Mazda CX-3 (2019 year). Manual - part 15

Rear Cross Traffic Alert (RCTA)

*

The 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 RCTA system detects vehicles approaching from the rear left and right sides of the
vehicle, and the rear of the vehicle while the vehicle is being reversed out of a parking
space, and notifies the driver of possible danger using the Blind Spot Monitoring (BSM)
warning indicator lights and the warning buzzer.

Detection areas

Your vehicle 

RCTA operation

1. The RCTA system operates when the shift lever (manual transaxle) or the selector lever

(automatic transaxle) 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 indicator lights flashes and the warning beep is activated
simultaneously.

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The RCTA warning indication in the rearview monitor also synchronizes with the Blind
Spot Monitoring (BSM) warning indicator light on the door mirrors.

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 indicator lights may not flash 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.

NOTE

•

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.

•

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

•

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

•

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

•

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.

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•

The battery voltage has decreased.

•

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

•

The vehicle speed when reversing is about 10 km/h (6 mph) or faster.

•

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

•

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

Your vehicle

•

The vehicle is parked on a slant.

Your vehicle

•

Directly after the Blind Spot Monitoring (BSM) system becomes operable using the
personalization feature.

•

Radio wave interference from a radar sensor equipped on a nearby parked vehicle.

•

In the following cases, it may be difficult to view the illumination/flashing of the Blind
Spot Monitoring (BSM) warning indicator lights equipped on the door mirrors.

•

Snow or ice adheres to the door mirrors.

•

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

•

Turn off the 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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Mazda Radar Cruise Control with Stop & Go function

(MRCC with Stop & Go function)

*

The MRCC with Stop & Go function system is designed to maintain headway control

*1

with a vehicle ahead according to your vehicle's speed using a radar sensor (front) to detect
the distance to the vehicle ahead and a preset vehicle speed without you having to 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 such as if the vehicle
ahead brakes suddenly, a warning sound and a warning indication in the display are
activated simultaneously to alert you to maintain a sufficient distance between the vehicles.
If the vehicle ahead stops while you are following behind it, your vehicle will stop and be
held stopped automatically (stop hold control), and headway control will resume when you
resume driving the vehicle such as by pressing the RES switch.
Also refer to the following before using the MRCC with Stop & Go function.

•

AUTOHOLD (page 4-61)

•

Forward Sensing Camera (FSC) (page 4-130)

•

Radar sensor (front) (page 4-135)

WARNING

Do not rely completely on the MRCC with Stop & Go function:
The MRCC with Stop & Go function 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 sufficiently 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 drive carefully and verify the surrounding conditions and depress the brake pedal or
accelerator pedal while keeping a safer distance from vehicles ahead or on-coming vehicles.

Do not use the MRCC with Stop & Go function system in the following locations, using the
MRCC with Stop & Go function system at the following locations may result in an unexpected
accident:

General roads other than highways (Driving under these conditions using the MRCC with

Stop & Go function system is not possible.)

Roads with sharp curves and where vehicle traffic is heavy and there is insufficient space

between vehicles.

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Roads where frequent and repetitive acceleration and deceleration occur (Driving under

these conditions using the MRCC with Stop & Go function system is not possible).

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).

Slippery roads such as ice or snow-bound roads (Tires could spin causing you to lose vehicle

control, or the stop hold control may not operate.)

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.)

Slopes with a steep gradient (The vehicle ahead may not be detected correctly, your vehicle

may slide while stopped by the stop hold control, and it may accelerate suddenly after it
starts moving.)

For safety purposes, switch the MRCC with Stop & Go function system off when it is not being
used.

Do not get out of the vehicle while the stop hold control is operating:
Getting out of the vehicle while the stop hold control is operating is dangerous as the vehicle
may move unexpectedly and result in an accident. Before getting out of the vehicle, switch the
MRCC with Stop & Go function system off, shift the selector lever to the P position, and apply
the parking brake.

CAUTION

If your vehicle is towed or you are towing something, switch the MRCC with Stop & Go
function system off to prevent a mis-operation.

NOTE

•

The MRCC with Stop & Go function system does not detect the following as physical
objects.

•

Vehicles approaching in the opposite direction

•

Pedestrians

•

Stationary objects (stopped vehicles, obstructions)

•

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

•

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

•

Do not use the MRCC with Stop & Go function system under conditions in which close
proximity warnings are frequently activated.

