4th Transfer Case
#16
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I'm sorry to hear about your luck.
I'm guessing these transfer case issues are temp and running temp related.
Mine Tc was warranty replaced. 2 weeks later a 9hr hwy road trip had my cayenne almost undrivable after exiting the highway. Stopped for a few hours to shop, eat and the Cayenne was driving like new again.
All fall and winter no issues. We'll see if summer brings on the symptoms again.
I believe more air flow and or external cooling will be the long term answer.
I'm guessing these transfer case issues are temp and running temp related.
Mine Tc was warranty replaced. 2 weeks later a 9hr hwy road trip had my cayenne almost undrivable after exiting the highway. Stopped for a few hours to shop, eat and the Cayenne was driving like new again.
All fall and winter no issues. We'll see if summer brings on the symptoms again.
I believe more air flow and or external cooling will be the long term answer.
For what its worth, I have a 2011 CS. TC replaced at 55k (I purchased Oct 2020, TC done in November 2020 under warranty). I'm at 100k now and the TC still feels great. Car has lived in Scottsdale and Denver across the past 3 years. So temps have been all over but both places are relatively dry.]
I drive pretty aggressively and have been towing a lot recently (building a deck, hauled a few tons of rock last week). BUT, I change my TC fluid every 5k miles when I change my oil. I've actually put ball valves on the TC to make draining and filling a 5 minute job.
Last edited by AnAlbumCover; 04-12-2023 at 12:24 PM.
#17
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All of the above. Plenty of long distance driving on highways, and plenty of in town driving too. Even occasionally tow a 23 ft 6500 lb boat - never any issues. I’ve put on 115k miles in 6 1/2 years and this is my daily driver in all weather and wherever I need to go. Never any off-roading though. Overall this has been one of the most reliable cars I’ve owned.
I wasn’t having any issues at 100k when I changed the fluid, but I had all fluids changed at the same time. Every 5k miles? Total overkill and 32x more frequent than Porsche recommends 🤪
I wasn’t having any issues at 100k when I changed the fluid, but I had all fluids changed at the same time. Every 5k miles? Total overkill and 32x more frequent than Porsche recommends 🤪
Last edited by leftlane; 04-12-2023 at 11:11 PM.
#18
Rennlist Member
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I'm sorry to hear about your luck.
I'm guessing these transfer case issues are temp and running temp related.
Mine Tc was warranty replaced. 2 weeks later a 9hr hwy road trip had my cayenne almost undrivable after exiting the highway. Stopped for a few hours to shop, eat and the Cayenne was driving like new again.
All fall and winter no issues. We'll see if summer brings on the symptoms again.
I believe more air flow and or external cooling will be the long term answer.
I'm guessing these transfer case issues are temp and running temp related.
Mine Tc was warranty replaced. 2 weeks later a 9hr hwy road trip had my cayenne almost undrivable after exiting the highway. Stopped for a few hours to shop, eat and the Cayenne was driving like new again.
All fall and winter no issues. We'll see if summer brings on the symptoms again.
I believe more air flow and or external cooling will be the long term answer.
#19
#20
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NOTE: NPT fittings and the factory TC plugs are TAPERED THREADS, DO NOT overtighten, you WILL crack the transfer case housing. The original plugs and/or anything else you decide to thread into the holes WILL NOT BOTTOM OUT/SIT FLUSH with the TC, DO NOT continue to tighten. I know the yelling here is a little obnoxious but I'm hoping I save at least 1 person from cracking the TC.
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Last edited by AnAlbumCover; 04-20-2023 at 11:26 AM. Reason: tightening disclaimer.
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#21
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My 2016 Cayenne GTS is getting it's 4th transfer case today.
1. New
2. 14,xxx miles
3. 36,xxx miles
My ownership begins.
4. 58,xxx miles
Have I set the record?
This SUV was babied and well-maintained by myself and the previous owner. It's in fantastic shape otherwise. I love my Porsches, but this is full-on ridiculous.
