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      04-21-2015, 03:40 PM   #89
popparoon
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Well guys the the DCT leak problem lives on in the M4. Lower pan leak after only 800 miles!
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      04-21-2015, 04:46 PM   #90
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That is ridiculous. Goood thing you posted that in this section of the forum or the admins might ban you on the f8x forum.

I think <1000 miles is absurd to spring a leak. Hopefully it isn't a widespread issue.
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      04-21-2015, 06:08 PM   #91
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Quote:
Originally Posted by popparoon View Post
Well guys the the DCT leak problem lives on in the M4. Lower pan leak after only 800 miles!
That's just absurd. Perhaps they forgot to properly torque the bolts at the factory.
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      04-29-2015, 09:49 PM   #92
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Mines leaking now too... 42,000km on it. Coming from the mechatronic cover.

Now I'm worried the dealer will deny my claim because it's somewhat small so far. I've been in for 4 DCT claims in 3 months of owning the car. Mine used to do all sorts of wacky shit.

I'm going in Wednesday... Let's hope they just fix it.
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      04-29-2015, 11:04 PM   #93
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Quote:
Originally Posted by 3SPKY5U View Post


Mines leaking now too... 42,000km on it. Coming from the mechatronic cover.

Now I'm worried the dealer will deny my claim because it's somewhat small so far. I've been in for 4 DCT claims in 3 months of owning the car. Mine used to do all sorts of wacky shit.

I'm going in Wednesday... Let's hope they just fix it.
Yeah I was worried as well when I had to take it in. The initial response was if it was "weeping" they probably would not repair it under warranty.

If it was "seeping" they would. They ended up working with the 3rd party warranty company and replaced all the gaskets (top, side and bottom) along with screws etc.

Fingers crossed for you! I followed your other thread on your DCT issues and glad THAT chapter is behind you! It really sucks that the transmission needs to be dropped to replace the side and top seals or most people would just do it themselves and be done with it every XXXX miles.

Times like this... 6MT sounds pretty good lol.
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      04-29-2015, 11:12 PM   #94
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Quote:
Originally Posted by BzsBimmer View Post
Yeah I was worried as well when I had to take it in. The initial response was if it was "weeping" they probably would not repair it under warranty.

If it was "seeping" they would. They ended up working with the 3rd party warranty company and replaced all the gaskets (top, side and bottom) along with screws etc.

Fingers crossed for you! I followed your other thread on your DCT issues and glad THAT chapter is behind you! It really sucks that the transmission needs to be dropped to replace the side and top seals or most people would just do it themselves and be done with it every XXXX miles.

Times like this... 6MT sounds pretty good lol.
As does the 6 speed 997 turbo I'm considering trading for... Or the RS5...

My service advisor is a friend of mine though, so I'm hoping he will push it through. If not I'll just make a giant deal about it and bitch out BMW on local groups.

My DCT still does weird shit. When it's cold still and I stop sometimes the car tries to jump forward a bit.



This seems seepy, no? It's caked in that nasty grime that appears when oil mixes with dirt after it's been there a while.

I sent that exact picture to my SA and he booked me, so I'm assuming BMW will ok it.

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      07-14-2015, 11:59 AM   #95
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Quote:
Originally Posted by popparoon View Post
Well guys the the DCT leak problem lives on in the M4. Lower pan leak after only 800 miles!
Is it the same DCT unit as the ones in the E9x's?
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      07-14-2015, 08:42 PM   #96
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Originally Posted by omniphil View Post
Is it the same DCT unit as the ones in the E9x's?
The DCT transmission is actually different in shape (connecting to engine) and PN however the components such as belly pan and gasket and mechatronics gaskets are the same PN.
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      09-12-2015, 05:13 PM   #97
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Original owner 2009 E92 DCT with 53xxx miles now on BMW extended warranty. After reading these leaking DCT threads and gently prodding my dealer to remove the DCT undertray- they found the side and bottom covers leaking. Haven't seen any paperwork yet- but SA said the tech ordered parts to repair bottom, side and top gaskets since they've seen all of these before. To be covered under warranty. Sucks they have to drop the tranny.
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      09-12-2015, 06:46 PM   #98
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2012 DCT 20k miles, second owner here with a leak as well. Scheduled an appointment with local dealer hopefully it can be fixed promptly.
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      09-18-2015, 05:43 PM   #99
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Galloping in Where Angels Fear to Trot

My E92 M3 had a slow DCT leak at 50000 km (30K miles), just out of warranty, and because both seals leaked they had to drop transmission so bill was about $2000, with nearly 60% spilt to parts. Initially I was livid, because the DCT oil pan is plastic, but I figured I got to change the transmission oil, which is something I wanted to do anyway, albeit this was a bit earlier than expected. At least I know the DCT fluids are good and I've now put this down as a service item every few years. Meh.