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•

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.

•

While the MRCC with Stop & Go function system is in use, it does not cancel even if the
selector lever is operated and any intended engine braking does not occur. If deceleration
is required, lower the set speed or depress the brake pedal.

•

The sound of the automatic brakes operating may be heard, however, it does not indicate
a problem.

•

The brake lights turn on while the MRCC with Stop & Go function automatic braking is
operating, however, they may not turn on while the vehicle is on a downslope at the set
vehicle speed or traveling at a constant speed and following a vehicle ahead.

▼ Mazda Radar Cruise Control with Stop & Go function (MRCC with Stop & Go

function) Display Indication

The MRCC with Stop & Go function setting status and operation conditions are indicated
on the active driving display.

Vehicle ahead display

MRCC Distance 
between vehicle 
display

MRCC Set vehicle speed

If there is a problem with the MRCC with Stop & Go function system, MRCC with Stop &
Go function warning light (amber) turns on. Check the center display to verify the problem
and then have your vehicle inspected by an Authorized Mazda Dealer.

▼ Close Proximity Warning

If your vehicle rapidly closes in on the vehicle ahead because the vehicle ahead 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, keep a safer distance from the vehicles behind you.

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NOTE
In the following cases, the warnings and brakes may not operate even if your vehicle starts
closing in on the vehicle ahead.

•

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

•

Directly after the MRCC with Stop & Go function system has been set.

•

Directly after the accelerator pedal is released.

•

Another vehicle cuts into the driving lane.

▼ Setting the System

The MRCC with Stop & Go function system operates when all of the following conditions
are met.

•

Vehicle speed is 0 km/h (0 mph) to 145 km/h (90 mph)

•

The MRCC with Stop & Go function is turned on.

•

The brake pedal is not depressed.

•

The electric parking brake (EPB) is released (electric parking brake (EPB) indicator light
is turned off).

•

There is no problem with the DSC.

•

All the doors are closed.

•

The driver's seat belt is fastened.

•

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

NOTE

•

In the following cases, the MRCC with Stop & Go function system is canceled when the
vehicle is traveling at 30 km/h (19 mph) or less and “MRCC Disabled under 30 km/h” is
displayed in the active driving display.

•

The Forward Sensing Camera (FSC) cannot detect target objects (There is problem
with the Forward Sensing Camera (FSC) or windshield is dirty).

•

There is a problem with the stop hold control function.

•

There is a problem with the electric parking brake (EPB).

•

It may not be possible to set the MRCC with Stop & Go function system directly after
starting the engine, while the DSC operation is being checked.

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Turning on the system

CANCEL switch

RES switch

OFF switch

switch

switch

MODE switch

SET- switch

SET+ switch

When the MODE switch is pressed once, the MRCC with Stop & Go function system turns
on, and the MRCC with Stop & Go function main indication (white) turns on and the
vehicle speed and the distance between the vehicles while in headway control can be set.

In addition, the MRCC with Stop & Go function system display indication is displayed on
the active driving display at the same time.

NOTE

•

If the ignition is switched off while the MRCC with Stop & Go function system is
operating, the system will be operable when the ignition is switched ON the next time.

•

The MRCC with Stop & Go function can switch to the cruise control function.
Refer to Cruise Control Function on page 4-116.

How to set the speed

1. Adjust the vehicle speed to the desired setting using the accelerator pedal.
2. Headway control begins when the SET  or SET  switch is pressed.

The set speed and the inter-vehicle distance display filled with white lines is displayed.
The MRCC with Stop & Go function main indication (white) switches to the MRCC
with Stop & Go function set indication (green) at the same time.

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Travel status

Display

During travel at constant speed

During travel under headway control

NOTE

•

If a vehicle ahead is detected while traveling at a constant speed, the vehicle-ahead
indication is displayed and headway control is performed. Additionally, when a vehicle
ahead is no longer detected, the vehicle-ahead indication turns off and the system
switches back to travel at constant speed.

•

The lowest possible speed which can be set on the MRCC with Stop & Go function system
is 30 km/h (19 mph).

•

Headway control is not possible if the vehicle ahead is driving faster than your vehicle's
set speed. Adjust the system to the desired vehicle speed using the accelerator pedal.

