Transfer case
12-01-2020, 10:41 AM
#1081
Three Wheelin'
Scheduled an inspection for December 8th, which is a few days before my 10 year in-service date of 12/13/10.
Not sure what to expect as no significant symptoms since I've been changing the fluid every other oil change for the last 40K miles and now have 120K on it. I did have jerkiness before the initial fluid change but don't know if that will be enough. The SA said they've pretty much just been swapping all of them out but I somehow doubt that.
Not sure what to expect as no significant symptoms since I've been changing the fluid every other oil change for the last 40K miles and now have 120K on it. I did have jerkiness before the initial fluid change but don't know if that will be enough. The SA said they've pretty much just been swapping all of them out but I somehow doubt that.
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deilenberger (12-01-2020)
12-07-2020, 02:00 PM
#1082
Burning Brakes
Scheduled an inspection for December 8th, which is a few days before my 10 year in-service date of 12/13/10.
Not sure what to expect as no significant symptoms since I've been changing the fluid every other oil change for the last 40K miles and now have 120K on it. I did have jerkiness before the initial fluid change but don't know if that will be enough. The SA said they've pretty much just been swapping all of them out but I somehow doubt that.
Not sure what to expect as no significant symptoms since I've been changing the fluid every other oil change for the last 40K miles and now have 120K on it. I did have jerkiness before the initial fluid change but don't know if that will be enough. The SA said they've pretty much just been swapping all of them out but I somehow doubt that.
I'm not necessarily unhappy as if it's working, it's working. Just hope it doesn't have any issues further down the road.
At least I get a free wash.
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Mrg02D (12-07-2020)
12-08-2020, 11:26 PM
#1083
Rennlist Member
In another thread, a member is talking about getting his transfer case replaced and the dealer is telling him that it wasn't replaced. https://rennlist.com/forums/cayenne-...ejections.html
My response was as follows:
I wonder if there isn't a potentially large legal liability looming over Porsche. Porsche might be trying to dodge a recall ordered by NHTSA or a brewing class action. "See, we are even changing them as fast as we can, even those that do not need it." Kinda sounds stupid but when people get desperate, they get stupid.
Just thinking/guessing out loud. Here it goes:
It appears to be a design flaw. If it were an ATC manufacturing flaw, then we would be swimming in transfer case replacements, loaners, apologies and no BS from dealers or PCNA... all at ATC's expense.
So the story could go like this. In the beginning, Porsche sends the driveline specs to ATC who is probably a preferred supplier. Multiple info exchanges later, probable test run data reduced and analyzed, Porsche (engineering, manufacturing, contracts, pricing, sales, etc) say okay. So now both parties hands are dirty with a yet to be known design flaw.
A few years later in production, warranty returns are coming back to ATC and getting a lot of internal interest by both parties. Lots of technical analysis and engineering judgement being thrown around. "Needs a front shaft seal because moisture is getting in there", "it needs more cooling", "it needs a vent line too", "let's try early lube changes", "should we change the lube specification", etc.
Well those do not solve THE problem but I suspect that those earlier efforts did allow THE bigger root cause to finally come to light, the clutch packs design (recall that the TC was approved by both Porsche and ATC) is fundamentally flawed, not robust enough to last more than a a few years. So we are now seeing GNC coated clutches and maybe even a change to the disk material.
So a lot of legal mud wrestling between ATC and Porsche and we the customers are getting caught in the middle of their short-sightedness.
Nothing short of a NHTSA recall is going to make this situation better.
So with that, has everyone filed their complaint with NHTSA.gov????
My response was as follows:
I wonder if there isn't a potentially large legal liability looming over Porsche. Porsche might be trying to dodge a recall ordered by NHTSA or a brewing class action. "See, we are even changing them as fast as we can, even those that do not need it." Kinda sounds stupid but when people get desperate, they get stupid.
Just thinking/guessing out loud. Here it goes:
It appears to be a design flaw. If it were an ATC manufacturing flaw, then we would be swimming in transfer case replacements, loaners, apologies and no BS from dealers or PCNA... all at ATC's expense.
So the story could go like this. In the beginning, Porsche sends the driveline specs to ATC who is probably a preferred supplier. Multiple info exchanges later, probable test run data reduced and analyzed, Porsche (engineering, manufacturing, contracts, pricing, sales, etc) say okay. So now both parties hands are dirty with a yet to be known design flaw.
A few years later in production, warranty returns are coming back to ATC and getting a lot of internal interest by both parties. Lots of technical analysis and engineering judgement being thrown around. "Needs a front shaft seal because moisture is getting in there", "it needs more cooling", "it needs a vent line too", "let's try early lube changes", "should we change the lube specification", etc.
