The covering for the center console can bubble and discolor. Replacement of the affected part is most commonly only way to repair this concern.Google+
Car Problem Reports
Mercedes-Benz ML320 Covering For Center Console May Bubble/Discolor
Mercedes-Benz ML320 Problem
Average Mileage: 130,157 mi (20,000 mi - 225,000 mi)
bubbled up, I ignored it. I suppose I should have glued it down with a syringe. sold car at 128,000 with problem
Visitor, 2002 Mercedes-Benz ML320
Bubbling and discolored console as well.
Visitor, 2001 Mercedes-Benz ML320, 95,000 mi
Same problem, bubbling. I have not fixed this yet..
Console cover is bubbled and discolored
Bubble in cover top