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, which frees the driver from having to constantly use the accelerator or brake pedals.
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.
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
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 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.
If the vehicle is towed or you are towing something, switch the Mazda Radar Cruise Control (MRCC) system off to prevent an incorrect operation.
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 Dynamic Stability Control (DSC) is operating normally.
The shift lever is in a position other than reverse (R) or neutral (N).
The clutch pedal is not depressed.
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.
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) turns on when the system has a malfunction.
Refer to Warning/Indicator Lights (Search).
The setting status and operation conditions of the Mazda Radar Cruise Control (MRCC) system are indicated in the active driving display.
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.
When the ON switch is pressed, 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 display of the instrument cluster.
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.
How to Set the Speed
Adjust the vehicle speed to the desired setting using the accelerator pedal.
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.
Travel status |
Display |
---|---|
During travel at constant speed |
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During travel under headway control |
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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.
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)) |
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Medium (about 40 m (131 ft)) |
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Short (about 30 m (98 ft)) |
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Extremely short (about 25 m (82 ft)) |
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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 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.
European models |
Except European models |
|
---|---|---|
Short press |
1 km/h (1 mph) |
5 km/h (5 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:
(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).
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.
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 active driving 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 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. 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.
(Automatic transaxle)
The selector lever is shifted to park (P), neutral (N) or reverse (R).
(Manual transaxle)
The shift lever is in the reverse (R) position .
In the following cases, 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 travelling on a down slope for a long period of time.
There is a problem with the system.
(Manual transaxle)
The shift lever is shifted to neutral (N) for a certain period of time.
The clutch is depressed for a certain period of time.
The engine stalls.
The Mazda Radar Cruise Control (MRCC) system may be cancelled during rain, fog, snow or other inclement weather conditions, or the front surface of the radiator grille is dirty.
If you have temporarily cancelled 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 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 RES switch is pressed.
The shift-up or shift-down request display in the active driving display may be displayed while the Mazda Radar Cruise Control (MRCC) system is operating. When this occurs, shift gears because the gear position is not appropriate.
Request |
Indication on display |
---|---|
Shift up |
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Shift down |
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If 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 cancelled or engine damage could occur.
If 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 cancelled or engine stalling could occur.
Your vehicle is equipped with radar sensors (rear). The following systems also use the radar sensors (rear).
Blind Spot Monitoring system (BSM)
Rear Cross Traffic Alert (RCTA)
The radar sensors (rear) function by detecting the radio waves reflected off a vehicle approaching from the rear or an obstruction sent from the radar sensor.
The radar sensors (rear) are installed inside the rear bumper, one each on the left and right sides.
Always keep the surface of the rear bumper near the radar sensors (rear) clean so that the radar sensors (rear) operate normally. Also, do not apply items such as stickers.
Refer to Exterior Care (Search).
If the rear bumper receives a severe impact, the system may no longer operate normally. Stop the system immediately and have the vehicle inspected at an Authorised Mazda Dealer.
The detection ability of the radar sensors (rear) has limitations. In the following cases, the detection ability may lower and the system may not operate normally.
The rear bumper near the radar sensors (rear) has become deformed.
Snow, ice or mud adheres to the radar sensors (rear) on the rear bumper.
Under bad weather conditions such as rain, snow and fog.
Under the following conditions, the radar sensors (rear) cannot detect target objects or it may be difficult to detect them.
Stationary objects on a road or a road side such as small, two-wheeled vehicles, bicycles, pedestrians, animals, and shopping carts.
Vehicle shapes which do not reflect radar waves well such as empty trailers with a low vehicle height and sports cars.
Vehicles are shipped with the direction of the radar sensors (rear) adjusted for each vehicle to a loaded vehicle condition so that the radar sensors (rear) detect approaching vehicles correctly. If the direction of the radar sensors (rear) has deviated for some reason, have the vehicle inspected at an Authorised Mazda Dealer.
For repairs or replacement of the radar sensors (rear), or bumper repairs, paintwork, and replacement near the radar sensors, consult an Authorised Mazda Dealer.
Turn off the system while pulling a trailer or while an accessory such as a bicycle carrier is installed to the rear of the vehicle. Otherwise, the radio waves emitted by the radar will be blocked causing the system to not operate normally.
The radar sensors are regulated by the relevant radio wave laws of the country in which the vehicle is driven. If the vehicle is driven abroad, authorization from the country in which the vehicle is driven may be required.