1St jumping back into neutral HELP!!!

[GOFAST GUY]

Yesterday was the big day!! My transmission had been really acting up and I couldn't wait for the work day to be over so my buddy and I could tackle this project. I got to his place and we quickly pulled the plug to drain the oil while letting everything cool down.
Working together, we loosened the 20+ screws holding the oil pan on. We left one at the oil plug side and two at the opposite side of the pan on the end so we could slowly lower the oil pan while still draining it until there wasn't much left to drain. After pulling the pan off, we were glad to see there wasn't any hard particles stuck to the magnets as we worked at washing them off. The filter was completely plugged and definitely due to be changed out. I couldn't get over how expensive new transmission oil is for BMWs but everyone I talked to told me to buy the stuff specific for the brand of vehicle so I did reluctantly.
We used gasket spray to hold the gasket in place, which worked awesome!! And before long we had the new filter back in place along with the oil pan and all the bolts in and we were filling up the oil pan. My buddy has a drill pump which worked AWESOME attached to his cordless drill. I strongly recommend buying one. We sucked up 3L super quick, ran the vehicle for a bit and then added the fourth and that was pretty much it.
I took it for a drive and even though it jumped out of gear a twice out of the 15 or so times I started off in 1st, it made a huge difference!! Today on the way to work, it only jumped back into nuetral once so I'm pretty happy over all. I still have 3L of new oil left so I'll probably drain some oil out in a couple thousand KMs and top it back up with new stuff again just to keep cleaning out the oil a bit more.

If anyone else has any other suggestions, I'd be open to hearing them. I was looking at the Dinan transmission upgade software thinking maybe with it getting reprogrammed, it might help it decide which gear it's suppose to be in but feedback would be helpful. Thanks for all of the advice from the guys on the forum. I feel a TON better then before.

Cheers

[Turbo_Bimmer]

Originally Posted by GOFAST GUY

Yesterday was the big day!! My transmission had been really acting up and I couldn't wait for the work day to be over so my buddy and I could tackle this project. I got to his place and we quickly pulled the plug to drain the oil while letting everything cool down.
Working together, we loosened the 20+ screws holding the oil pan on. We left one at the oil plug side and two at the opposite side of the pan on the end so we could slowly lower the oil pan while still draining it until there wasn't much left to drain. After pulling the pan off, we were glad to see there wasn't any hard particles stuck to the magnets as we worked at washing them off. The filter was completely plugged and definitely due to be changed out. I couldn't get over how expensive new transmission oil is for BMWs but everyone I talked to told me to buy the stuff specific for the brand of vehicle so I did reluctantly.
We used gasket spray to hold the gasket in place, which worked awesome!! And before long we had the new filter back in place along with the oil pan and all the bolts in and we were filling up the oil pan. My buddy has a drill pump which worked AWESOME attached to his cordless drill. I strongly recommend buying one. We sucked up 3L super quick, ran the vehicle for a bit and then added the fourth and that was pretty much it.
I took it for a drive and even though it jumped out of gear a twice out of the 15 or so times I started off in 1st, it made a huge difference!! Today on the way to work, it only jumped back into nuetral once so I'm pretty happy over all. I still have 3L of new oil left so I'll probably drain some oil out in a couple thousand KMs and top it back up with new stuff again just to keep cleaning out the oil a bit more.

If anyone else has any other suggestions, I'd be open to hearing them. I was looking at the Dinan transmission upgade software thinking maybe with it getting reprogrammed, it might help it decide which gear it's suppose to be in but feedback would be helpful. Thanks for all of the advice from the guys on the forum. I feel a TON better then before.

Cheers

I would suggest to do 2 more oil changes. One oil change like you did only replaces half of the oil. After 3 oil changes, I think you get like 92% new fluid in there.
Also, no need to drive thousands of km before another change. One week or 500km is enough to mix everything and condition the internals with the new fluid.

[GOFAST GUY]

Update. Yesterday was a warm day and I was doing quite of bit of driving through the city. While the transmission was still cold, everything worked well!!! I was very happy. Once it warmed up, I was right back to square one with it eventually kicking into trans safe mode which really sucked!!!
I'm thinking it's got to be electrical but I'm open to suggestions. Even when it popped back into neutral or between gears, it did it smoother then before which was relieving but I've GOT to figure this out soon because it sucks trying to get through an intersection when it keeps jumping out of gear or you're taking off in 5th while in safe mode.

I had done three oil changes which really showed when I pulled the pan and saw how clean it really was.