A plastic pan and a plastic drain plug assembly is disclosed. The liquid distribution unit includes a sheet, the sheet including a plurality of openings defined through material which is otherwise liquid impermeable, and a plurality of introductory tubes extending toward the absorbent member, and each one of the introductory tubes includes one first end and one second end. The per call based message is free of per session based information that has been removed. The tapered surfaces of the hub and the casing together define a tapered interface and a keyway. A switch is put into the second space through the aperture for connection with the transmission.