is controlled by an electronic unit with control signals the electronic unit uses an operating mode and a learning mode with which a reversal position of a wiper arm and or a driven shaft can be stored in memory in the learning mode and called up as often as desired in the operating mode in this way a wiper motor is made that can be adapted to different operating cases with different wiped areas in a simple and cost effective manner without mechanical changes needing to be performed application_number US 26969799 A description a windshield wiper device 1 includes a wiper motor 2 that can be reversed in its rotational direction and has a driven shaft 3 and a wiper arm 4 that is attached to it a windshield wiper cleans a defined wiped area 5 of a vehicle windshield 6 removing dirt and contaminants the wiped area is limited by a park position p and an outer reversal position u the wiper motor 2 is equipped with a unit 7 for detecting the position of the driven shaft 3 and in addition or alternatively for detecting the position of the wiper arm 4 this unit 7 gives operating signals 8 to an electronic unit 9 in order to control the motor 2 two structural shapes of the position detection unit 7 can be distinguished for a relative position sensing a magnetic transmitting component is arranged on the driven shaft 3 and another magnetic transmitting component is arranged.