Genuine OEM Volkswagen Electronic Control Unit, part number 09G927750GG. This unit is responsible for managing the functions of the 6-speed automatic transmission, ensuring smooth gear changes and optimal performance. It is typically located within the transmission assembly. The unit weighs approximately 0.3 kg and has dimensions of 0.156m x 0.15m x 0.039m. Genuine OEM electronic control units are critical for ensuring the correct firmware, calibration, and sensor integration necessary for reliable transmission operation.