Collision mitigation support rear is an autonomous emergency function that automatically intervenes and reduces the risk of whiplash injuries and secondary accidents in case of an imminent rear collision. The function is active in the 0–150 km/h speed range.
Prior to an imminent collision, the collision mitigation support rear function activates the rear hazard warning lights at a higher frequency than normal to warn the driver of the vehicle approaching from behind. Collision mitigation support rear may also activate the following warnings and functions:
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A visual warning in the driver display |
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If the car is stationary, the brakes are applied to reduce the vehicle's forward movement if a collision occurs |
To turn off collision mitigation support rear:
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Navigate to  .
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Press Rear collision mitigation.
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Note: The function remains turned on/off for future driving cycles.
Limitations of the collision mitigation support rear function
Several factors may affect and reduce the functionality of the collision mitigation support rear function. These factors include but are not limited to the following:
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A vehicle is approaching at a much higher speed from behind, and the speed is beyond the sensor's detection range |
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A slow approaching vehicle from behind |
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A vehicle approaching from behind that changes lanes at a late stage |
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The rear bumper is covered with dust, dirt, ice, snow, or debris, or covered in any other way |
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Driving in heavy fog, rain, or snowfall |
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Luggage sticks out from the luggage compartment |
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Limitations related to the driver assistance sensors, see Limitations of the driver assistance system sensors. |