I have a 95 GLE and water leaks out from the sunroof control panel. I was messing around with it today and it seems that the bottom right corner is loose and that's how you take it off. Is this true?

 

First, pop off the clear lense to ensure there isn't a mounting screw hidden in there (doubtful). If not, gently pry the whole assembly down on the dome light side.

Below is the only image I could find on Google.