DCT transmission leaks - DCT owners please read

[dtla1]

Originally Posted by Esteban

Those are big bucks, but at least you got it sorted out.

PS - cheaper than a new DCT, though. lol

Big Bucks for sure, but like you said, cheaper than a whole new DCT. Hindsight probably would have gone for one of the aftermarket clutch packages available, but didn't think of it a the time.

Might have also gotten away with just a fluid and filter change, but I had already made up my mind that I didn't want to deal with it anymore and if I was going to spend time and money on it, I might as well just make sure it got fixed correctly the first time.

[Aver]

Just dropped off my car at the dealer this morning I can confirm we do start leaking in either side pan, or oil pan gasket...they said my side pan gasket is leaking after getting an alignment last week and they need to drop the transmission to replace it. Luckily, it is only about $700 for me labor+parts (employee discount) but do beware DCT owners, I had no temperature warnings! maybe I caught it on time but please check it on yours before its too late!

Currently at 70,000 miles, MHD Stage 2

[dtla1]

Yup, everytime i"m either under the car or have the car on the lift I check it over for leaks, anything that looks weird, or loose etc.

[HD135]

My 2010 135i DCT had some overheating messages show up on the idrive. Was planning to get it checked out for leaks but the car only has 40,000kms on it. is it common for them to have problems at this mileage?

[houtan]

Originally Posted by HD135

My 2010 135i DCT had some overheating messages show up on the idrive. Was planning to get it checked out for leaks but the car only has 40,000kms on it. is it common for them to have problems at this mileage?

No it’s not. It’s the same transmission as in the 335is, e9x m3, m2/3/4, last gen m5. It’s very durable.

[dtla1]

Originally Posted by HD135

My 2010 135i DCT had some overheating messages show up on the idrive. Was planning to get it checked out for leaks but the car only has 40,000kms on it. is it common for them to have problems at this mileage?

I think its fairly common for a leak to develop from the the mechatronics connection on the top. Not sure if it's a one time issue (possibly bad part or installation from factory), but I've had it replaced once under warranty at about 30k miles, and been fine ever since, now at 99k miles.

https://bmwtechnician.com/2016/04/14/dct-trans-leak/

[houtan]

Originally Posted by dtla1

I think its fairly common for a leak to develop from the the mechatronics connection on the top. Not sure if it's a one time issue (possibly bad part or installation from factory), but I've had it replaced once under warranty at about 30k miles, and been fine ever since, now at 99k miles.

https://bmwtechnician.com/2016/04/14/dct-trans-leak/

Same with me. Mine was replaced under warranty at around 35k miles. But even with the leak, I never had any issues.