Despite this, and me proactively changing the throttle actuator gears (from a fellow who makes them using delrin and brass in the UK, which ended up being about $1400), the M3 has been cheaper to service than my wife's Benz A170 this year! The Benz which has needed new front brake pads and rotors, an air con service, plus a new exhaust gas system to replace one ten cent $@##! leaky EGR valve because it's embedded in the whole exhaust manifold plastic bit leading from the engine and you can't replace it separately (although there's one you can, this one you can't).

Anyhow, my Indy mechanic who looks after a number of m3s and 335 with DCT said the leaky transmission was more common than you'd expect. My tuppence's worth
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      10-14-2015, 12:18 AM   #100
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for those of you that have had to do this service out of warranty, what are you paying?
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      10-14-2015, 07:29 AM   #101
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Quote:
Originally Posted by See-Fu View Post
for those of you that have had to do this service out of warranty, what are you paying?
$1000 for labor
$750 for parts (lower pan, fluids, both gaskets, both filters, o-ring, mounts, all new bolts)
I did not replace the side pan as it was expensive and its metal so its not like its bad or anything.
I had to replace the 2 transmission mounts as they were both completely broken and you wouldn't be able to tell without the transmission out.
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      04-06-2016, 12:33 PM   #102
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Quote:
Originally Posted by See-Fu View Post
for those of you that have had to do this service out of warranty, what are you paying?
I just joined the leak club as well. Dealer quoted me $3000 (!). Planning to wait until my next oil change to make a decision on how to address it.

2011 31K.
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      04-07-2016, 12:12 PM   #103
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Has anyone here experienced leaks on the seals in question, following a DCT fluid flush whether it is recent or way before? Fluid expands, and if you fill too much or even a bit more than you should it would cause constant seal issues.
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      04-07-2016, 02:52 PM   #104
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Quote:
Originally Posted by lepp0012 View Post
I just joined the leak club as well. Dealer quoted me $3000 (!). Planning to wait until my next oil change to make a decision on how to address it.

2011 31K.
Sad. Did mine at 19k a year ago. So far so good but a quite annoying design flaw on BMWs side.
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      04-07-2016, 02:53 PM   #105
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Quote:
Originally Posted by Mfanatik View Post
Has anyone here experienced leaks on the seals in question, following a DCT fluid flush whether it is recent or way before? Fluid expands, and if you fill too much or even a bit more than you should it would cause constant seal issues.
Don't believe its possible to overfill as it will start poor out mate.
Btw the fluid won't expand.
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      04-07-2016, 03:13 PM   #106
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I just replaced my DCT pan and two filters on Sunday. I bought the new pan off of eBay for $85 and the filters from Husker were not too expensive but the Pentosin fluid was $28/liter. It was a messy but not particularly difficult job to do. If you aren't doing the side filter then it is really easy. With SimiM3's instructions (thanks SimiM3!) it wasn't that bad to do the side filter with removing the pipes except for getting the big snap ring out with my Harbor Freight snap ring pliers. I thought for sure that it would take 6 liters of DCT-1 fluid because it looked like a lot had leaked but with filling it 3 times and running the car in between and then using the lift to tilt it a bit sideways away from the filler I barely got 5 liters in. I was surprised that when I opened the fill plug before anything else a decent amount came out. I will look this weekend to see if anything is still leaking.

Last edited by WayneM3; 04-07-2016 at 03:28 PM..
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      04-10-2016, 01:15 AM   #107
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Quote:
Originally Posted by lepp0012 View Post
I just joined the leak club as well. Dealer quoted me $3000 (!). Planning to wait until my next oil change to make a decision on how to address it.

2011 31K.
local shop did it for 1k total
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      04-10-2016, 03:00 AM   #108
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Someone needs to make viton gasket for this
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      06-09-2016, 05:52 PM   #109
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a quick update, I replaced my lower pan, side gasket and 2 high-pressure hoses a year ago @51k miles. after a year 7k miles, one of the pressure hose is slowly dripping at the crimp fitting and there's a tiny amount of weeping from the vertical side gasket. I did use all oem replacement parts, and the tech torqued them to bmw spec, so it seems either bmw has some design/quality control issues or I am just extremely unlucky.
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      06-13-2016, 10:41 PM   #110
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Quote:
Originally Posted by rantarM3
Unfortunately I found my DCT (32K miles) seeping fluid out through the mechatronics seal and possibly also the lower pan. It seems to be a relatively frequent issue with many cars and in many instances, is covered under warranty. What I have not been able to find much information on is whether this issue reoccurs on cars that have had the seals replaced once already.

Does anyone know if the seeping is caused by seal failure, loosening bolts, or some other cause? I have a hard time believing that the seals go bad so quickly and am thinking it may be attributable to the bolts working themselves loose over time, such that a periodic re-torque would prevent it in the future. I know that some believe that the lower DCT pan warps because it is plastic but the mechatronics cover is metal and would not seem prone to warping.

Lastly, has anyone tried to simply re-torque the bolts after discovering a leak and have good results?
I had that problem before it's the sealed as we speak my car in at the Dealership right now I went in for brakes and they found an oil leak and they told me it's the sealed
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