Genuine OEM Volkswagen Sliding Door Control Unit, part number 8V0862153B. This unit controls the operation of the electric sliding door, managing its opening, closing, and locking functions. It is located at position 7 in the diagram. The part measures 0.115m x 0.075m x 0.065m and weighs 0.107kg. Genuine OEM control units are programmed with the correct firmware for reliable and safe operation of vehicle systems.