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 and 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. Twowheeled vehicles driving ahead of you for instance might not be detected.

Because of the limits to the 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.

A warning may not be issued when approaching No warnings
A warning may not be issued when approaching a stationary or very slow-moving obstacle.

Take action yourself, otherwise there is a risk of an accident.◀

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.

If a vehicle driving ahead of you suddenly 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. Take action yourself, otherwise there is a risk of an accident.◀

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, with a heavy trailer or behind bumps in the road.

Driver interventions and your responsibility

Your actions have priority at all times. When you press on the accelerator pedal while driving, automatic braking is not performed and the bars in the distance display go out until you lift your foot from the accelerator pedal. Once you release the accelerator pedal, the desired speed is achieved again on clear roads or the selected distance to the vehicle ahead is maintained.

Anytime the driver presses down on the Making braking possible
Anytime the driver presses down on the accelerator pedal, any braking action by the system is interrupted and the distance indicator goes out until the pedal is fully released. As soon as you fully release the accelerator, the system will again control your cruising speed and distance setting. While driving with the system activated, resting your foot on the acelerator pedal will cause the system not to brake even if necessary.

Be certain that floormats or other objects on the vehicle floor do not interfere with movement of the acccelerator pedal.◀

While active cruise control is capable of Limits of automatic braking
While active cruise control is capable of braking your vehicle automatically when you approach a slower vehicle ahead, it is important to be aware that the ability of the system to apply the brakes is also limited, e.g. when you reduce your desired speed sharply. lt uses only a portion of braking system capacity and does not utilize the full capacity of the vehicle braking system.

Therefore, the system cannot decrease your speed for large differences in speed between your vehicle and the vehicle ahead. Examples:when you approach a vehicle traveling at a much lower speed than your own speed such as approaching a toll booth or when a much slower vehicle cuts in front of you at close range.◀

    See also:

    Operating the programs
    Automatic program change The system automatically switches to COMFORT in the following situations: ▷ Failure of DSC Dynamic Damping Control. ▷ The vehicle has a flat tire. ▷ ...

    Additional functions
    Activating/deactivating the additional functions Activate the functions before pairing to be able to use them in the vehicle. Information on suitable mobile phones that support this function. ...

    Fuel cap
    Opening 1. Briefly press the rear edge of the fuel filler flap. 2. Turn the fuel cap counterclockwise. 3. Place the fuel cap in the bracket attached to the fuel filler flap. Closing 1. Fi ...