BMW 5 Series: System limits - Active Cruise Control with 
Stop & Go function, ACC - Driving comfort - Controls - BMW 5 Series Owners ManualsBMW 5 Series: 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

The detection capacity of the system and the

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.

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.◀

Deceleration

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.

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

Swerving vehicles

A vehicle driving in front of you is not detected

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

Unexpected lane change

If a vehicle ahead of you unexpectedly moves

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.

Cornering

If the desired speed is too high for a curve, the

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.

    Displays in the instrument cluster
    Desired speed ▷ The marking lights up in green: the system is active. ▷ The marking lights up in orange: the system has been interrupted. ▷ The marking does not light up: th ...

    Radar sensor
    Position Radar sensor Dirty or covered sensor A dirty or covered sensor may hinder the detection of vehicles. ▷ If necessary, clean the radar sensor. Remove layers of snow and ice care ...

    See also:

    Reference
    This chapter contains technical data, short commands for the voice activation system, and an index that will quickly take you to the information you need. ...

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    Electric exterior mirrors
    Electric exterior mirrorsLeft-hand mirror AOff BRight-hand mirror C Electric exterior mirrors are fitted with aheating element that will defrost or demistthe mirror glass. They will switch onautomati ...