7
Radar sensor detection zone
The detection zone consists of areas to the rear and to both sides of the vehicle. The rear detection area
extends from the rear edge of the vehicle to approx. 50 metres rearwards. This corresponds to the grey area
between lines A and B. The side area extends from the rear edge of the vehicle to approximately the line of the
B-pillar, which corresponds to the grey area between lines B and C. The width of the grey areas measures
approximately 3.60 metres.
The illustration of the sensor detection zone shows a straight stretch of road. On curved road sections,
the Audi side assist operates above a minimum curve radius of approx. 170 metres. If the radius of the curve
drops below the 170 m limit, the Audi side assist is deactivated because the emitted radar beams can no
longer monitor the full 50 metres of the rear detection zone. This deactivation threshold is provided with a
hysteresis of 30 metres. This means that if the Audi side assist has been deactivated due to the radius of the
curve, it is reactivated when the radius of a curve exceeds 200 m.
The course of the road is calculated by the side assist control unit by means of the yaw rate and the individual
wheel speeds from the ABS control unit J104. The curved detection zone during cornering is represented as a
straight road section by the software. This ensures that the basis of the assessment for the warning algorithm
used to determine whether or not the driver needs to be alerted is the same for straight roads and bends.
375_005
Sensor detection zone
50 m
50 m
3.6 m
3.6 m
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