Well those do not solve THE problem but I suspect that those earlier efforts did allow THE bigger root cause to finally come to light, the clutch packs design (recall that the TC was approved by both Porsche and ATC) is fundamentally flawed, not robust enough to last more than a a few years. So we are now seeing GNC coated clutches and maybe even a change to the disk material.
So a lot of legal mud wrestling between ATC and Porsche and we the customers are getting caught in the middle of their short-sightedness.
Nothing short of a NHTSA recall is going to make this situation better.
So with that, has everyone filed their complaint with NHTSA.gov????
Last edited by CAVU; 12-09-2020 at 06:47 PM.
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karraski (02-14-2021)
12-11-2020, 01:02 PM
#1084
Race Director
hmm, i can't say i agree with your logic because there is no real safety concern. I've never seen of these boxes fail so badly that the driver loses propulsion or has a condition that results in loss of vehicle control. Basically the issue is just some clunky, jerky, or sloppiness in how the car drives. As a result, I don't see how this would result in a recall.
12-11-2020, 01:17 PM
#1085
Burning Brakes
hmm, i can't say i agree with your logic because there is no real safety concern. I've never seen of these boxes fail so badly that the driver loses propulsion or has a condition that results in loss of vehicle control. Basically the issue is just some clunky, jerky, or sloppiness in how the car drives. As a result, I don't see how this would result in a recall.
12-11-2020, 06:27 PM
#1086
Your TC may not have been bad enough but with mine if I didn't account for the slipping I can see how merging onto a road could become a safety issue. Essentially a massive loss of power when trying to accelerate.
12-11-2020, 07:17 PM
#1087
Burning Brakes
I’ve read some people saying car is surging as well. Yeah, mines not that bad.
12-11-2020, 07:33 PM
#1088
Greetings. My 2013 CTT 56K miles is making the thumping sounds in low gears. Bringing in to the dealer in 2 weeks and they said they will check it out. I will report back.
12-11-2020, 09:32 PM
#1089
Racer
I agree. I think it is a safety issue. Mine was so bad that I could hardly get up a hill. Can’t imagine what would have happened if I had to quickly get out of an intersection or it did it while passing on a 2 lane road. It was replaced in September. Now as far as a recall is concerned , I’m not sure it will solve much because I for one have no reason to believe they either know totally what the problem is or have solved it once and for all.
12-14-2020, 12:53 PM
#1090
Race Director
FYI, the dealer I made an appointment at notified me that if the Transfer case is fine or deemed not to be the cause of the issue, they will bill a $195 diagnostic fee. My symptoms are slight, so I'm expecting them to tell me its fine and ask for cash.
12-14-2020, 02:10 PM
#1091
Three Wheelin'
Let us know what they say.
12-14-2020, 02:40 PM
#1092
Race Director
will do.
of note, I disconnected the plug for the TC and it feels slightly different. The concern is that its something you'd only notice if you really paid attention.
for reference, I get a mild jerk (for lack of a better word) when very slightly getting on the throttle after a 2-3 shift.
of note, I disconnected the plug for the TC and it feels slightly different. The concern is that its something you'd only notice if you really paid attention.
for reference, I get a mild jerk (for lack of a better word) when very slightly getting on the throttle after a 2-3 shift.
12-14-2020, 03:19 PM
#1093
Burning Brakes
My experience:
West Broward: SA was an ahole over the phone. Told me they will charge me $199 upfront and no loaner since I did not buy the car from them. I said I just moved here and need something just to get around. Nope. Ok, bye Felicia never again. Do not recommend.
West Palm Beach: Truly exceptional. First class all the way. I just took it in because it was near me. I was ready to pay the $199. They said my tc is fine which was disappointing but they were very professional and acted normal which is abnormal for a Porsche dealer.
West Broward: SA was an ahole over the phone. Told me they will charge me $199 upfront and no loaner since I did not buy the car from them. I said I just moved here and need something just to get around. Nope. Ok, bye Felicia never again. Do not recommend.
West Palm Beach: Truly exceptional. First class all the way. I just took it in because it was near me. I was ready to pay the $199. They said my tc is fine which was disappointing but they were very professional and acted normal which is abnormal for a Porsche dealer.
12-14-2020, 03:29 PM
#1095
Burning Brakes
I took mine in last week and was told it's fine - which I thought they would say. If I'd never changed the fluid pretty sure it would have been replaced but it's been fine since the fluid change 40K miles ago & now at 120K.
No fee for the trouble. No loaner as those were 5 weeks out but got a ride home and a dealer-paid Uber ride back to pick it up.
No fee for the trouble. No loaner as those were 5 weeks out but got a ride home and a dealer-paid Uber ride back to pick it up.