2014 CS 46k replaced battery 2 years ago without knowing about programing, drove some and buttons started acting weird, took to Porsche, they programed battery and off I went.
Buttons started acting weird again, sport wouldn't work then would sometimes then I'll get a "Sport Mode Not Available." It has even turned on by itself sometimes, all buttons are affected auto off always stayed lit.
Its not a daily, and it'll work perfectly sometimes for 6 months or more, now no buttons are working, talked to Porsche parts and they said they rarely if ever have a request for one. Before I fork over $375.00 with a "no return under
any circumstances" I'd like to hear what I might try, Thanks

 

I’d be checking for moisture under the seats in case any of the control units have got wet.