Transmission issues?

Tiny
YOOOOO
  • MEMBER
  • 2016 BMW 540I
  • 3.0L
  • 6 CYL
  • TURBO
  • 4WD
  • AUTOMATIC
  • 90,000 MILES
Had these codes pop up on my 340i x drive.

The story: Started up the car in 10-degree weather; I let it warm up and was driving and car started driving 2nd gear and when it went to 3rd gear it like pushed me hard to my seat like a thumb sound. I didn’t think of it much thinking so kept driving and then it went to 4th gear and so I pulled over and put in park and just let it warm up more; after 15 minutes I started heading back home and once I got near home; the chime went off and the car literally skipped from 2nd gear to 3rd, 4th, 5th, 6th really quick and the car went automatically to park and then the car stopped; I tried going in drive, reverse or even neutral and just kept going to park after it stopped it leaked transmission oil about half a regular size water bottle of oil; I got it towed to my house and now trying to deal what’s going on. It has 80,000 miles I bought from a previous buyer I’m not sure if he ever did transmission flush and so if anyone can help will appreciate it.
Friday, January 24th, 2025 AT 9:33 PM

2 Replies

Tiny
YOOOOO
  • MEMBER
  • 2 POSTS
On my 16 340i AWD.
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Friday, January 24th, 2025 AT 9:36 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 49,535 POSTS
That is not good, can you tell where the fluid is coming from, is it the vent tube? If so, the fluid has foamed which a service might fix, the fluid in these cars is special and when it goes bad the transmission will slip and overheat the fluid which will make it come out of the vent. But we need to know where the fluid is coming from. Can you get under the car with a flashlight, and see?
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Saturday, January 25th, 2025 AT 4:33 PM

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