wOOge

Update: MB dealer confirmed after a full diagnostic that it is an issue with the transfer case/transmission and they are ordering a replacement transmission for my 2013 C300 with 37,000kms —*Luckily it's all on warrantee.

Question for the wise forum: Should I trust the replacement? Are the 7G-tronic trannys just inherently prone to eventually going bad?

xEryx

Well... We all believed the issue was fixed in later models (at least 2012+), but it looks like is not the case and the only transmission you can trust is one re manufactured by MB with better parts. If a 2013 7G Tronic Plus failed then that means either you are extremely unlucky or the issue is consistent across 2008-2014 W204 and 7G Tronic/7G Tronic Plus.

tekfoc

WELL take this with a grain of salt.
MERCEDES TECH SAID they have not seen one remanufactured transmission come back yet.
remanufactured transmission is superseded with many updated parts.
much better bearings and machining to improve oiling passages .

xEryx

Isn't it likely that he will get a new one with the same faults though since he's under warranty?

wOOge

That is the question isn't it. I'll ask the MB dealer whether or not the replacement tranny is factory rebuilt or all new. I assume because the W205's are now in production that it will be rebuilt.

wOOge

Update: MB Dealer says the replacement is an MB rebuilt tranny.

tekfoc

here is what the SA said to me , they do not install new transmissions.
owner would have to come out of pocket for a new transmission.
my transmission was replaced on original factory warranty .
around 19.000 or 20.000 miles don't remember.

tekfoc

believe me a lot better then a new one.
just make sure they prime the planetary clutch pack right (inside transfer case) other wise you will be back for groaning vibration on tight turns.

Julie7

My 2008 C-300 4 matic with 78,000 miles had the same transfer case problem. Dealer told me I needed a new transmission for $7000. I am trying to find out if the 2016 C-300's still have the same issue or has it been fixed. If I buy a 2016 C-300 without 4 matic will that eliminate the problem?

wOOge

My understanding is that the 2016's have the same 7G Tronic PLUS found in model years 2013+

Julie7

Does no four wheel drive equal no transfer case? So, if I buy a 2016 C-300 with no 4 matic is the problem solved?

dennish

Rear wheel drive(non 4matic) does not have a transfer case. So, yes this problem is not present.

Prago

I wouldn't say one transmission failure indicates that the problem wasn't addressed, especially given that his transmission failed in far less time/miles than the usual. That could just be bad luck. Also, if the remanufactured parts were developed prior to the 7G-tronic +/build date of your car, chances are the changes were incorporated into the new transmission. It would just cost Mercedes more $$$ otherwise.