The power window switch may fail and the windows will not raise. The main switch at the front center console is commonly at fault. A failed switch will require replacement.Google+
Car Problem Reports
Mercedes-Benz ML320 Power Window Main Switch May Fail
Mercedes-Benz ML320 Problem
Model Year Affected: 1998
drivers side window doesnt go up. there is sound when i try to raise it but nothing happens.
after trying over and over for over ten min. i got it up some, then ten min. more of trying constantly, by pulling switch up to raise window, it finally went up all the way. now i leave it up, and i dont use the window.
i had a window switch replaced i think a few years back. i had the same exact problem.
now its faulty again
Visitor, 1998 Mercedes-Benz ML320
I experienced the same problem. But I love my car