How to set the distance-between-vehicles during headway control

The distance-between-vehicles is set to a shorter distance by pressing the   switch. The
distance-between-vehicles is set to a longer distance by pressing the   switch. The
distance-between-vehicles can be set to 4 levels; Long, medium, short, and extremely short
distance.

Distance-between-vehicles guideline

(at 80 km/h (50 mph) vehicle speed)

Display

Long (about 50 m (164 ft))

Medium (about 40 m (131 ft))

Short (about 30 m (98 ft))

Extremely short (about 25 m (82 ft))

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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 and then the engine is started again, the
system automatically sets the distance-between-vehicles to the previous setting.

How to change the set vehicle speed

To accelerate/decelerate using the SET
switch

When you press the SET  switch, the
vehicle accelerates and when you press the
SET  switch, it decelerates.

Short press

1 km/h (1 mph)

Long press

10 km/h (5 mph)

NOTE
For example, the set vehicle speed is
changed by pressing the SET switch four
times as follows:
The vehicle speed accelerates or
decelerates by 4 km/h (4 mph).

To increase speed using accelerator
pedal

Depress the accelerator pedal and press
and release the SET  switch or SET
switch at the desired speed. If the switch is
not operated, the system returns to the set
speed after you release your foot from the
accelerator pedal.

CAUTION

The warnings and brake control do not
operate while the accelerator pedal is
depressed.

NOTE

•

The setting speed can be changed by
operating the SET  switch or SET
switch during stop hold control.

•

When accelerating using the SET  switch
while in headway control, the set vehicle
speed can be adjusted but acceleration is
not possible. If there is no longer a vehicle
ahead, acceleration continues until
reaching the set vehicle speed. For the set
vehicle speed, check the set vehicle speed
indication in the display.

•

While depressing the accelerator pedal,
the color of the MRCC with Stop & Go
function indication changes from green
to white.

Canceling the system

If any of the following operations is done,
the MRCC with Stop & Go function cancels
temporarily, the MRCC with Stop & Go
function set indication (green) switches to
the MRCC with Stop & Go function main
indication (white), and the MRCC with
Stop & Go function set indicator light
(green) turns off at the same time.

•

The OFF/CANCEL switch is pressed.

•

The brake pedal is depressed.

•

The electric parking brake (EPB) is
applied.

•

The selector lever is in the P (Park), N
(Neutral), or R (Reverse) position.

•

Any of the doors is opened.

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•

The driver's seat belt is unfastened.

 
Under the following conditions, the
MRCC with Stop & Go function cancel
indication is displayed in the active
driving display and a single beep sound is
heard.

•

The DSC has operated.

•

The Smart Brake Support (SBS) has
operated.

•

The Smart City Brake Support (SCBS)
or Advanced Smart City Brake Support
(Advanced SCBS) has operated.

•

When traveling on a downslope for a
long period of time.

•

There is a problem with the system.

•

The engine has stalled.

•

The electric parking brake (EPB) is
automatically applied during stop hold
control.

•

The radar sensor (front) cannot detect
target objects (during rain, fog, snow or
other inclement weather conditions, or
when the radiator grille is dirty).

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.

Turning off the system

Press the OFF/CANCEL switch two times
while the MRCC with Stop & Go function
system is operating to switch off the
system.

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▼ 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 stop hold control can be canceled by
performing one the following actions.

•

Press the accelerator pedal and resume driving the vehicle.

•

While forcefully depressing the brake, switch the MRCC with Stop & Go function
system off.

•

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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Resume driving information

If you do not resume driving within a few seconds after the vehicle ahead starts moving, the
active driving display vehicle-ahead indication flashes to urge the driver to resume driving.

▼ Cruise Control Function

While this function is operating, the
headway control operation is canceled and
only the cruise control function operates.
The vehicle speed can be set more than
about 25 km/h (16 mph).
Use the cruise control function on
expressways and other highways which do
not require a lot of repeated acceleration
and deceleration.

WARNING

Do not use the cruise control function in
the following locations:
Otherwise, it could lead to an accident.

Roads with sharp curves and where

vehicle traffic is heavy and there is
insufficient space between vehicles.
(Driving under these conditions using the
cruise control function is not possible)

Steep down slopes (Set speed may be

exceeded because sufficient engine
braking cannot be applied)

Slippery roads such as ice or snow-bound

roads (Tires could spin causing you to
lose vehicle control)

Always drive carefully:

The warnings and brake control will not
operate after the headway control function
is canceled and the system is switched to
only the cruise control function. Depress
the brake pedal to decelerate according to
the surrounding conditions while keeping a
safer distance from the vehicle ahead and
always driving carefully.

