Genuine OEM Mercedes-Benz Roof Control Unit, part number A00090006249051. This control unit is responsible for managing various functions related to the vehicle's roof, such as sunroof operation and interior lighting. It is typically located in the headliner assembly. The unit features precise calibration and firmware specific to Mercedes-Benz vehicles. Genuine OEM modules are essential for correct operation, ensuring proper communication with other vehicle systems and preventing potential electrical faults.