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2010 2011 BMW 5 Series Forum F10 BMW 5-Series (F10) Forums General 5-Series Sedan and Wagon (F10 / F11) Forum Transmission cooler leak?
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      11-28-2022, 05:38 PM   #1
tringuyen7757
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Transmission cooler leak?

2014 528i RWD here. Having a strange leak dripping from the front center jacking point. It's definitely transmission fluid but would love some opinions from where its leaking from. Transmission pan is dry and was replaced at the end of 2020 during a drain and fill service. I'm assuming its probably an o-ring from the transmission cooler line?
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      11-28-2022, 11:33 PM   #2
ezaircon4jc
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I believe transmission fluid is red...
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      11-28-2022, 11:40 PM   #3
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Originally Posted by ezaircon4jc View Post
I believe transmission fluid is red...
zf lifeguard 8 is green
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      11-29-2022, 08:08 AM   #4
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My opinion would be to get under the car and remove the shields so you can really look around. See if you see anything obvious. If not, I'd clean everything as perfectly as possible, leave the shields off, drive a bit, and check again. Judging by the puddle, I would think it would be pretty easy to see where the leak is coming from.

I believe the older 6 speed had a known issue with the sleeve where the wires ran into the transmission leaking. Something to look at.

Besides that the only other places I can think of to check would be any transmission cooler lines or the new pan. The bolts are a very low torque, could have been over torqued and cracked the pan, or maybe they didn't go over the bolts after the first pass and one is loose, or maybe they didn't clean the surface well enough before installation.
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