Genuine OEM Mercedes-Benz Parktronic System Control Unit, part number A0009000618. This control unit is the central processing module for the vehicle's parking assistance system, interpreting data from sensors to provide alerts and assistance during parking. It is typically located within the dashboard or under the passenger seat area. The unit has dimensions of 0.26m length, 0.05m width, and 0.17m height, weighing 0.472 kg. Genuine OEM control units are essential for ensuring the correct firmware and sensor calibration, which is critical for the accurate and reliable functioning of advanced driver-assistance systems like Parktronic.