Re: 2010 Q7 Smart tab install
My dash is a little different but the light weight plastic does butt up to fiberglass (there is a horizontal line instead of just a vertical line on side like yours) but thats where it seems to make some racket.
If you press on it you can just tell...its a rattle point. Plan to rubberize back of the plastic...might have to put some sorta gasket in there too...