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I have a 2012 Cayenne S which has done about 56k miles. When I turn the steering and press the accelerator, the rear left tyre judders. My brother observed that the wheel looks like it was 'locked'.
My mechanic disconnected the transfer case motor, and after he did that, everything was back to normal (there was a 4x4 error as the transfer case motor was disconnected). According to him, since the transfer case motor is disconnected, the transfer case was not being used and he came to the conclusion that there is a problem with the transfer case. Another gearbox specialist I consulted with said that the problem is due to the transfer case motor. According to him, even though the motor is disconnected, the transfer case is still being used. He also gave me some other reasons which I forgot. I am not sure who to believe.
BTW I have also done the following:-
1)Change the transfer case fluid
2)Change the rear axle fluid
3)Refurbish the rear left driveshaft
The problem became worse after doing the last 2! both the transfer case & axle fluid were dirty but nothing serious.
Hoping to identify a root cause of multiple transfer case failures. 2012 Cayenne S purchased CPO with 43K. Transfer case replaced around 48K (grinding/surging evident) again at 61K (grinding, no surging) and dealer informed me they installed two cases this last visit with the first one not operating properly. Returning to dealer today, 62K, grinding/clunking particularly evident on left hand turns but not exclusive and while frequent it is not a constant occurrence.
Hard to imagine randomly getting multiple "bad" transfer cases and suspect some other gremlin is the root cause. Has anyone experienced a similar issue or have a suggested direction (differential?) I can pass on to the Porsche techs at Annapolis Porsche? Rolling out of warranty in two weeks so a bit concerning.
Can anyone help me identify a fluid leak? While changing oil on my '04 Cayenne S, I noticed a small leak coming from the drain (weep) hole of what I would normally call the bell housing which I assume is part of the transmission housing. There are 3 small holes in a row which appear to be drain holes. The fluid has the consistency of 90 weight oil. It is amber in color. It's not motor oil or transmission fluid (which I think is colored Red). Thanks!