This will be my last transfer case, however. My CPO ends soon. I hope this one lasts. These new ones have an improved clutch coating or something, right?
1. New
2. 14,xxx miles
3. 36,xxx miles
My ownership begins.
4. 58,xxx miles
Have I set the record?
This SUV was babied and well-maintained by myself and the previous owner. It's in fantastic shape otherwise. I love my Porsches, but this is full-on ridiculous.
This will be my last transfer case, however. My CPO ends soon. I hope this one lasts. These new ones have an improved clutch coating or something, right?
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Robocop305 (04-28-2023)
#22
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Yah. And probably the worst part is the number of attempts Porsche has taken to fix this. First it was water, now it's a coating. Coatings wear off, no? I'd love to see some documentation specifically calling out exactly what the problem is. After this amount of time, Porsche should know 100% what is causing these failures. I'm not convinced a coating is a long-lastong fix. I hope I'm wrong.
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wyowolf (04-22-2023)
#23
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This TC issue will be probably be the next the next big Porsche class action thing. These TC issues seem ridiculous. One would think that the engineers would have figured out the cause of failure and fixed the issue. Maybe the data hasn't told them the root cause yet.
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wyowolf (04-22-2023)
#24
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Originally Posted by wyowolf;[url=tel:18759262
18759262[/url]]I don't know how anyone can defend this... this is Ram territory bad... hell maybe Yugo.
On a separate note, has anyone actually had the transfer case fail? I’ve seen a couple of instances where someone found clutch pieces which is no bueno, but it seems like 99% of cases are replaced for the symptoms. My transfer case felt absolutely awful when I took it in last Friday. Ended up just changing the fluid for $240, and it drives like new. We’ll see how long that lasts I suppose, but it does beg the question of if it’s just something that’s life can be extended indefinitely by semi-frequent fluid changes.
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wyowolf (04-28-2023)
#25
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For what it’s worth, it really just seems like Porsche has decided to keep replacing them instead of digging into the issue since they’re not going to have to deal with it much longer. My 2015 is already not covered anymore.
On a separate note, has anyone actually had the transfer case fail? I’ve seen a couple of instances where someone found clutch pieces which is no bueno, but it seems like 99% of cases are replaced for the symptoms. My transfer case felt absolutely awful when I took it in last Friday. Ended up just changing the fluid for $240, and it drives like new. We’ll see how long that lasts I suppose, but it does beg the question of if it’s just something that’s life can be extended indefinitely by semi-frequent fluid changes.
On a separate note, has anyone actually had the transfer case fail? I’ve seen a couple of instances where someone found clutch pieces which is no bueno, but it seems like 99% of cases are replaced for the symptoms. My transfer case felt absolutely awful when I took it in last Friday. Ended up just changing the fluid for $240, and it drives like new. We’ll see how long that lasts I suppose, but it does beg the question of if it’s just something that’s life can be extended indefinitely by semi-frequent fluid changes.
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TXCOMT (05-01-2023)
#26
Rennlist Member
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For what it’s worth, it really just seems like Porsche has decided to keep replacing them instead of digging into the issue since they’re not going to have to deal with it much longer. My 2015 is already not covered anymore.
On a separate note, has anyone actually had the transfer case fail? I’ve seen a couple of instances where someone found clutch pieces which is no bueno, but it seems like 99% of cases are replaced for the symptoms. My transfer case felt absolutely awful when I took it in last Friday. Ended up just changing the fluid for $240, and it drives like new. We’ll see how long that lasts I suppose, but it does beg the question of if it’s just something that’s life can be extended indefinitely by semi-frequent fluid changes.
On a separate note, has anyone actually had the transfer case fail? I’ve seen a couple of instances where someone found clutch pieces which is no bueno, but it seems like 99% of cases are replaced for the symptoms. My transfer case felt absolutely awful when I took it in last Friday. Ended up just changing the fluid for $240, and it drives like new. We’ll see how long that lasts I suppose, but it does beg the question of if it’s just something that’s life can be extended indefinitely by semi-frequent fluid changes.