When Driving

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Switching to cruise control function

When the MODE switch is pressed until
the system switches to the cruise main
indication (white) while the MRCC with
Stop & Go function system is turned on,
the system switches to the cruise control
function.
When the system switches to the cruise
control function, the indicator and active
driving display notify the driver as
follows:

•

The MRCC with Stop & Go function set
indication (green) or the MRCC with
Stop & Go function main indication
(white) is turned off, and the cruise main
indication (white) is turned on.

WARNING

Always turn off the cruise control function
when it is not in use:
Leaving the cruise control function turned
on when it is not in use is dangerous as it
could operate unexpectedly, resulting in an
accident.

How to set the speed

Adjust the system to the desired vehicle
speed using the accelerator pedal.
When the SET  or SET  switch is
pressed, the cruise set indication (green) is
turned on and headway control begins.

NOTE

•

The system may not be able to maintain
the set speed constantly depending on
driving conditions such as steep up or
down slopes.

•

The speed will continue increasing while
the SET  switch is pressed and held.
The speed will continue decreasing
while the SET  switch is pressed and
held.

How to increase the set speed

The set speed can be increased using the
following operations:

To increase speed using the SET
switch

Press and hold the SET  switch and
release the switch at the desired speed.
The set speed can be adjusted
incrementally (1 km/h (1 mph)
increments) by pressing the switch and
releasing it immediately. For example, if
the switch is pressed 4 times, the set speed
increases by about 4 km/h (4 mph).

To increase speed using accelerator
pedal

Depress the accelerator pedal and press the
SET  or SET  switch at the desired
speed.
If the switch is not operated, the system
returns to the set speed after you release
your foot from the accelerator pedal.

When Driving

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How to Decrease the Set Speed

Press the SET  switch continuously and
release the switch at the desired speed.
The set speed can be adjusted
incrementally (1 km/h (1 mph)
increments) by pressing the switch and
releasing it immediately. For example, if
the switch is pressed 4 times, the set
vehicle speed decreases by about 4 km/h
(4 mph).

Canceling the function

When the cruise control function is
canceled and the RES switch is pressed
while the vehicle speed is 25 km/h (16
mph) or faster, the speed returns to the
original set speed.

Canceling using OFF/CANCEL switch

When the OFF/CANCEL switch is
pressed once, the cruise control function is
cancelled.

Automatically cancel

The cruise control function is canceled
automatically in the following cases.

•

The brake pedal is depressed.

•

The parking brake is applied.

•

The selector lever is shifted to P or N
position.

NOTE

•

If the vehicle speed decreases by about
15 km/h (9.4 mph) or more than the set
speed, the cruise control function may
be canceled.

•

When the vehicle speed is less than 21
km/h (13 mph), the cruise control
function is canceled. In this case, the
vehicle speed will not return to the
original set speed even if the vehicle is
accelerated to 25 km/h (16 mph) or
higher and the RES switch is pressed.
Reset the cruise control function.

When Driving

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Advanced Smart City Brake Support (Advanced SCBS)

*

The Advanced SCBS alerts the driver of a possible collision using the display and a warning
sound when the Forward Sensing Camera (FSC) detects a vehicle ahead or pedestrian and
determines that a collision with the object is unavoidable while the vehicle is driven at a
vehicle speed of about 4 to 80 km/h (2 to 50 mph) if the object is a vehicle ahead and about
10 to 80 km/h (6.2 to 50 mph) if the object is a pedestrian. In addition, the system reduces
damage in the event of a collision by operating the brake control (Advanced SCBS brake)
when the system determines that a collision is unavoidable. In addition, when the driver
depresses the brake pedal, the brakes are applied firmly and quickly to assist. (Brake Assist
(Advanced SCBS brake assist))
 

Forward Sensing 
Camera (FSC)

WARNING

Do not rely completely on the Advanced SCBS system:

The Advanced SCBS 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 Advanced SCBS system operates in response to a vehicle ahead, a 2-wheeled vehicle, or

a pedestrian. The system does not operate in response to obstructions such as a wall or
animals.

When Driving

i-ACTIVSENSE

*Some models.

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