Distance warning system, function

P30.30-2120-71

Distance warning system activated

1 Vehicle in front

2 Own vehicle

3 Target distance (gray line)

4 Distance warning system indicator

A1e59 DTR warning lamp

The distance warning system is an additional function of DISTRONIC. It warns the driver in the speed range 30 km/hour up to the maximum speed (max. 250 km/hour) of moving or stationary obstacles (vehicles) in his lane.

Activation/deactivation

Independently of the DISTRONIC distance control, the driver can activate or deactivate the distance warning system separately via the left or right switch group on the multifunction steering wheel (S110, S111) in the "Support Systems" menu of the instrument cluster (A1). The distance warning system is dependent here on the function (function requirements) of the radar sensor system.

When distance warning is activated, the display "Distance Warning" is illuminated at the bottom left next to the Electronic Speedometer (A1p8).

The distance warning is triggered whenever a deceleration
>6 m/s² is necessary in order to avoid a collision. The distance warning is given by the DTR warning lamp red triangle and an intermittent acoustic signal.

The multifunction display (A1p13) in the instrument cluster shows the host vehicle, the set target distance and the preceding vehicle with its current proximity.

As an additional function, the driver is alerted if he/she remains within a distance <0.9s from the preceding vehicle for longer than 3s. Here the DTR warning lamp is illuminated until the correct distance is reobtained

This is intended to give the driver the opportunity of avoiding a possible fine (levied in some countries for leaving insufficient distance to the vehicle in front).

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The distance warning system does not perform any control functions by itself, such as braking the vehicle.