System limits

Speed range

Best results are achieved when using the system on well-developed roads and highways.

The desired speed can be selected between 20 mph/30 km/h to 110 mph/180 km/h.

The system can also be activated when stationary.

Comply with the legal speed limit in every situation when using the system.

Detection range

Detection range
Detection range

The detection capacity of the system and the automatic braking capacity are limited.

Two-wheeled vehicles driving ahead of you for instance might not be detected.

Limited detection capacity Limited detection capacity

Because of the limits to the detection capacity, you should be alert at all times so that you can intervene actively, if necessary; otherwise, there is the danger of an accident occurring.


The system does not decelerate when a stationary obstacle is located in the same lane, e.g., a vehicle at a red traffic light or at the end of traffic congestion.

The system also does not respond to:

▷ Pedestrians or similarly slow road users.

▷ Red traffic lights.

▷ Stationary objects.

▷ Cross traffic.

▷ Approaching traffic.

No warnings No warnings

A warning may not be issued when approaching a stationary or very slow-moving obstacle.

You must react yourself; otherwise, there is the danger of an accident occurring.

Swerving vehicles

Swerving vehicles
Swerving vehicles

A vehicle driving in front of you is not detected until it is completely within the same lane as your vehicle.

Swerving vehicles Swerving vehicles

If a vehicle driving ahead of you suddenly swerves into your lane, the system may not be able to automatically restore the selected distance.

This also applies to major speed differences to vehicles driving ahead of you, e.g., when rapidly approaching a truck. When a vehicle driving ahead of you is reliably detected, the system requests that the driver intervene by braking and carrying out evasive maneuvers, if necessary. You must react yourself; otherwise, there is the danger of an accident occurring.

Unexpected lane change

Unexpected lane change
Unexpected lane change

If a vehicle ahead of you unexpectedly moves into another lane from behind a stopped vehicle, you yourself must react, as the system does not react to stopped vehicles.



If the desired speed is too high for a curve, the speed is reduced slightly in the curve, although curves cannot be anticipated in advance. Therefore, drive into a curve at an appropriate speed.

In tight curves, situations may result due to the restricted detection range of the system in which a vehicle driving ahead of you may not be detected at all, or not until after a considerable delay.

When approaching a curve, the system may react

When approaching a curve, the system may react briefly to the vehicles in the next lane due to the bend of the curve. Any deceleration of the vehicle by the system can be compensated for by briefly accelerating. After the accelerator pedal is released, the system becomes active again and independently controls the speed.

Driving away

In some situations, the vehicle cannot drive away automatically, e.g., on steep inclines or behind bumps in the road.

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