Genuine OEM Mercedes-Benz Parking System Control Unit, part number A0009001951. This control unit is a key component of the vehicle's parking assistance system, processing data from various sensors to provide alerts and guidance during parking maneuvers. Genuine OEM ensures correct calibration and seamless integration with other vehicle systems for accurate parking aid operation. This unit is located in the rear of the vehicle. It has dimensions of 0.26m length, 0.07m width, and 0.2m height, weighing 0.639kg.