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Old 01-27-2020, 05:49 PM
hemsm hemsm is offline
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Location: houston
Join Date: Jan 2020
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Mein Auto: 328i
2012 328i Transmission oil cooler leak

Hi Guys,
I noticed my car is jerking at low speeds from last 10 days, Last week I got "Drivetrain Malfunction" message. Took the car to local BMW specialist. He said the transmission oil cooler is leaking and gave me a quote for $2100 for repair. When asked what exactly he is going to replace, he mentioned below list:

1) Replace Transmission oil cooler.
2) Cooler Housing.
3) Fluid.
4) Re-program the vehicle.

He also warned that the transmission might have damaged and can cost around $7500. I am really puzzled.

My wife drives the car and she only puts around 6000 miles/year. The car currently has 60K miles. I took the car to dealer for oil change in October and he gave a clean report after inspection. Really wondering what might have went wrong within 3 months of light driving.

Also not sure the $2100 quote he gave is justified. He said the leak is showing on the fins so needs to replace all the above list. I am thinking to taking the car for second opinion.

Need help from experts on the cost and the issue with car?
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Old 01-29-2020, 08:04 PM
JoeyMcMahon666 JoeyMcMahon666 is offline
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Location: Iselin , NJ
Join Date: Jun 2018
Posts: 184
Mein Auto: 2004 BMW 530i e60 5 serie
This sounds like BS... did he physically show you it was leaking? If not, run for a second opinion now

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Old 01-30-2020, 08:58 AM
FredoinSF FredoinSF is offline
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Location: Reno NV & Healdsburg CA
Join Date: Nov 2009
Posts: 7,008
Mein Auto: 4 BMWs, 1 Mini, 1 Vespa
Agree this sounds like a fleecing and second opinion is advised. There may be a separate seal that can be replaced rather than entire oil cooler. Look up the part diagram for your car at realoem.com.
2018 540ix
2015 428i convertible
2013 Cooper S
2007 650i - 6 speed
2002 330ci convertible - 5 speed

2012 X5 Diesel
2012 Countryman S All4 - 6 speed
2006 Cooper S - 6 speed
2006 330i - 6 speed
1997 328is - 5 speed
1991 318is - 5 speed
1988 635csi - 5 speed
1988 325i convertible - 5 speed
1969 2002 with tii and 5 speed conversions
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Old 02-10-2020, 06:47 AM
buuza33 buuza33 is offline
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Location: Jersey City
Join Date: May 2016
Posts: 35
Mein Auto: 2013 528xi Black Sapphire
I have exactly the same problem.

Had troubles with trans (4.5 liter leaked oil), the mech refilled trans fluid, but suggests to fix the leak and do full trans service - $1800. Not sure if he wants to replace the whole thing or just gaskets.
It still leaking right now, i've been driving it like 10 days, not sure how much oil i lost in these days.

bmw 528i xdrive 2013

[IMG] https://ibb.co/T8gB1Mk [/IMG]

Last edited by buuza33; 02-10-2020 at 06:52 AM.
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drivetrain malfunction warning, f30 3 series, jerking, oil leak repair, transmission cooler

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