Genuine OEM Volkswagen Electronic Control Unit, part number 3Q0035840X. This control unit manages the vehicle's on-screen electronics and integrates Bluetooth radio functionality. It is typically located within the dashboard assembly. The unit has dimensions of approximately 0.2m x 0.19m x 0.06m and weighs 2.183 kg. Genuine OEM electronic control units are essential for ensuring correct firmware, precise sensor calibration, and seamless integration with the vehicle's complex electrical systems, guaranteeing optimal performance and longevity.