Abstract: The present invention relates to an operating mechanism (1) for operating a of at least one parking brake of a motor vehicle via braking cables (110, 120). The operating mechanism (1) comprises a first driving unit (10, 30, 90) for driving a first actuating element (40) and a second driving unit (60, 80, 100) for driving a second actuating element (50), wherein the second actuating element (50) engages the first actuating element (40). Due to the relative movement of the first actuating element (40) with respect to the second actuating element (50), at least one braking cable (110, 120) is tightened or released for actuating of the at least one parking brake. Further, the invention comprises a method for actuating of parking brakes with the operating mechanism (1), wherein for tightening or releasing of the at least one braking cable (110, 120) the driving units (10, 30, 90, 60, 80, 100) are driven with the same as well as with opposing rotational direction.