The Mercedes-Benz S W220 Gearbox Control Unit A0305452932 3.22 2017 31939266 is a transmission control module designed for manual transmission in a sedan body type. Specifically made for the 2017 Mercedes-Benz S (W220) model, this control unit is essential for controlling the gearbox operations. With a left-hand drive steering type, this genuine manufacturer part ensures smooth and efficient gear shifting, making it a crucial component for maintaining the overall performance of the vehicle.