E92 DCT Leak Help

LowBeam · 11-19-2023, 04:16 PM

I’ve researched a ton on these and recently did a transmission flush with new bottom pan and all seals. It seems to still be sweating from the pic attached. Anyone else here that has sean a leak from the circled area, or any help on how to fix it?

spammysammich · 11-19-2023, 05:33 PM

Search for mechatronics harness o-ring in the DIY section of this site. You might need a borescope/endoscope to see the source of the leak up top.

spammysammich · 11-19-2023, 05:36 PM

If not that o-ring check the pressure filter cap area for leaks. Clean everything off with brake cleaner run the car for a day and inspect for leaks. Alternatively you can add fluorescent dye to the DCT oil, run the car and shine a black light on the car to trace the leak.

LowBeam · 11-19-2023, 05:40 PM

That is a great idea, I’ll try the dye to see if I can get it figured out. Thank you.

11-19-2023, 04:16 PM	#1
LowBeam Private 0 Rep 67 Posts Drives: 2009 335xi Sedan Join Date: Jul 2013 Location: Denver,CO iTrader: (1)	E92 DCT Leak Help I’ve researched a ton on these and recently did a transmission flush with new bottom pan and all seals. It seems to still be sweating from the pic attached. Anyone else here that has sean a leak from the circled area, or any help on how to fix it? Attached Images
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11-19-2023, 05:33 PM	#2
spammysammich Major 1606 Rep 1,128 Posts Drives: 2009 E92 M3 Dakar Yellow II Join Date: Oct 2021 Location: Edmonds, WA iTrader: (0) Garage List 2009 BMW M3 [10.00]	Search for mechatronics harness o-ring in the DIY section of this site. You might need a borescope/endoscope to see the source of the leak up top.
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11-19-2023, 05:36 PM	#3
spammysammich Major 1606 Rep 1,128 Posts Drives: 2009 E92 M3 Dakar Yellow II Join Date: Oct 2021 Location: Edmonds, WA iTrader: (0) Garage List 2009 BMW M3 [10.00]	If not that o-ring check the pressure filter cap area for leaks. Clean everything off with brake cleaner run the car for a day and inspect for leaks. Alternatively you can add fluorescent dye to the DCT oil, run the car and shine a black light on the car to trace the leak.
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11-19-2023, 05:40 PM	#4
LowBeam Private 0 Rep 67 Posts Drives: 2009 335xi Sedan Join Date: Jul 2013 Location: Denver,CO iTrader: (1)	That is a great idea, I’ll try the dye to see if I can get it figured out. Thank you.
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