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PCM loses navigation & stereo settings

12K views 25 replies 8 participants last post by  dougpaw57 
When did the problem start? Had similar issues with a different version of the PCM (in a 2017 Macan S), which seemed to be the result of a software update that was unsuccessful. The system would always revert to defaults. After a few trips to the dealer, they reset all the software and re-applied the latest updates and now everything works as expected. No new PCM was needed in this case.
 
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