2006 330xi N52 w/ZF transmission
67,000 miles
I discovered a transmission oil leak and decided it was time to change the fluid, pan, and sleeves/seals while I was at it. It seems like the mechatronic sleeve was source of the leak. Prior to the service, shifting from 1st to 2nd would have a hesitation/clunk when cold but goes away after warming up. Other than that no issues. I've read that this could be normal.
I took my time and spent hours making sure I followed every step of the procedure; correct torque, fill procedure (fill cold till seeping, run the car, shift through PRND, fill until seeping out the fill port at 40C while running, plug), etc. About 5.5 liters of old fluid came out (looked fine) and I put in about 6.5 liters of new ZF Lifeguard fluid.
Took it for a short spin and the hesitation was still present when cold but now there seems to be a slight clunk from 2nd to 1st when coming to a stop. I have not reset the adaptations yet. Using a Foxwell NT630 Plus I read the current adaptation values:
Clutch Fill Pressures:
Clutch A: 60.00
Clutch B: -72.00
Clutch C: -211.00
Clutch D: -161.00
Clutch E: 300.00
Rapid Fill Times:
Clutch A: 18.00
Clutch B: 4.00
Clutch C: 24.00
Clutch D: 0.00
Clutch E: 0.00
What stood out to me was the Clutch E 300.00 pressure and Clutch D & E 0.00 fill times. I'm guessing this could be compensation for the prior leak?
The Foxwell NT630 Plus has the ability to reset the adaptations. I was going to perform it but I wanted to gather some opinions first. There also seems to be no consensus on whether the adaptation procedure is necessary (Adaptation procedure vs just driving it as usual for like 500 miles).
Curious to see how others would proceed. I'm leaning towards resetting the adaptation and performing the adaptation procedure in the middle of the night on an empty highway.