The breakdown of glass lifts can be divided into two types: mechanical and electronic. Mechanical breakage of the engine or the rails. Electronic-errors causing the lazic work of the window-lifts.
Eliminating errors helps to disconnect the battery and reprogramming the window-lifts. To do this, it is necessary (after the battery is connected) to lift and drop each glass completely, holding the button for several seconds after the glass has reached its last position.
