Here is the bottom line on Porsche interiors.
All of the plastic parts are a dark-gray, injection-molded ABS plastic that has been painted. Period.
MOST, if not all, cleaning products will soften up the paint because it is crap paint, probably a lacquer, and definitely not a hardened or catalyzed (2k) paint.
Once the paint is soft, it will EASILY scratch-off and give the appearance of flaking, often revealing the gray, injection-molded ABS plastic underneath. Even a mild soapy water will soften the the paint.
If you can, the easiest way to fix these paint problems is to spray the part down with "409" cleaner and scratch off the old paint with your fingernail or something just slightly less hard as the ABS plastic under the paint...and then repaint them with a higher quality paint.
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