Cruise Control (MRCC) system has been set.



y When the accelerator pedal is depressed or directly after the accelerator pedal is
released.
 


y Another vehicle cuts into the driving lane. 



y The following are not detected as physical objects. 



y Vehicles approaching in the opposite direction



y Pedestrians



y Stationary objects (stopped vehicles, obstructions) 



y If a vehicle ahead is traveling at an extremely low speed, the system may not detect it
correctly.
 


y During headway control travel, do not set the system on two-wheeled vehicles such as
motorcycles and bicycles.
 


y Do not use the Mazda Radar Cruise Control (MRCC) system under conditions in which
the close proximity warnings are frequently activated.
 


y During headway control travel, the system accelerates and decelerates your vehicle in
conjunction with the speed of the vehicle ahead. However, if it is necessary to accelerate
for a lane change or if the vehicle ahead brakes suddenly causing you to close in on the
vehicle rapidly, accelerate using the accelerator pedal or decelerate using the brake
pedal depending on the conditions.
 


y While the Mazda Radar Cruise Control (MRCC) system is in use, it does not cancel
even if the selector lever is operated and any intended engine braking will not occur. If
deceleration is required, lower the vehicle speed setting or depress the brake pedal.
 


y The brake lights are illuminated while the Mazda Radar Cruise Control (MRCC)
automatic braking is operating.
 


y The Mazda Radar Cruise Control (MRCC) warning light (amber) turns on when the
system has a malfunction. Refer to Warning/Indicator Lights on page 4-24 .



y The headway control operation can be canceled and the system can be switched to only
cruise control. Refer to Cruise Control Function on page 4-100 .
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4–95
When Driving
i-ACTIVSENSE
Mazda Radar Cruise Control (MRCC) Display Indication
The setting status and operation conditions of the Mazda Radar Cruise Control (MRCC)
system are indicated in the active driving display.

Vehicle ahead display
MRCC Distance between vehicle display
MRCC Set vehicle
speed

Close Proximity Warning
If your vehicle rapidly closes in on the vehicle ahead because the vehicle applies the brakes
suddenly while you are traveling in headway control, the warning sound activates and
the brake warning is indicated in the display. Always verify the safety of the surrounding
area and depress the brake pedal while keeping a safer distance from the vehicle ahead.
Additionally, always keep a safer distance from the vehicles behind you.


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4–96
When Driving
i-ACTIVSENSE
Setting the System

CANCEL switch
Switch SwitchRESUME switch
OFF switch ON switch
Cruise control
SET+/SET- switch

When the ON switch is pressed, the vehicle speed and the distance between vehicles while
in headway control can be set. The Mazda Radar Cruise Control (MRCC) indication is
shown in the active driving display.
N O T E
 


y When the ignition is switched to ACC or OFF while the Mazda Radar Cruise Control
(MRCC) is ON, the Mazda Radar Cruise Control (MRCC) remains ON automatically.
 


y When the ON switch is pressed continuously for about 2 seconds while the Mazda Radar
Cruise Control (MRCC) system is turned on, the system switches the function to only
cruise control.

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