The insulation at the sunroof and on the inside of each door window glass can peel off. The loose insulation will then scrape the sunroof or window glass as it is operated. Replacement of the damaged insulation will be necessary to correct this concern.Google+
Car Problem Reports
Mercedes-Benz ML430 Insulation Near Sunroof/Inside of Doors Can Peel Off
Mercedes-Benz ML430 Problem
Average Mileage: 159,500 mi (120,000 mi - 199,000 mi)
Visitor, 1999 Mercedes-Benz ML430, 120,000 mi
Soft glue would coat the outside of the windows after they had been in the down position. Insulation had peeled off the inside of the door.