Method and apparatus for detecting the condition of a motor vehicle arranged at a distance sensor

2007 
The invention relates to a method and an apparatus (2) for detecting the condition of a arranged on a motor-vehicle distance sensor (1) having a processor (10) and a memory (11) for storing a first value representing a number of implausible target object loss and of second values ​​that represent a time of a target object implausible loss, and a speed controller (13), by means of which the speed of the motor vehicle (31) is adjustable. Once a lens heating is activated, the number of implausible target losses are counted. Is a definable value achieved within a predetermined time, a status bit Blindness is activated. If no new implausible target loss registered within a further predetermined time, Blindness status bit is returned.
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