cruise control MAZDA MODEL 3 HATCHBACK 2016 (in English) User Guide

4–75
When Driving
i-ACTIVSENSE
Camera and Sensors
F o r w a r d s e n s i n g c a m e r a ( F S C )
The Forward Sensing Camera (FSC) determines the conditions ahead of the vehicle while
traveling at night and detects traf¿ c lanes. The following systems also use the Forward
Sensing Camera (FSC).
 


y High Beam Control system (HBC)



y Lane Departure Warning System (LDWS)
The Forward Sensing Camera (FSC) is installed at the top of the windshield near the
rearview mirror.
Refer to Forward Sensing Camera (FSC) on page 4-111 .
Radar sensor (front)
The radar sensor (front) functions by detecting the radio waves reÀ ected off a vehicle ahead
sent from the radar sensor. The following systems also use the radar sensor (front).
 


y Mazda Radar Cruise Control (MRCC)



y Forward Obstruction Warning (FOW)
The radar sensor (front) is mounted behind the radiator grille.
Refer to Radar Sensor (Front) on page 4-113 .
Laser sensor (front)
The laser sensor (front) emits a near-infrared laser beam and receives the beam reÀ ected
off the reÀ ective surface of a vehicle in front, and the detected beam is then used for
measurement. The following systems also use the laser sensor (front).
 


y Smart City Brake Support (SCBS)
The laser sensor (front) is installed at the top of the windshield near the rearview mirror.
Refer to Laser Sensor (Front) on page 4-116 .
Radar sensors (rear)
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 sensors. The following
systems also use the radar sensors (rear).
 


y Blind Spot Monitoring (BSM) System



y Rear Cross Traf¿ c Alert (RCTA)
The radar sensors (rear) are installed inside the rear bumper, one each on the left and right
sides.
Refer to Radar Sensors (Rear) on page 4-118 .
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4–98
When Driving
i-ACTIVSENSE
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.

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).

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4–99
When Driving
i-ACTIVSENSE
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.

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 Forward Obstruction Warning (FOW) warning light (amber) does not illuminate.



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



y The shift lever is in a position other than reverse (R) or neutral (N).



y The clutch pedal is not depressed. 
 (Automatic transaxle) 



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.
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4–10 0
When Driving
i-ACTIVSENSE
 


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 (automatic transaxle)/shift lever (manual transaxle) 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 4-20 .
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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4–101
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
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.

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4–102
When Driving
i-ACTIVSENSE
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 ¿ lled with white lines are
displayed. The Mazda Radar Cruise
Control (MRCC) indicator light (green)
is indicated simultaneously.


Travel status Display
During travel at constant
speed


During travel under
headway control



N O T E
 


y 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.
 


y If you are driving the vehicle at a speed
faster than the set speed, headway
control on the vehicle ahead is not
possible 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 each time the
switch is
pressed. 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) Indication on display
Long (about 50 m (164
ft))


Medium (about 40 m
(131 ft))


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4–103
When Driving
i-ACTIVSENSE
Distance-between-
vehicles guideline
(at 80 km/h (50 mph)
vehicle speed) Indication on display
Short (about 30 m (98
ft))


Extremely short (about
25 m (82 ft))



N O T E
 


y The distance between vehicles differs
depending on the vehicle speed, and the
slower the vehicle speed, the shorter the
distance.
 


y 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.

Changing the Set Vehicle Speed
Changing the set vehicle speed using the
SET switch
Press the SET
switch to accelerate.
Press the SET
switch to decelerate.
The set vehicle speed changes as follows
each time the SET switch is pressed.

Short press 1 km/h (1 mph)
Long press 10 km/h (5 mph)

N O T E
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 accelerate using the accelerator
pedal
Depress the accelerator pedal and press
and release the SET
or SET switch at
the desired speed. If a switch cannot be
operated, the system returns to the set
speed when you release your foot from the
accelerator pedal.
CAUTION
The warnings and brake control do not
operate while the accelerator pedal is
depressed.

