I willl be removing the switch and checking its function with a multimeter tomorrow. I agree with your diagnosis as when I push the switch, absolutely nothing happens. If there were a short or something in the window motor, I would expect either a blown fuse or at least a flicker of the lights or something. I will keep you posted of progress. New tires come on Monday and then I will see if the roughness is all tires (and since they are running on the wear bars, I expect the tires are the major source of noise and vibration).
Thanks for the help, Jim
1986 Euro 190E 2.3-16 (291,000 miles),
1998 E300D TurboDiesel, 231,000 miles -purchased with 45,000,
1988 300E 5-speed 252,000 miles,
1983 240D 4-speed, purchased w/136,000, now with 222,000 miles.
2009 ML320CDI Bluetec, 89,000 miles
1971 220D (250,000 miles plus, sold to father-in-law),
1975 240D (245,000 miles - died of body rot),
1991 350SD (176,560 miles, weakest Benz I have owned),
1999 C230 Sport (45,400 miles),
1982 240D (321,000 miles, put to sleep)