One or more door windows may stop working due to a failed window regulator. Replacement of the failed regulator will be necessary to correct this concern.Google+
Car Problem Reports
Mercedes-Benz 190E Window Regulator Failure is Common
Mercedes-Benz 190E Problem
Average Mileage: 175,500 mi (125,000 mi - 257,000 mi)
Visitor, 1993 Mercedes-Benz 190E, 125,000 mi
drivers window still works but others quit then started back and now quit again
Visitor, 1990 Mercedes-Benz 190E, 257,000 mi
Both back windows are out. I'm not sure how long they have been like this as I acquired the car that way.
Visitor, 1991 Mercedes-Benz 190E, 160,000 mi
Both rear windows are broken the one on the right just falls down with no power. the one on the lekf stays up with no power.