Get When Driving -> Mazda Radar Cruise Control (MRCC) Guide for Mazda 3 4 Door Third Generation (2014-2018)

When Driving

Mazda Radar Cruise Control (MRCC)

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 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 sufﬁcient 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 speciꢀcally, 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 suꢁciently 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 safe distance from

vehicles ahead or on-coming vehicles.

*Some models.

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When Driving

Mazda Radar Cruise Control (MRCC)

Do not use the Mazda Radar Cruise Control (MRCC) system in the following locations.

Otherwise, it could lead to an accident:

ꢀ¾ꢀ

Roads with sharp curves and where vehicle traꢁc is heavy and there is insuꢁcient

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).

ꢀ¾ꢀ

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).

ꢀ¾ꢀ

Slippery roads such as ice or snow-bound roads (The tires could spin causing you to

lose vehicle control).

ꢀ¾ꢀ

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 oꢀ

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 oꢂ to prevent an incorrect operation.

NOTE

^ꢀyꢀThe Mazda Radar Cruise Control (MRCC) system operates when all of the following

conditions are met.

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

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

^ꢀyꢀThe parking brake is not applied.

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

^ꢀyꢀThe Dynamic Stability Control (DSC) is operating normally.

^ꢀ(Manual transaxle)

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

^ꢀyꢀThe clutch pedal is not depressed.

^ꢀ(Automatic transaxle)

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

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When Driving

Mazda Radar Cruise Control (MRCC)

^ꢀyꢀIn the following cases, the warnings may not activate even if your vehicle starts closing in

on the vehicle ahead.

^ꢀyꢀYou are driving at the same speed as the vehicle ahead.

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

^ꢀyꢀWhen the accelerator pedal is depressed or directly after the accelerator pedal is

released.

^ꢀyꢀAnother vehicle cuts into the driving lane.

^ꢀyꢀThe following are not detected as physical objects.

^ꢀyꢀVehicles approaching in the opposite direction

^ꢀyꢀPedestrians

^ꢀyꢀStationary objects (stopped vehicles, obstructions)

^ꢀyꢀIf a vehicle ahead is traveling at an extremely low speed, the system may not detect it

correctly.

^ꢀyꢀDuring headway control travel, do not set the system on two-wheeled vehicles such as

motorcycles and bicycles.

^ꢀyꢀDo not use the Mazda Radar Cruise Control (MRCC) system under conditions in which

the close proximity warnings are frequently activated.

^ꢀyꢀDuring 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.

^ꢀyꢀWhile 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.

^ꢀyꢀThe 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 traveling at a constant speed and following a

vehicle ahead.

^ꢀyꢀThe Mazda Radar Cruise Control (MRCC) warning light (amber) ﬂashes when the system

has a malfunction.

^ꢀRefer to Warning Lights on page 4-21.

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When Driving

Mazda Radar Cruise Control (MRCC)

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 Set vehicle

speed

MRCC Distance between vehicle display

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 safe distance from the vehicle ahead.

Additionally, always keep a safe distance

from the vehicles behind you.

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When Driving

Mazda Radar Cruise Control (MRCC)

Setting the System

To Activate

To activate the system, press the ON switch.

CANCEL switch

RESUME switch

Switch

Cruise control

SET+/SET- switch

OFF switch

ON 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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When Driving

Mazda Radar Cruise Control (MRCC)

NOTE

How to Set the Speed

^ꢀyꢀIf 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.

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 are

displayed. The Mazda Radar Cruise

Control (MRCC) indicator light (green)

is indicated simultaneously.

^ꢀyꢀIf 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.

Travel status

Display

During travel at constant

speed

During travel under

headway control

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When Driving

Mazda Radar Cruise Control (MRCC)

How to Set the Distance Between

Vehicles During Headway Control

Changing the Set Vehicle Speed

Changing the set vehicle speed using the

SET /SET switch

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.

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.

Short press

Long press

1 km/h (1 mph)

10 km/h (5 mph)

Distance-between-

vehicles guideline

Indication on display

(at 80 km/h (50 mph)

vehicle speed)

NOTE

For example, the set vehicle speed is

changed by pressing the SET /SET

switch four times as follows:

Long (about 50 m (164

ft))

The vehicle speed accelerates or

decelerates by 4 km/h (4 mph).

Medium (about 40 m

(131 ft))

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.

Short (about 30 m (98

ft))

Extremely short (about

25 m (82 ft))

CAUTION

The warnings and brake control do not

operate while the accelerator pedal is

depressed.

NOTE

^ꢀyꢀThe distance between vehicles differs

depending on the vehicle speed, and the

slower the vehicle speed, the shorter the

distance.

^ꢀyꢀWhen 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.

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When Driving

Mazda Radar Cruise Control (MRCC)

NOTE

When the system is temporarily

canceled

^ꢀyꢀWhen 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.

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.

^ꢀyꢀWhen depressing the accelerator pedal,

the inter-vehicle distance display in

the display in the instrument cluster

changes to the white-line display.

^ꢀyꢀThe 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.

ꢀyꢀ

The CANCEL switch is pressed.

ꢀyꢀ

The brake pedal is depressed.

ꢀyꢀ

The parking brake is applied.

ꢀyꢀ

The selector lever is shifted to park (P),

neutral (N) or reverse (R) (automatic

transaxle).

ꢀyꢀ

The shift lever is in the reverse (R)

position (manual transaxle).

ꢀyꢀ

In the following cases, the “MRCC

Cancelled” indication is displayed and

the beep sounds one time.

ꢀ

^yThe vehicle speed decreases to less

than 25 km (16 mph).

To Deactivate

ꢀ

^yThe DSC has operated.

The Mazda Radar Cruise Control (MRCC)

is canceled when the OFF switch is

pressed.

ꢀ

^yThe TCS has operated for a certain

period of time.

ꢀ

^yThe Smart City Brake Support (SCBS)

has operated.

ꢀ

^yWhen traveling on a down slope for a

long period of time.

ꢀ

^yThere is a problem with the system.

ꢀ

^yThe engine stalls.

^ꢀ(Manual transaxle)

ꢀ

^yThe shift lever is shifted to neutral (N)

for a certain period of time.

ꢀ

^yThe clutch is depressed for a certain

period of time.

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When Driving

Mazda Radar Cruise Control (MRCC)

NOTE

Shift-up/Shift-down Request

Display (Manual Transaxle)

^ꢀyꢀThe 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.

^ꢀyꢀIf the Mazda Radar Cruise Control

(MRCC) system has been temporarily

canceled, you can return to the

The shift-up or shift-down request display

in the display of the instrument cluster

may be displayed while the Mazda

Radar Cruise Control (MRCC) system is

operating. When this occurs, shift gears

because the current gear position is not

appropriate.

previously set vehicle speed by pressing

the RESUME switch after the following

conditions have been met.

Request

Indication on display

^ꢀyꢀAll of the Mazda Radar Cruise

Control (MRCC) operation

conditions have been met.

Shift up

^ꢀyꢀA certain period of time has elapsed

since the system was automatically

canceled while driving for a long

time on a down slope.

Shift down

^ꢀyꢀIf 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.

^ꢀyꢀIf 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

RESUME switch is pressed.

NOTE

^ꢀyꢀIf 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.

^ꢀyꢀIf 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.

Radar Sensor Handling

The Mazda Radar Cruise Control (MRCC)

radar sensor is installed on the backside of

the radiator grille.

Refer to Radar Sensor on page 4-64.

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When Driving -> Mazda Radar Cruise Control (MRCC) for Your Mazda 3 4 Door Third Generation (2014-2018)

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