The invention relates to an electronic control device comprising an arithmetic unit adapted to control an adjusting device, especially a window lift of a motor vehicle. The arithmetic unit stops an adjusting movement of the window lift drive or triggers a program for stopping the adjusting movement of the window lift drive if a signal correlating with the torque of the window lift drive exceeds a response level. In the adjustment range of a starting movement from a standstill of the window lift drive the response level is a defined function depending on the adjustment travel and/or the adjustment time and comprising at least one parameter determining the course of said function, the value of said parameter being modified depending on the starting movement of the window lift drive.