When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
For the next time my transfer case fluid needs to be changed I picked up a set of Gear Wrench 81160 stubby hex metric bits for 1/4 inch drive:
What kind of 1/4" drive torque wrench do you use with those stubby hex metric bits? Is there enough space between the transfer case fill plug and car frame to maneuver the torque wrench with hex bit into the plug to get it torqued down properly?
I planned to use the Harbor Freight 1/4 inch torque wrench with the stubby hex bits. You can get one for as low as $13 when on sale. My plans changed when I couldn't get Durametric to read the V40 value that logs gear oil usage. I had the dealer change the transfer case oil and reset V40. On my 2015 CD there was plenty of room to access the drain and fill plugs unlike the photos posted here where folks had to trim down an allen wrench to gain access. YMMV. Recall that the diesel and the hybrid cars use a different transfer case than the gas cars.
Transfer case P/N on my CD = 958 341 020 03
Last edited by r553; 06-20-2017 at 03:56 PM.
Reason: added TC P/N
The transfer case drain and fill plugs can easily be accessed on the gasoline engine models. No special wrench is needed. They are probably the easiest plugs to get to on a 958.
Tech at a local VA dealer indicated Cayenne transfer cases are much more readily available than for the Macan.
Yep, exactly. The SA at my dealer (also VA) said that Macan TCs were on back order. And it wasn't long ago that Cayenne TCs were on back order too, but I guess they've caught up on that supply.
My TC was changed back in January as you could fell some "kicks" from the drive train when starting from rest, especially in traffic.
2014; CTT (with PTV & PDCC); 38000 km (23,000 miles); Quebec, Canada; AT; Porsche OEM; Aigle836; TC replaced under warranty.
I see that they added the vent line transfer and the new TC is 9583341010HX.
Dealer had the TC in stock and was done the same day. Looked like it was quite a common repair....
Yep, had the same done to my '11 CTT (PDCC & PTV+) just recently as well. I sure hope the TC with the new part # and the vent kit prevent this from happening again, but we'll see over time.
Although you appear to have a different part # listed for your new TC versus the one for mine. Maybe this has to do with yours being a different model years perhaps? Here's some info from a previous post earlier in this thread following my service at the dealer...
The first transfer case was part # 958-341-010-FX. This new one is 958-341-011-EX. The tech noted on the invoice "Recommend: transfer case and update parts". The other parts listed are as follows:
1 N-103-284-01 Line Bracket
1 958-301-047-10 Vent Line Transfer
1 N-107-873-01 Spacer Ring
1 02H-409-275-A Sleeve
1 958-341-375-01 Protective Ring Tran
1 WHT-005-158 O-Ring
1 958-349-491-10 Circlip Transfer Box
I have had the same problem on my 2013 Cayenne S (under CPO ~ 66,000):
Symptoms: low RPM and hard pull hesitation, lapse in power, "thumping," etc. as described by others. Initially the problem only occurred sporadically but became an every drive occurrence and then, near the end, a cause for significant alarm while operating. Just before the fix was installed, I could not rely on the car to accelerate when needed.
PROBLEM: Bad Transfer Case, most likely due to over-heating due to an initial failed design.
Explanation: With the transfer case out, the car fights itself between all wheel drive, various distributions of power to the wheels, etc. causing the violent, yet not catastrophic, symptoms listed above.
Fix: Replace the Transfer Case with a new unit that has been adapted with ventilation.
Background: The gentlemen at Perfection Plus Auto (the service department of the now-closed Porsche dealership in Little Rock) diagnosed the issue within 45 seconds of driving my Cayenne--without even having to leave the parking lot.
(And, BTW if one lives in Little Rock or Central Arkansas, you will not find more down-to-earth, Porsche-loving enthusiasts/technician/owners than the guys AT PPA — I cannot recommend them enough — all active members of PCA)
They reported to me that, regrettably, they have seen problems on Cayennes and Macans — across all model years (including 2017). Apparently, this is a very, very common issue with the SUV.
Upon reflection, it seems extremely odd—and troubling given the Diesel issues of the last few years—that Porsche has neglected to move forward with mandatory re-call on this part. The technicians I spoke with at two different garages have a constant stream of Cayennes and Macans entering for the fix. The problem is due to a defective part, not user error nor regular wear and tear.
