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 4-99)

- Forward Sensing Camera (FSC) (page 4-256)

- Radar sensor (front) (page 4-261)



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WARNING

WARNING

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.


*Some models. 4-145


- 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.


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CAUTION

CAUTION

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.


- 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.

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 multi-information display and the active driving display.


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Active driving display

Vehicle ahead display

Active driving display

Vehicle ahead display

Active driving display

Vehicle ahead display

MRCC Distance between vehicle display


MRCC Set

vehicle speed

MRCC Distance between vehicle display


MRCC Set

vehicle speed

MRCC Distance between vehicle display


MRCC Set

vehicle speed

Multi-information Display

Vehicle ahead display

Multi-information Display

Vehicle ahead display

Multi-information Display

Vehicle ahead display

*1

*1

*1

MRCC

Distance between vehicle display

MRCC

Distance between vehicle display

MRCC

Distance between vehicle display

MRCC Set vehicle speed

MRCC Set vehicle speed

MRCC Set vehicle speed

Instrument cluster (Type A)


*1: If the indication on the active driving display has been turned off using the personalization features, the indication is displayed on the multi-information display.


Instrument cluster (Type B)


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Active driving display

Vehicle ahead display MRCC Distance between vehicle display



Multi-information display


*1

MRCC Set

vehicle speed


Vehicle ahead display

MRCC Distance between vehicle display


MRCC Set vehicle speed Vehicle ahead display

*1: If the indication on the active driving display has been

turned off using the personalization features, the indication is displayed on the multi-information display.

If there is a problem with the MRCC with Stop & Go function system, a message is displayed on the multi-information display. Check the center display to verify the problem and then have your vehicle inspected by an Authorized Mazda Dealer.

Refer to Message Indicated on Display on page 7-39.

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 parking brake 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 (20 mph) or less and “Mazda Radar Cruise Control disabled under 30 km/h (20 mph)” is displayed in the multi-information 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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Type A

Type A

Type A

switch


switch

switch


switch

switch


switch

SET+ switch RES switch SET- switch

SET+ switch RES switch SET- switch

SET+ switch RES switch SET- switch

MODE switch

MODE switch

MODE switch

CANCEL switch OFF switch

CANCEL switch OFF switch

CANCEL switch OFF switch

Type B


switch CANCEL switch

switch

Type B


switch CANCEL switch

switch

Type B


switch CANCEL switch

switch

SET+ switch RES switch SET- switch

SET+ switch RES switch SET- switch

SET+ switch RES switch SET- switch

MRCC switch

MRCC switch

MRCC switch

Turning on the system


Steering wheel (Type A)

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.

Steering wheel (Type B)

When the MRCC 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.


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In addition, the MRCC with Stop & Go function system display indication is displayed on the multi-information display and 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 4-157.


How to set the speed

1. Adjust the vehicle speed to the desired setting using the accelerator pedal.

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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

Indication on multi-information display

Indication on active driving display

Type A

Type B


During travel at constant speed


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During travel under head‐ way control


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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 Steering wheel (Type A)

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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.

Steering wheel (Type B)

The distance-between-vehicles can be set to 4 levels; Long, medium, short, and extremely short distance.

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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.


Distance-between-vehi‐ cles guideline

(at 80 km/h (50 mph) vehicle speed)

Indication on multi-information display


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Indication on active driv‐ ing display*1


Type A


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Type B


Long (about 50 m (164 ft))


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Medium (about 40 m (131 ft))


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Short (about 30 m (98 ft))


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Distance-between-vehi‐ cles guideline

(at 80 km/h (50 mph) vehicle speed)

Indication on multi-information display


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Indication on active driv‐ ing display*1


Type A


Type B


Extremely short (about 25 m (82 ft))


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*1 Displays a pop-up image in the active driving display only when the driver operates the switch.

NOTE

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

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- 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

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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

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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.


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CAUTION

CAUTION

CAUTION

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


NOTE

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

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- 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.


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

Canceling the system

When the following operations are performed, the MRCC with Stop & Go function system is canceled, and the MRCC with Stop & Go function set indication (green) switches to the MRCC with Stop & Go function main indication (white) at the same time.

- The CANCEL switch is pressed.

- The brake pedal is depressed.

- The parking brake is applied.

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


Under the following conditions, the MRCC with Stop & Go function cancel indication is displayed in the

multi-information display and a single beep sound is heard.

- The DSC has operated.

- The Smart Brake Support (SBS) has operated.

- The Smart City Brake Support [Forward] (SCBS F) 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.

- Any of the doors is opened.

- The driver's seat belt is unfastened.

- The parking brake 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 CANCEL switch 2 times while the MRCC with Stop & Go function system is operating to switch off the system.

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Stop Hold Control

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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.



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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.


Resume driving information

If you do not resume driving within a few seconds after the vehicle ahead starts moving, the multi-information 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).

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WARNING

WARNING

WARNING

Use the cruise control function on expressways and other highways which do not require a lot of repeated acceleration and deceleration.



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.

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Switching to cruise control function Steering wheel (Type A)

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.

Steering wheel (Type B)

Use Mazda Connect to switch to the cruise control function.

Refer to the Settings section in the Mazda Connect Owner's Manual.


When the system switches to the cruise control function, the indicator and

multi-information 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.

- A message is displayed in the multi-information display.




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WARNING

WARNING

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.

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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.

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- 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:

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To increase speed using the SET switch

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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

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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.

How to Decrease the Set Speed

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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 CANCEL switch

When the 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.

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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.


Rear Cross Traffic Alert (RCTA)

(Page 122)

Rear Cross Traffic Alert (RCTA)* ‌The RCTA system is designed to assist the driver in checking the area to the rear of the vehicl...

Traffic Jam Assist (TJA)

(Page 124)

Traffic Jam Assist (TJA)* ‌The TJA is a system which consists of a headway control function and a steering assist function f

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