Genuine OEM Audi Electronic Control Unit, part number 09G927158GP. This unit is responsible for managing the transmission's operations, including gear selection and clutch engagement. It is typically located within the transmission housing or nearby. The unit has dimensions of 0.155m x 0.125m x 0.035m and weighs 0.341 kg. Genuine OEM electronic control units are crucial for ensuring the correct firmware and sensor calibration, which directly impacts the vehicle's drivability and transmission longevity.