When Drivingi-ACTIVSENSEMazda Radar Cruise Control (MRCC) (Some Models)

Mazda Radar Cruise Control (MRCC) (Some Models)

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 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.

 

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 specifically, 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 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 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 traffic is heavy and there is insufficient 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 tires 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.

Close Warning

 

If the vehicle is towed or you are towing something, switch the Mazda Radar Cruise Control (MRCC) system off to prevent an incorrect operation.

Close Caution

 

  • The Mazda Radar Cruise Control (MRCC) system operates when all of the following conditions are met.

    • The vehicle speed is 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) is not malfunctioning.

    • The Dynamic Stability Control (DSC) is operating normally.

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

    • All doors are closed.

    • The driver's seat belt is fastened.

  • 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 traveling 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.

  • 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 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.

  • If there is a problem with the Mazda Radar Cruise Control (MRCC) system, a message is displayed in 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 (Search).

  • The headway control operation can be canceled and the system can be switched to only cruise control. Refer to Cruise Control Function (Search).

Close Note
When Drivingi-ACTIVSENSEMazda Radar Cruise Control (MRCC) (Some Models)

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 multi-information display and the active driving display.

When Drivingi-ACTIVSENSEMazda Radar Cruise Control (MRCC) (Some Models)

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.

When Drivingi-ACTIVSENSEMazda Radar Cruise Control (MRCC) (Some Models)

Setting the System

When the MODE switch is pressed, the Mazda Radar Cruise Control (MRCC) main indication (white) turns on and the vehicle speed and the distance between vehicles while in headway control can be set.

 

  • 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.

  • When the MODE switch is pressed while the Mazda Radar Cruise Control (MRCC) system is turned on, the system switches to the cruise control function.

Close Note

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 are displayed. The Mazda Radar Cruise Control (MRCC) set indication (green) is indicated simultaneously.

Travel status

Multi-information display

Active driving display

During travel at constant speed

During travel under headway control

 

  • 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.

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

Close Note

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 multi-information display

Indication on active driving display*1

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))

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

 

  • 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.

Close Note

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)

 

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).

Close Note

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.

 

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

Close Caution

 

  • 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 multi-information display and the active driving display.

  • When depressing the accelerator pedal, the inter-vehicle distance display in the multi-information display 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 canceled.

Close Note

To Deactivate

The Mazda Radar Cruise Control (MRCC) is deactivated when the OFF/CAN switch is pressed twice.

When the system is temporarily canceled

In the following cases, the Mazda Radar Cruise Control (MRCC) is temporarily canceled, the Mazda Radar Cruise Control (MRCC) set indication (green) is turned off, and the Mazda Radar Cruise Control (MRCC) main indication (white) is turned on.

  • The OFF/CAN switch is pressed once.

  • The brake pedal is depressed.

  • The parking brake is applied.

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

  • Any door is opened.

  • The driver's seat belt is unfastened.

  • In the following cases, the “Mazda Radar Cruise Control Canceled” indication is displayed and the beep sounds one time.

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

    • The DSC has operated.

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

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

    • The Smart Brake Support (SBS) has operated.

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

    • There is a problem with the system.

 

  • 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.

  • If you have temporarily canceled the Mazda Radar Cruise Control (MRCC), you can return to your previously set speed by pressing the RES switch and after all of the operation conditions have been met.

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

Close Note
When Drivingi-ACTIVSENSEMazda Radar Cruise Control (MRCC) (Some Models)

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.

 

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.

Close Warning

Switching to cruise control function

When the MODE switch is pressed while the Mazda Radar Cruise Control (MRCC) system is turned on, the system switches to the cruise control function.

When the system switches to the cruise control function, the indicator and multi-information display notify the driver as follows:

  • The Mazda Radar Cruise Control (MRCC) set indication (green) or the Mazda Radar Cruise Control (MRCC) main indication (white) is turned off, and the cruise main indication (white) is turned on.

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

 

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.

Close Warning

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.

 

  • 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.

Close Note

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.

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).

Cancelling the function

Cancelling using OFF/CAN switch

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

Cancelling using MODE switch

When the MODE switch is pressed, the cruise control function is canceled and the headway control function is made available for operation.

The cruise control function is canceled automatically in the following cases. If the RES switch is pressed while the vehicle speed is 25 km/h (16 mph) or higher, the speed returns to the original set speed.

  • The OFF/CAN switch is pressed once.

  • The brake pedal is depressed.

  • The parking brake is applied.

  • The selector lever is shifted to P or N position.

 

  • 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.

Close Note