The invention relates to a motor vehicle component assembly including an air door assembly having an air door frame, on which at least one air door is movably arranged for adjusting the area through which air can flow in an air flow opening; a heat source that can include a coolant heat exchanger and/or an internal combustion engine; a blower which in the rated operating mode generates an operating air flow from the air door assembly toward the heat source; a sensor device that detects at least one operating variable and/or one state variable of the motor vehicle component assembly, and/or onestate variable of the area surrounding the motor vehicle component assembly, and on the basis of this detection, outputs at least one detection variable; and a control device, which is configured tocontrol the operation of the blower, the control device being configured to operate the blower, based on the at least one detected variable, in a deicing mode that is different from the rated operating mode, in which the blower generates a deicing air flow from the heat source toward the air door assembly.