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Registered
Join Date: Dec 2016
Location: Bethesda, MD USA
Posts: 9
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Were you backing up or down an slope, or just flat?
If you have an OBD2 adapter you could check to see if it's thrown any diag codes. Not sure how many (if any) would show with a generic adapter, but ones with Porsche-specific features would likely show any detected error codes.
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