WEll not sure exactly what date this all happened. All we know is we have in the past be able to drive to the Fenton, MI office(Webasto) and either troubleshoot our trucks problems, and or purchased the required part right from them. As of today September 13, 2010 this is no longer allowed as we were told that Detroit Diesel now owns Webasto and the closest place to order parts is Williams Carrier, another Michigan institution goes down the tube. I guess they were offered a too good to pass up offer, and in the process flushed customer service down the tube. On behalf of Webasto however they did have the technician call and troubleshoot the problem. The Williams Carrier solution was to purchase a 600.00$ part for a 75.00 error. through the last remannant of decency we were able to work through the problem.