Transfer Case problems of the 2011 Porsche Cayenne

Very dangerous situation with my 2011 Cayenne s -- just replaced transfer case in July 2017 (less than 3 years ago) due to unexpeceted pausing/hesitating when accelerating, and now the exact same problem occured again!!! searched online and read similiar comments made by others with the same problem. Porsche has to recall and fix this -- it's very dangerous and could be life-threatening.

Transfer case while driving started jerking while on the highway. . It has slowly gotten worse and has become dangerous to drive as I almost have got into a few accidents due to the surge in sudden jerks. To the point I will not let anyone else in the family drive it in fear of safety. I took it to the shop and was told it needs a new $5,000 transfer case. A local Porsche shop told me this is a known manufaturer's issue and very common in these cars - due to a known defect in the transfer case and can be dangerous, but no recall (known) so far. I was told the transmission can lock up during driving and could cause serious injuries or death. I am now scared to drive it. I have a luxury vehicle that I am paying insurance on of which I can't drive that is useless sitting in my garage. This was my 1st Porsche and sadly may be my last if this is not resolved. I have read tons of reports on forums citing this same problem. If this is such a known hazard what will it take to have porsce do the right thing and recall & get this fixed? I pray they are not waiting for a death first.

Car had transfer case replaced at 20k and now told to do again at 46k. Sudden jerk and loss of acceleration when car is going from 3 to 4 gear or under 25mph. Issue seems to be pretty much on most Cayennes and cost $5000 to repair. Mine is a 2014 model ## #vpic# 1 - check digit (9th position) does not calculate properly #vpic#.

Transfer case has failed, jerking and interruption of accelerations. Almost caused a wreck. Very well known problem and there are a lot of similar complaints on the NHTSA complaint log system as well as documented online. I called Porsche and they denied knowing about any problem with it but you can call the service departments at any Porsche dealer and they immediately know about the problem. I called two and they know of it as a common problem. Extremely expensive to correct ($5,000).

I have had the transfer case replaced in this vehicle twice in the last 25k miles. At 65k miles the car is doing the familiar grinding and surging again, evident it will need a third $5-6000 transfer case. The dealer has never been able to explain or repair the issue effectively. The manufacturer does not reply to inquiries, it is my request that they be forced to provide a permanent, reliable fix for this issue. I'm worried this could cause a safety issue under the right circumstance since it happens while the car is in motion. The mechanics at the various dealers have told me its a well known issue spanning Porsche suvs from 2008 through the present. Gotta wonder what this manufacturer is thinking here and why they are hiding the details.

Transfer case failure. There is an acknowledgment by Porsche of an associated defect of the transfer case design and a related workshop bulletin (wb) when replacing the transfer case. Porsche mechanics are instructed to replace a "vent hose" for the transfer case. This newly revised design part number for the revised vent is 958-301-047-10. The reason: the original design for Cayenne 958 Porsche transfer cases had the hose ending on the lower (closer to the ground) side of the transfer case. The new hose ends on the upper (further from the ground) side of the transfer case. Porsche determined that moisture was getting sucked into the cases and causing fluid contamination. Since the transfer case uses a "multiplate wet clutch", moisture could prematurely corrode or allow rust to form, which could cause the clutch to bind and work erratically. These are symptoms described by multiple owners of 958 Cayennes discussed in Porsche forums (e. G. Renntech. Org, rennslist. Com, etc. ). This revised vent developed by Porsche to replace the existing design, should be covered by Porsche. Moreover, owners of 958 Cayennes who have experienced failures of the transfer case and subsequent replacement of the transfer case and the newly designed hose, should be reimbursed for the full cost of the replacement transfer case and the hose. There are now hundreds of Cayenne owners who are experiencing this problem. Moreover, the maintenance schedule does not call for any preventative fluid changes of the transmission oil. This should be revised and recommended servicing should be prescribed (e. G. , every 10,000 miles). The failure of the transfer case could cause vehicles to lurch or react in an erratic or unsafe capacity across the spectrum of operation, including highway speed driving. Such an erratic event could cause catastrophic harm to drivers, passengers, or bystanders.

Vehicle acts as if going over speed bump over 18mph also jerking and tugging on you as you accelerate making for hard turning in parking lots feels like front wheel is locking up also noticing safety concern wile coming to stop in traffic under about 3mph the vehicle suddenly and unexpectedly learches forward as if engine has more power or something becomes un jammed. Transfer case has been replaced once already now out of warranty it feels as if a safety concern is the issue.

Transfer case failed 2016 ; was replaced by dealer and failed again 2017. While driving failure affects shifting and acceleration.

The transfer case in this car is failing at 50,000 miles leading to potential lock up of wheels, axles, or total breakdown/shutdown at highway speed if not corrected. There are numerous known owners experiencing the same issue.

Transfer case went bad at 64k miles. Three TSB's on transfer case problems including the very issue my car has.

The transfer case clunks and grinds when driving turning and in reverse with only 60,000 miles on the car and the dealer said it needs to be replaced, from what I have read this is a wide spread problem.

I was pulling forward on a level city street and turning left from a stop sign. There was a significant amount of shuddering and feeling of a loss of power. This was a significant safety issue due to oncoming traffic. Over a period of several months this had been increasing in severity but the dealer could not identify the problem. I took it to the dealer and was able to repeat the problem for them. They identified the transfer case as the issue. It was replaced. I also had to replace the tires due to the dealers identification that the transfer case had caused differential tread wear damage to a rear tire. As a former military aviator, there is no doubt in my mind that this is a safety issue. Porsche needs to identify what the issues are (design, manufacturing, servicing, etc) and remedy them. Surprisingly, this is a known problem because the service adviser informed me that they keep transfer cases in stock. They retail for $3944, plus the new vent kit (mine does not have it) and then add labor, and tires if they have been damaged. That is a lot of expensive inventory to have on hand if Porsche wants to claim there is not a problem.