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      08-15-2019, 07:09 PM   #73
DuckCoverRoll
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Drives: 2018 M3 (comp)
Join Date: Aug 2014
Location: PACIFIC NW

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Quote:
Originally Posted by dtla1 View Post
Does the transmission temperature warning light come on? Your issue sounds like a big pain I went through. Had to really rev the engine high up to get it to start moving. The transmission would down shift very harshly at what seemed to be random times (would downshift into high RPM while driving casually). The error would clear itself for me too, but it would come back all the time as well, either randomly while driving, or as I pulled into the driveway of the duplex I was living at. Let me know if this is what you have, I can talk you through my thoughts and what I did to fix it.
Thanks! Yes - sounds similar -- I don't recall whether the transmission warning light came on, but the transmission malfunction notification showed up on my nav screen (it said, transmission fault, drive moderately - some gears may not be available). Would love to hear what happened with yours and what steps you took to fix it. My independent mechanic didn't find any leaks (which he thought could cause a short on the transmission sensor). If it is mechatronics, I'm looking at a huge repair bill (ugh!). thanks!
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