Dreaded t-case issue question.
My questions: Any idea how long these things take to fail? Is there a driving style that puts more stress on the bearing to help move it along? I love the car but can't handle the noise
2013 C300 4Matic




I have supersonic hearing apparently so I caught mine relatively early but I still got it progressed a bit before I changed, not loud however.
It's a really weird situation, because I haven't actually seen anyone blow the transfer case, I think they get it changed when the noise comes. So, if anything, eventually the metal fragments with flow through the entire transmission and then maybe blow it up, but I still don't know how long it would take.
Otherwise just do launches at like 6,000 RPM or something haha. But then it would be considered your fault wouldn't it xD
I have supersonic hearing apparently so I caught mine relatively early but I still got it progressed a bit before I changed, not loud however.
It's a really weird situation, because I haven't actually seen anyone blow the transfer case, I think they get it changed when the noise comes. So, if anything, eventually the metal fragments with flow through the entire transmission and then maybe blow it up, but I still don't know how long it would take.
Otherwise just do launches at like 6,000 RPM or something haha. But then it would be considered your fault wouldn't it xD




I'm the market for a 2012 C300 4MATIC and this is just scary to read.
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The replacement parts are very stout oil passages have been opened up more for better lubrication to transfer case bearings.
all so a bunch of other parts have been superseded with improvement parts.




As a general rule of thumb, 2013+ with the 7G+ trans we haven't really seen much issues as I mentioned. If you want to be 100% sure to avoid the problem, buy the RWD model. It's not a problem that affects all of them, but those who get it pay $$.
Sometimes in the Carfax you can see replaced. If it has been replaced I would take that as a good sign, cause the new ones were fixed.
Regular fluid changes will probably help to avoid this I think.




