mbenz280ce, as far as I know adjusting the window is the trial-and-error method. It's important to understand how small adjustments affect the fit, and only make small adjustments at a time so as not to break the window, or cause the motor to fail. I have a 1991 300CE and the front windows have never required adjustment in the 16 years I have owned this vehicle.

The 1992 300CE that we bought in 1999 with an extended warranty had front window alignment issues. The MB dealer adjusted the windows at no charge due to the warranty, but I recall the tech remarking how difficult the adjustment was because there are no adjustment screws per se. It's a matter of loosening the regulator bolts, shifting the window slightly, retightening the bolts and operating the window to check the fit ... repeated trial-and-error. Besides these cars are few-and-far-between so techs seldom have the opportunity to become proficient making the window adjustments.

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Fred Hoelzle