How to Use the Mazda Radar Cruise Control (MRCC)

MRCC operation conditions

The MRCC can be set when all of the following conditions are met.

  • The brake pedal is not depressed.

  • The vehicle speed is about 0 km/h (0 mph) to 145 km/h (90 mph).

Setting the MRCC

  1. Press the MRCC switch to turn the system on.

    When the system is on, the MRCC standby indication (white) is displayed on the screen.

  2. Accelerate to the desired speed.

  3. Set the vehicle speed by pressing the RES switch up (SET+) or down (SET-).

    Constant speed driving starts when the vehicle speed is set. In addition, the set speed is displayed on the screen, and the MRCC standby indication (white) changes to the MRCC set indication (green) .

If a vehicle ahead is detected while traveling at a constant speed, the system switches to headway control. The vehicle ahead indication is displayed on the screen while in headway control.

Driving condition

Instrument cluster display

Active driving display indication

During travel at constant speed

During travel under headway control

  1. Set speed

  2. Vehicle ahead indication

 

  • If there is a structure on the road or an obstruction at a low height off the ground in front of the vehicle, the system may recognize it as a vehicle ahead.

  • Acceleration and deceleration by accelerator pedal operation takes priority while traveling at a constant speed or in headway control. When the accelerator pedal is released, the vehicle returns to driving at a constant speed or headway control at the set speed.

  • If a vehicle ahead is traveling at an extremely low speed, the system may not detect it correctly.

  • While driving using the MRCC, intended engine braking is not applied even if the selector lever is operated.

  • The brake lights turn on while the brakes are operating by the MRCC control.

  • The MRCC is also turned off automatically when the vehicle power is switched OFF.

  • If the distance between vehicles control is disabled using Mazda Connect, the system switches to the cruise control. At this time, the MRCC switch functions as the cruise control switch.

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

    If the vehicle power is switched OFF while the distance between vehicles control is disabled, the distance between vehicles control is enabled automatically the next time the vehicle power is switched ON.

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If the vehicle ahead stops during headway control, your vehicle in headway control also stops. When the vehicle is stopped, the MRCC indicator light in the instrument cluster turns on.

When the vehicle ahead accelerates from a stop and one of the following operations is performed, your vehicle starts driving.

  • Press the RES switch.

  • Depress the accelerator pedal.

If you do not start driving the vehicle after the vehicle ahead has resumed driving, the system urges the driver to resume driving.

 

  • If the vehicle ahead resumes driving within 3 seconds after the vehicle was stopped by the system, your vehicle also resumes driving automatically.

  • If the vehicle is stopped by the system continuously for 10 minutes or longer, the parking brake is applied automatically. At this time, the MRCC is canceled.

  • Even if the MRCC is canceled while the vehicle is stopped, the vehicle is held in its stopped position.

    Refer to AUTOHOLD (Search).

  • If the MRCC is canceled while the vehicle is stopped and there is no vehicle ahead, you cannot resume driving the vehicle using the RES switch. Depress the accelerator pedal and start driving the vehicle.

  • If the i-stop operation conditions are met while the vehicle is stopped, the i-stop function operates without depressing the brake pedal. The engine restarts automatically when you start driving the vehicle.

    Refer to i-stop (Search).

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Changing the set vehicle speed

Changing the set vehicle speed using the RES switch

Press the RES switch up (SET+) or down (SET-) to the desired speed.

  • Press and release immediately: 1 km/h (1 mph)

  • Press and hold: 10 km/h (5 mph)

Changing the set vehicle speed using the accelerator pedal

Depress the accelerator pedal until the vehicle speed reaches the desired speed, then press the RES switch up (SET+) or down (SET-).

Setting the distance-between-vehicles during headway control

  1. Press the CANCEL switch up (longer distance) or down (shorter distance).

MRCC is not operating (white)

Distance-between-vehicles guideline

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

Instrument cluster display

Active driving display indication

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))

MRCC is operating (green)

Distance-between-vehicles guideline

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

Instrument cluster display

Active driving display indication

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))

 

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

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

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Close proximity warning

If your vehicle approaches a vehicle ahead while in headway control, a warning sound and a display cautions you.

  1. “Depress Brake Pedal”

 

The close proximity warning may not be activated in the following cases.

  • The vehicle is driven at the same speed as the vehicle ahead.

  • Directly after the MRCC is set.

  • Immediately after the accelerator pedal is released.

  • Another vehicle cuts into the driving lane.

  • Do not use the MRCC under conditions in which the close proximity warnings are frequently activated.

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The MRCC is canceled temporarily

If any of the following conditions is met, the MRCC is canceled temporarily.

  • The brake pedal is depressed.

  • The CANCEL switch is pressed one time.

  • The DSC has operated.

  • The Smart Brake Support (SBS) has operated.

  • The front radar sensors cannot detect target objects.

  • The parking brake is applied.

  • Any door is opened.

  • The driver’s seat belt is unfastened.

  • The frequency of the braking operation by the MRCC is high.

If the MRCC is temporarily canceled, it will resume operation at the previously set speed by pressing the RES switch.

Turning off the MRCC

Press the MRCC switch.

The MRCC set indication (green) /MRCC standby indication (white) turns off, and the MRCC turns off.

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