Genuine OEM Volkswagen Electronic Control Unit, part number 3Q0035824AX. This control unit is integral to the vehicle's on-screen electronics system, providing functionality for the Bluetooth radio. It is located within the dashboard assembly. The unit weighs approximately 2.078 kg and has dimensions of 0.19m x 0.195m x 0.06m. Genuine OEM electronic control units are crucial for ensuring correct firmware, precise calibration, and seamless integration with other vehicle systems.