So i got rid of most raddles from the interior of the car (dashboard, command screen, etc) but i finally realized that this one mystery sound was coming from where the Panoramic roof was. I don't know exactly where but it was definitely from there. Was there a previous thread about this or did... Mercedes-Benz Contact; Panorama sliding sunroof with roller sunblinds. Panorama sliding sunroof with roller sunblinds Infoclip :
Most probably this could be a failed Mercedes sunroof track resulting in this problem. To resolve this issue, the track may need to be replaced if the switch and motor work normally. The cost of the Mercedes sunroof track can be approximately $700. It would take 5 hours of labor to replace. if the sunroof keeps failing to reset or reset then fail again you might have a more serious problem that causes it to fail might want it looked at if you have the money. if you don't try listening to the sunroof and see if you here anything wierd like maybe with the motor or tracks.