Genuine OEM Audi Mechatronics Unit, part number 0GC325025K009. This mechatronic unit is a complex assembly of electronic and hydraulic components that controls the automatic transmission's functions, including gear selection and clutch actuation. It is located within the transmission housing. This unit features precise calibration and integrated software, ensuring seamless operation and optimal performance. Genuine OEM parts are essential for mechatronic units as they guarantee the correct firmware, sensor calibration, and hydraulic valve control, which are critical for the transmission's longevity and smooth operation.