Is this part of the transmission?

De1ta · 02-17-2020, 08:53 AM

Saw this while inspecting the oil pan. It is behind the pan, can see it through a gap in the skid panels. The photo has been flipped so I could read the numbers easier but google is no help.

F30 335i 2013

Is that oil/dirt buildup normal?

F32Fleet · 02-17-2020, 09:49 AM

looks like seepage around that particular area.

Fliplegend · 02-17-2020, 12:32 PM

I see "ACM" on the top right of the pic so to me, that tells me it's the transmission module control.

De1ta · 02-17-2020, 12:35 PM

Thank you

plurant · 02-19-2020, 05:15 PM

this is an inspection plug and it is on the bell housing, if it's wet you might have a small leak on the torque converter seal, the pump (rare) or the input shaft seal.
the tcu is part of the mechatronics unit wich is internal so acm means nothing.

i'd remove it to see if there is more oil inside and if no i'd not worry about it.

how many miles has this car ?

De1ta · 02-24-2020, 10:06 AM

Hey - 78,000 miles. The dealer check it for me and said no leaks...and they are replacing oil pan under warranty so I'm sure they'd tell me if it was leaking...

02-17-2020, 08:53 AM	#1
De1ta New Member 6 Rep 21 Posts Drives: 2020 M340i Join Date: Jan 2020 Location: USA iTrader: (0)	Saw this while inspecting the oil pan. It is behind the pan, can see it through a gap in the skid panels. The photo has been flipped so I could read the numbers easier but google is no help. F30 335i 2013 Is that oil/dirt buildup normal? Attached Images
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02-17-2020, 09:49 AM	#2
F32Fleet Lieutenant General 3629 Rep 10,393 Posts Drives: 2015 435i Join Date: May 2005 Location: Southeastern US iTrader: (0)	looks like seepage around that particular area. __________________ "Drive more, worry less. " 435i, MPPK, MPE, M-Sport Line
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02-17-2020, 12:32 PM	#3
Fliplegend Captain 1509 Rep 988 Posts Drives: 2015 435ix F33 Join Date: Nov 2018 Location: NH iTrader: (0)	I see "ACM" on the top right of the pic so to me, that tells me it's the transmission module control. __________________ 15' 435i F33 Metallic Grey/Dakota Black/Contrast Blue \| AWD \| M Sport 15' 328i F30 Mineral White/Dakota Saddle Brown \| AWD \| Luxury Line
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02-17-2020, 12:35 PM	#4
De1ta New Member 6 Rep 21 Posts Drives: 2020 M340i Join Date: Jan 2020 Location: USA iTrader: (0)	Thank you
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02-19-2020, 05:15 PM	#5
plurant Enlisted Member 11 Rep 32 Posts Drives: 320D F30 2012 Join Date: Apr 2018 Location: France iTrader: (0)	this is an inspection plug and it is on the bell housing, if it's wet you might have a small leak on the torque converter seal, the pump (rare) or the input shaft seal. the tcu is part of the mechatronics unit wich is internal so acm means nothing. i'd remove it to see if there is more oil inside and if no i'd not worry about it. how many miles has this car ?
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02-24-2020, 10:06 AM	#6
De1ta New Member 6 Rep 21 Posts Drives: 2020 M340i Join Date: Jan 2020 Location: USA iTrader: (0)	Hey - 78,000 miles. The dealer check it for me and said no leaks...and they are replacing oil pan under warranty so I'm sure they'd tell me if it was leaking...
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