Originally Posted by kvec

Whoops, my bad. Was referring to this one:



My 2011 CTT has developed a slip shifting into 3rd. Feels like torque converter. Seems to be particularly noticeable in cold weather. I've not noticed it before and we had a particularly wet spring, so I'm wondering if it might be a symptom of the oil having been contaminated, since it sounds like one of the transfer case symptoms.

Have you noticed the slip change at all with TC fluid changes?
Thanks,
Ken

Originally Posted by CayenneWahoo

It is very good that you mentioned the TC issue to your dealer, I would advise others in similar situation to do the same, with hesitation and definitely prior to expiration of the warranty. I did just this in Memphis. For all, please be sure that your dealer records this issue under your account in the Porsche CRM. This is important b/c it records an identified issue while you are still under warranty. I have been told by technicians that as long as the issue is identified and recorded under warranty, in the vast majority of instances, Porsche will resolve the issue later, even if the car is brought in post-expiration for that specific issue. Other, non-recorded issues, you are out of luck.

I am responding b/c I have had the same issue with my 2013 CS, and I sympathize with everyone on this thread -- with my CS slipping regularly in third gear, although I would describe my experience more as a delay or failure in application of power -- particularly when climbing a moderate hill. I noticed this around town at about ~35 MPH...~in 3rd gear. Finally, after discussing the issue will the dealership and local technicians, all concluded that an entire replacement was necessary. Happily, after an additional 70K miles (this is a daily and long distance driver for me), the car is performing beautifully, and with no issues. For me, driving in the city and having to merge onto a high-speed interstate daily was enough of a concern that I had to nip this issue quickly, and was consistent with the dealership that the TC was producing an unsafe driving condition. The guys in Memphis are quite attentive and pleasant, and I would recommend them to anyone without hesitation, as I would the guys at Perfection Plus in Little Rock, AR (incase we have any folks reviewing this in my neck of the world). Both genuinely are passionate about the product, and want their customers in cars they love, and safe, and for the long-term. A small plug for anyone in LR -- PP has floored me again and again with their service and passion for Porsche, I recommend them more than any other provider I have ever experience. Yes, they are *that* good.

Porsche Memphis was very understanding, ordered the parts and then over 2 days replaced everything. This has to be executed by a official P. technicians to be covered by warranty.

I have read about many work arounds on this thread but my understanding is that informally this is a known issue and dealerships are not surprised that a high percentage of owners have had to have a replacement. This should not be a surprise to any dealership or tech who has worked on a number of CS. Why this is not a mandatory recall I do not know, as this opens a pandora's box of liability for the company.

My honest impression after reading posts over the years is that this will not resolve itself with small patches, nor on its own, nor by changing liquids--these will only delay the inevitable and potentially put you at risk. I, too, had mentioned liquid updates to more than one tech, referencing this thread, and they said "maybe" but looked at me as if I were half crazy and responded with what I shared above: that the T-case needed to be replaced, this has been seen and written about extensively, and the only long term solution is replacement in all situations.

The sad news in this situation, is that additional, future failures with replacement parts have been identified as well. In those cases, nearly uniformly, Porsche owners are out of warranty and then are presented with a not insignificant replacement bill (3 years ago mine would have been in the mid $5k's). Indeed, I may be facing this soon. But, I love the car and baby her. So, at 110K I will make the replacement again, only this time at my expense.

I wish everyone quick resolution to this issue and hope sharing my experience has been helpful.

Originally Posted by Quadcammer

If its the typical torque converter lock up "fake shift", the TC did not change that at all. Even a TC rebuild did not change that behavior.



The TC can be rebuilt cheaply and relatively easily if you have some skills and a few tools. about $600 vs $4k+

Its not a very complex assembly, so there is really no reason to throw the baby out with the bathwater if all you need to do is replace a potentially stretched chain or worn clutch disks.

Originally Posted by edde

This is absolutely correct. For me fluid and a little friction modifier is working wonders to normalize something that won't ever be "fixed" with a new case. I'm sitting on the parts in case I need to or feel like it. I also got a local A+ tranny shop to quote me roughly $1000 for the R&R using my parts.

Originally Posted by Quadcammer

thats pretty steep for an experienced entity. Having done it once, I think i could get it done from running car to running car in about 5 hours. I wouldn't think they would charge $200 an hour

Originally Posted by stuttgart1

Does anyone know the transfer case issue affect manual transmission V6 Cayenne?

Originally Posted by dbv1

I haven't had any transfer case issues with my manual but it's got 50K. I haven't heard of anyone having transfer case problems with manuals either but as per the Panorama magazine, manuals are 1.8% of the 958 Cayennes so that might explain it. I think it's the exact same transfer case.

Originally Posted by deilenberger

... It's probably cut their warranty expenses in half for transfer cases.