Windshield Wiper/washer Motor problems of the 2002 Mini Cooper

Windshield wipers failed while driving in rain. The dealer diagnosed problem as wiper motor failure. I noticed that the wiper motor was exposed directly to the weather and moisture because it is located directly underneath the cowl intake and I felt that was the cause of the failure. It's exposed to rain, snow, and winter road salt spray - even when the vehicle is not being driven. I obtained the replacement part and noticed that it had a plastic shield installed to protect the motor indicating the manufacturer does know about the problem and has implemented corrective action. When I contacted BMW, they claimed to be unaware of the problem. BMW insists on charging for the repair ($465. 00) and has not yet recognized the fact that there is a safety defect with the vehicle. There is also a high likelihood that there are other vehicles that could experience the same failure resulting in loss of life.