Hi all. Thanks for all the information in this forum. My 2015 Macan S, 25k and 6 months out of warranty (2nd owner) will now need a transfer case. Also, another issues dealer (Napleton Porsche of Westmont) found out front differential fluid leak, they said I will need a front new cover. May be the seal is bad? So reseal will solve the problem? My dealer went out to talk to PCNA, I personally also called PCNA over the hotline to complaint about the transfer case issues. Dealer called me yesterday afternoon and ask me a few questions like 1) where did you buy the car; 2) who did the maintenance; 3) do you have other Porsche car? Mine own opinion is PCNA should have recalled the transfer case or at least quietly extend the transfer case warranty to 7 years or so. Given that they now sold 1/3 of Macan (86K) and 1/2 SUVs for 2018 (total 256k). This is a bad press for them.
In the end, I will foot 20% for the bill. Which is about $700 for the transfer case replacement and $500 for the new differential cover. Of course it is not 100%, but given that I don't even do my routine service (only warranty and recall issues) at the dealers. This would be a surprise outcome for me. I did research online and call a reputable 3rd party Eurocar repair shop for estimate. Latest Transfer case (95B341010AX) is about $1300 depends where you bought it and after you returned the core unit. Differential cover is not sure, coz 3rd party didn't have the car just over the phone, she said is about $600 for the labor to remove the cover. So, who knows? Just a note, the X means it is a renewed unit.
Also, discussion also mentioned from PCNA that if in the future they did recall the transfer call, I will get a letter and I can reimburse some or all of the money that I paid. So keep the receipts.
I hope my informations help others in this forum. And thanks you all for provided informations.