The initial problems with my sunroof (on my 98 E320) was that when I opened the sunroof, the roof would open 4" then begin to make noises. I noticed that sunroof would begin to pull more on one side. The sunroof would close without any noises/problems.
I removed the headliner and dropped the sunroof mechanism. I discovered that the sunroof cable was bending on both sides when the sunroof started to make noises. The sunroof cable consists of a coiled wire (1/4" dia.) with a felt-like material in the center. The cable design seem to be a bit flimsy for its function (especially for a 50K$ car).
I tried to "adjust" the cables by removing the motor (located above the front dome light). With the motor removed I pulled the cables from both sides to take up any slack, then reassembled the motor (note that the sunroof was in the full open position).
This seemed to help a little but I noticed that the cables started to bend again. I believe that the only fix is to replace the sunroof cables.
Anyone have any experiences with a similar W210 sunroof problem?
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Ray
1998 Mercedes E320, 200K Miles
2001 Acura 3.2TL, 178K Miles
1992 Chevy Astro, 205K Miles
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