On many transmissions, a gear change is made by means of a hydraulic controller activated by a transmission control unit. Intelligent control software adjusts the switching behavior of the automatic transmission to the actual driving situation. By controlling the electrohydraulic or electromechanic transmission actuators, the transmission control unit makes comfortable and dynamic driving performance possible. It also performs a diagnosis of the automatic transmission and its components.

drive safely

thanks to state-of-the-art computer architecture (multicore in lock-step mode)

drive comfortably

thanks to optimum automatic transmission control in every driving situation

drive economically

due to optimum transmission ratio selection