Porsche Macan Forum banner
81 - 100 of 179 Posts
How is the brass fitting connected to the TC vent? Maybe I don’t understand what I am looking at but it looks like there is hose between the TC vent and the brass 1/4“ fitting to the air lines for the ARB breather. How does the hose connect to the TC case vent or similar vent in the diff?
Thanks!
 
Belated thanks to ttmacan for the write-up and tech info. I just finished changing the TC fluid in our '15 Turbo at 28,000 miles. Got only a total of 480cc out of both the drain and the inspection fill ports. After installing the new drain plug, I could only put in about 300cc at the fill port before it started overflowing so I installed the new fill plug, removed the rubber vent plug and filled the remaining fluid down the breather tube. My MityVac wasn't strong enough for the job as a pump so I resorted to simply using a 20cc syringe with a 4 inch length of tubing. It was tedious but effective. Next time I'll find a larger syringe.
 
  • Like
Reactions: Shark and ttmacan
On a similar topic, I see that there's a new p/n for the drain plus: 95b301115 vs the 95530111501 we've been using. It costs more and I believe it may be a magnetic plug. Is this for the later series Macan or is it applicable to the entire range? Perhaps they believe that capturing some ferrous particles may prolong the life of the TC.
 
My understanding is that water/moisture gets in the TC fluid causing the premature failure.
 
I just bought the two plugs (95530111501) and the TC Fluid with the updated part number yesterday.

Will be exchanging the fluid this weekend! Im not sure what the new plug number is, but mine is a 2015 Turbo and ill be sticking to the og DIY outlined here.

Like jzwu said above, its water that makes the fluid go bad..but im sure a magnetic plug wouldnt hurt :geek:
 
I can understand a vehicle subjected to a flood but, when you consider the height of the vent tube, it would seem highly unlikely that moisture alone has caused the preponderance of failures.
 
  • Like
Reactions: cerbomark and Shark
Living in an area with high humidity could be it...living in an area with a lot of rain too.

It could be that the stock vent is just trash lol. Who knows. All i know is that people have had good results changing the oil after experiencing problems. Hence, why i bought all the supplies and will be tackling that this weekend.
 
I can understand a vehicle subjected to a flood but, when you consider the height of the vent tube, it would seem highly unlikely that moisture alone has caused the preponderance of failures.
If you look at the splash shield there is a scoop built in to cool the transfer case, which is right at the bottom of the car. Apparently the issue is that water goes through the scoop and hits the driveshaft. The driveshaft then which is spinning flings the water everywhere. If the transfer case is venting at that time with the stock vent the water will go in.
 
If you look at the splash shield there is a scoop built in to cool the transfer case, which is right at the bottom of the car. Apparently the issue is that water goes through the scoop and hits the driveshaft. The driveshaft then which is spinning flings the water everywhere. If the transfer case is venting at that time with the stock vent the water will go in.
So do you think there is a chance one could add a line to the original vent to avoid this water source?
 
I don t believe it s the vent and water causing this. Don t you think Porsche would just replace vent instead of having to replace cases down the road?? I have the newer case I believe and will have to see if the vent is indeed any different.
 
1. A magnetic drain plug is going to capture any ferrous metal particles that may be present in the case/fluid.

2. Capturing ferrous particles does nothing about any water which may have been introduced into the transfer case.

3. It is my understanding the updated transfer case design has a different vent or vent tube design. Does this not resolve
the issue?

4. If someone does arrive at the Porsche dealer with water-damaged transfer case internals, changing the vent tube
(if that's the only update) would not address the internal damage that has already occurred. Since this is not a 'safety'
related issue, no recall has been issued. Porsche is dealing with the issues as they are reported on a case-by-case
basis.


Does anyone have photographs illustrating the external differences between the older and newer transfer cases?
Particularly, the vent tube implementation?
 
1. A magnetic drain plug is going to capture any ferrous metal particles that may be present in the case/fluid.

2. Capturing ferrous particles does nothing about any water which may have been introduced into the transfer case.

3. It is my understanding the updated transfer case design has a different vent or vent tube design. Does this not resolve
the issue?

4. If someone does arrive at the Porsche dealer with water-damaged transfer case internals, changing the vent tube
(if that's the only update) would not address the internal damage that has already occurred. Since this is not a 'safety'
related issue, no recall has been issued. Porsche is dealing with the issues as they are reported on a case-by-case
basis.


Does anyone have photographs illustrating the external differences between the older and newer transfer cases?
Particularly, the vent tube implementation?
Same vent but added internal baffles.
 
81 - 100 of 179 Posts