MAZDA RADAR CRUISE CONTROL (MRCC)
id921000000300
Purpose of Adoption
• To decrease the driving load on the driver, the MRCC system emits radio waves from the radar to recognize the distance and speed of a vehicle ahead, and controls engine braking automatically to maintain headway control with the vehicle ahead.
Service Point
• Radar is emitted from the radar set in the front of the vehicle to detect vehicles and obstructions ahead and perform control.
• If the radar or vehicle control module (V/C-module) is replaced, always perform the aiming procedure. Auto aiming adjustment is only in the up/down directions. Left/right direction aiming is required.
• When air bags are replaced, it is necessary to perform the yaw rate 0-point command for the vehicle control module (V/C-module). (For details, refer to the workshop manual)
• Operates at 30 to 200 km/h (Europe), 30 to 100 km/h (Japan), 20 mph (30 km/h) to 90 mph (145 km/h.) (North America and other)
Common Inquiry
• In the following cases, determination of a vehicle ahead may be delayed or the vehicle ahead may be approached too closely.
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1. Weather conditions
Heavy rain, snow, blizzard, heavy fog
2. Road conditions
Road conditions (slope), curves
3. Detection target
Low vehicles, small vehicles, round vehicles, vehicles with material that reflects radio waves poorly (canvas, hard plastic liftgate, empty trailer), vehicle ahead throws water/snow/sand from tires into the air, vehicles in radar blind spot.
4. Detecting vehicle conditions
Load condition, frost on protective cover (Radome), looseness in sensor installation area, scratching/soiling on protective cover (Radome)
5. Other
If a vehicle cuts into driving lane suddenly directly after turning on turn signal
Other
• Sensor type: Radar sensor
