2015 MAZDA MODEL 3 HATCHBACK Owners Manual (in English)

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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, which frees the driver 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 suffi cient distance between the vehicles.
The possible vehicle speed setting ranges are as follows:
 


(European models)
 About 30 km/h (19 mph) to 200 km/h (124 mph)



(Except European models)
 About 30 km/h (19 mph) to 145 km/h (90 mph)
Use the Mazda Radar Cruise Control (MRCC) system on expressways and other highways
which do not require a lot of repeated acceleration and deceleration.
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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:
 
 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).
  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 (The tyres could spin causing you to
lose vehicle control).
  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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NOTE
  The Mazda Radar Cruise Control (MRCC) system operates when all of the following
conditions are met.
 


 The vehicle speed is as follows: 



(European models)
 About 30 km/h (19 mph) to 200 km/h (124 mph) 


(Except European models)
 About 30 km/h (19 mph) to 145 km/h (90 mph) 
 



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



 The parking brake is not applied.



 The Smart Brake Support (SBS) warning light (amber) does not illuminate.



 The Dynamic Stability Control (DSC) is operating normally.

(Manual transaxle)




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



 The clutch pedal is not depressed.

(Automatic transaxle)




 The selector lever is in the drive (D) position or manual (M) position (manual
mode).
 
 In the following cases, the warnings may not activate even if your vehicle starts
closing in on the vehicle ahead.
 


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



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



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


 Another vehicle cuts into the driving lane. 

 The following are not detected as physical objects.




 Vehicles approaching in the opposite direction



 Pedestrians



 Stationary objects (stopped vehicles, obstructions) 

 If a vehicle ahead is travelling at an extremely low speed, the system may not detect it
correctly.
  During headway control travel, do not set the system on two-wheeled vehicles such as
motorcycles and bicycles.
  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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NOTE
  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 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.
  The brake lights are illuminated while the Mazda Radar Cruise Control (MRCC)
automatic braking is operating, however, they may not be illuminated while the
vehicle is on a down slope at the set vehicle speed or travelling at a constant speed and
following a vehicle ahead.
  The Mazda Radar Cruise Control (MRCC) warning light (amber) fl ashes when the
system has a malfunction.
 Refer to Warning Lights on page 4-41 .
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
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Close Proximity Warning
If your vehicle rapidly closes in on the vehicle ahead because the vehicle applies the brakes
suddenly while you are travelling 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.
Setting the System
To Activate
With adjustable speed limiter
To activate the system, press the ON/OFF switch.
Without adjustable speed limiter
To activate the system, press the ON switch.
ON/OFF switch
OFF switch ON switch Without Adjustable Speed Limiter With Adjustable Speed Limiter
CANCEL switch CANCEL switch
Switch SwitchRESUME
switchRESUME
switch
Switch Switch
SET+/SET- switch SET+/SET- switch
When the system is activated, 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.
NOTE
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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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 fi 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
NOTE
  If a vehicle ahead is detected while
travelling 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.
  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.
 (European models) When switching to a passing lane and
operating the direction indicator, the
system provides more acceleration
automatically if it determines that
more acceleration is required. Drive
while being careful of the road ahead
because you could approach the
vehicle ahead too closely.
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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))
Short (about 30 m (98
ft))
Extremely short (about
25 m (82 ft))
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.
Changing the Set Vehicle Speed
Changing the set vehicle speed using the
SET
/ 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
/ SET switch is pressed.
European
models Except
European
models
Short press 1 km/h (1 mph) 5 km/h (5 mph)
Long press 10 km/h (5 mph)
NOTE
For example, the set vehicle speed is
changed by pressing the SET
/ SET
switch four times as follows:
(European models)
The vehicle speed accelerates or
decelerates by 4 km/h (4 mph).
(Except European models)
The vehicle speed accelerates or
decelerates by 20 km/h (20 mph).
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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.
NOTE
  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.
  When depressing the accelerator
pedal, the inter-vehicle distance
display in the display in the
instrument cluster changes to the
white-line display.
  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 cancelled.
To Deactivate
With adjustable speed limiter
The Mazda Radar Cruise Control (MRCC)
is cancelled when the ON/OFF switch is
pressed.
Without adjustable speed limiter
The Mazda Radar Cruise Control (MRCC)
is cancelled when the OFF switch is
pressed.
When the system is temporarily
cancelled
In the following cases, the Mazda Radar
Cruise Control (MRCC) system is
temporarily cancelled 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.
 


 The CANCEL switch is pressed.



 The brake pedal is depressed.



 The parking brake is applied.



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


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