N O T E
 


y 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. Check the set vehicle speed by
viewing the set vehicle speed display in
the active driving display.
 


y When depressing the accelerator pedal,
the inter-vehicle distance display in the
active driving display changes to the
white-line display.
 


y The minimum settable speed is 30 km/h
(19 mph). If the set vehicle speed
reaches 30 km/h (19 mph) using the
switch operation, constant speed travel
is maintained at about 30 km/h (19
mph) even if the SET
switch is
pressed. The Mazda Radar Cruise
Control (MRCC) system is not canceled.

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4–104
When Driving
i-ACTIVSENSE
To Deactivate
The Mazda Radar Cruise Control (MRCC)
is canceled when the OFF switch is
pressed.
When the system is temporarily
canceled
In the following cases, the Mazda Radar
Cruise Control (MRCC) system is
temporarily canceled and the “MRCC
Cancelled” indication is displayed in
the display in the instrument cluster.
The Mazda Radar Cruise Control
(MRCC) indicator light (green) turns off
simultaneously.
 


y The CANCEL switch is pressed.



y The brake pedal is depressed.



y The parking brake is applied.



y (Automatic transaxle) 
 The selector lever is shifted to park (P),
neutral (N) or reverse (R).
 


y (Manual transaxle) 
 The shift lever is in the reverse (R)
position .

 


y In the following cases, the ”MRCC
Cancelled” indication is displayed and
the beep sounds one time.
 

y
 The vehicle speed decreases to less
than 25 km (16 mph).
 

y
 The DSC has operated.


y
 The TCS has operated for a certain
period of time.
 

y
 The Smart City Brake Support (SCBS)
has operated.
 

y
 When traveling on a down slope for a
long period of time.
 

y
 There is a problem with the system. 
 (Manual transaxle) 


y
 The shift lever is shifted to neutral (N)
for a certain period of time.
 

y
 The clutch is depressed for a certain
period of time.
 

y
 The engine stalls.

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4–105
When Driving
i-ACTIVSENSE
N O T E
 


y The Mazda Radar Cruise Control
(MRCC) system may be canceled during
rain, fog, snow or other inclement
weather conditions, or the front surface
of the radiator grille is dirty.
 


y If the Mazda Radar Cruise Control
(MRCC) system has been temporarily
canceled, you can return to the
previously set vehicle speed by pressing
the RESUME switch after the following
conditions have been met.
 y All of the Mazda Radar Cruise
Control (MRCC) operation
conditions have been met.
 y A certain period of time has elapsed
since the system was automatically
canceled while driving for a long
time on a down slope.
 y If the SET/SET or RESUME switch
is pressed before a certain period of
time has elapsed since the system was
automatically canceled while driving
for a long time on a down slope,
“MRCC Not available” is displayed in
the display.
 


y If the OFF switch is pressed to cancel
the Mazda Radar Cruise Control
(MRCC), the system does not return to
the previously set speed even if the RES
switch is pressed.

Shift-up/Shift-down Request
Display (Manual Transaxle)
The shift-up or shift-down request display
in the active driving display may be
displayed while the Mazda Radar Cruise
Control (MRCC) system is operating.
When this occurs, shift gears because the
gear position is not appropriate.

Request Indication on display
Shift up


Shift down



N O T E
 


y If the gears are not shifted up even
though the shift-up request indication
is displayed, load will be applied
to the engine and the Mazda Radar
Cruise Control (MRCC) system may
be automatically canceled or engine
damage could occur.
 


y If the gears are not shifted down even
though the shift-down request indication
is displayed, the Mazda Radar Cruise
Control (MRCC) system may be
automatically canceled or engine
stalling could occur.

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4–113
When Driving
i-ACTIVSENSE
Radar Sensor (Front)
Your vehicle is equipped with a radar sensor (front).
The following systems also use the radar sensor (front).
 


y Mazda Radar Cruise Control (MRCC)



y Forward Obstruction Warning (FOW)
The radar sensor (front) functions by detecting the radio waves reÀ ected off a vehicle ahead
or an obstruction sent from the radar sensor (front).
The radar sensor (front) is mounted behind the front emblem.


Radar sensor (front)

If the Forward Obstruction Warning (FOW) warning light (amber) is illuminated, the area
around the radar sensor (front) may be dirty. Refer to “Warning Guidance” in the center
display (Type B audio).
Refer to If a Warning Light Turns On or Flashes on page 7-24 .
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