general problems of the 2011 Porsche Cayenne

I have a 2011 model Porsche Cayenne s. From the service records, I can tell the car has had two transfer cases already replaced and is in need of another. The first transfer case was replaced in mid-2016 by the dealer at about 46,000 miles. The second transfer case was replaced just over 12,000 miles later, at 58,500 miles, in late 2019. Both replacements were done by the previous owner. This should have been the newest and most updated transfer case with the new control modules and gnc-coated plates, but this does not appear to have solved the problems Porsche is having with the transfer cases. It is now mid-2023, and an independent shop says I need another transfer case in my car at 76,000 miles. It is hard to believe that Porsche considered the upgraded parts (2018+) to be a permanent solution, especially when it only lasted about 17,000 miles.      I will hopefully be able to have my local dealership dissect the transfer case I am replacing so that I can learn more about what actually failed on this updated unit. Transfer cases are a major part of the vehicle and should be expected to last just as long as other major components (ex. Engine, transmission). It is very unsafe when any major part of the drive train fails.   ps. One of the main reasons for purchasing this specific Cayenne was because I believed the transfer case it had installed in 2019 would have solved all of these issues and I would not need to replace it again.  .

2011 Cayenne turbo: vehicle has had recent transfer case servicing. Experiencing a grinding sensation on roundabouts, and turns that almost feels as if the brake is applied. If issue continues to worsen, it could easily cause an accident as a sudden speed reduction on a roundabout, or turn may prompt unaware/inattentive drivers to rear-end me, or worse. Dealership is citing transfer case failure, however, my vehicle is one year removed from the end of the extended warranty campaign and is no longer eligible for a replacement unit.

At time of purchase, 11/5/18 my wife glenda and I took it into Porsche woodland hills who performed campaign aho8 or verified that the work had been done - replacing the faulty fastening screws in camshaft controller. Attached invoice #c56285 dated 11/5/18 says "recall completed - no correction needed" under concern #24 (middle of page).

Tl - the contact owns a 2011 Porsche Cayenne x. The contact stated while driving various speeds he pressed the accelerator pedal and the vehicle started to jerk and no warning indicators illuminated. The vehicle was not taken to a dealer to be diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 80,000. Jc.

Vehicle fails to accelerate from a stop intermittently. Vehicle hesitates/ bogs down for 5 to 8 seconds before accelerating regardless of the throttle position. This intermittent failure has not been identified or replicated by the dealer nor repaired. It is a critical safety issue since it impairs the drivers ability to enter flowing traffic safely. The fault has occurred 9 times already.

When rolling slowly (<15mph) 1-2 second stall/bog after pressing accelerator before car accelerates, creating a major safety issue esp when merging with traffic, changing lanes, etc. Porsche north America denies this is a problem after inspection and says its "performing to specification". Separately, several Porsche dealers have verbally acknolwedged and/or confirmed this issue and call it a "first year" hybrid model problem.