What is further troubling is that there is no way for the service department to detect this problem with their computers, which is normal protocol during servicing. Rather than driving the car to diagnose an issue, the service department relies on error messages from the onboard computer and/or an alarm code that is read by their computer system hooked to the vehicle. In other words, there is no way to identify the problem unless the owner knows about the transfer case issue or has the time to take the car and demand that the service department drive the car with the owner. Fortunately, in my area, I have access to an expert who has a passion for the brand and is a heck of guy — he was able to volunteer his time, explain the issue to me in unambiguous terms, put me on the right track for the repair under warranty. However, although the issue expressed itself intermittently over the past 2 years, none of the actual Porsche dealerships where my car was services diagnosed or even were alerted to the Transfer Case failure.
Due to the volume of Transfer Case failures across multiple model years (I have read of issues as far back as 2008) and the troubling issue of loss of power, Porsche could be looking at a major liability if there is a severe accident or fatality due to this known—yet unaddressed—issue (I am thinking of the Audi break scare of the 80s, which scarred that brand for a decade). I certainly would never wish harm to anyone and certainly not to Porsche—a brand I adore, admire and enjoy—however, I perceive a major oversight in quality control. Given this, I have to wonder — what other issues might express themselves with the car?
Now saying all of THAT….I have no intention of de-acquisitioning my Cayenne. I love the car. I love the engine. I love the sound, feel, look of it (its the closest one can come to falling in love with an inanimate object) and plan to keep it until it falls apart or I am put in the ground (that or I upgrade to a GTS or Turbo S). However, I do hope that Porsche becomes more aggressive in resolving this issue with other customers. For me, it was a 1-day investment covered by the warranty. However, had I waited another 4 months, I would have been out several thousands dollars for the replacement part and labor.
I am attaching my service ticket with associated replacement parts in the hope that it will prove useful for other owners who are experiencing similar concerns.
As I have seen this issue on multiple boards, I am posting in several locations, including:
Upon reflection, it seems extremely odd—and troubling given the Diesel issues of the last few years—that Porsche has neglected to move forward with mandatory re-call on this part.
A recall would presumably have to involve having found the cause and established a specific fix. I'm of the impression that they've not yet fully nailed down what causes it, or how to totally prevent it from happening again. Thus no replacement service campaign, yet.
My TC was replaced in january 958-341-010-HX. I am going to check with my dealer to see if this part number had the update for adding a vent line.
Anyone have the workshop instructions for the vent line installation?
Based on the receipt I see, the vent parts are:
958-301-047-10 Vent line
N-103-284-01 Line bracket
N-107-873-01 Spacer Ring
In addition to the parts you mention for the vent line kit, there's also some other updated parts to include a 'Protective Ring Tran' which as I understand is a sort of splash shield for the transfer case.
Also there seems to be a new/updated part # now for the replacement transfer case being currently installed. See the part #s listed for my recent TC replacement:
My first transfer case was part # 958-341-010-FX. This new one is 958-341-011-EX. The tech noted on the invoice "Recommend: transfer case and update parts". The other parts listed are as follows:
1 N-103-284-01 Line Bracket
1 958-301-047-10 Vent Line Transfer
1 N-107-873-01 Spacer Ring
1 02H-409-275-A Sleeve
1 958-341-375-01 Protective Ring Tran
1 WHT-005-158 O-Ring
1 958-349-491-10 Circlip Transfer Box
My TC is failing and the local specialist that I use (Bay Area) was going to replace it for me. Unfortunately they just couldnt get one ordered and delivered! Waited weeks and the delivery time just got longer and longer and then unconfirmed! The specialist called a number of dealers as well as PNA for updates on this and got some troubling information.
So many are failing and they had such a backlog that they couldnt get a confirmed delivery! In fact, they were hearing that even replaced units were failing and customers were getting 2 or more! However, since the parts are from Porsche direct, they are covered by a 2 year unlimited mileage warranty - so any failure would be replaced free of charge - just inconvenient.
We actually decided to not replace at this point and to wait - flush the TC fluids regularly and delay things a little. That way we can make sure that any replacement is with a rectified unit that is going to last. A TC is supposed to last hundreds of thousands of miles with limited but routine maintenance. Less than 100,000 miles is a joke and I certainly dont want to be staring down the barrel of $4000 in a couple of years time!
I really hope they get on top of this and make sure that this is fixed. From what the specialists were able to get out of Porsche, they suggest it was a bad batch from the manufacturer, who is sorting it out. But without knowing what is bad, why and how they fix it - its all just rumor and conjecture I am afraid.
06-04-2017, 01:45 AM
