N63 Transmission, TC, and Diff Fluid change

[Sophisticated Redneck]

Originally Posted by blackhatal

Thanks for the info! I found a transmission fluid change kit with all the parts on turnermotorsports for $289 and free shipping. Called a different indy and they said they could do transmission service and tc flush for 1 hour labor each, which is much better than the first place I called. I am sure I could have done this myself but don't have access to my old garage and tools while I live in Chicago downtown for the next year.

The car started developing a slight shudder on mild throttle in full lock turns. No errors or warning lights (haven't scanned it though). There seems to be some disagreement in the community over whether that means the tc needs to be replaced or whether a fluid change can save it. I am keeping my fingers crossed that in my case it'll be the latter.

I'll take the car in for the service next Wednesday and report back with the findings here. I know many others have posted about doing this but I think more data points will be useful.

Could also be the plastic gear in the TC that always fails, not to bad to replace. It wont trigger OB2 codes but it will trigger BMW specific codes that readers like the Foxwell 510 and 520 can pickup with the BMW software loaded or the Protools app & adapter.

Make sure they reset your adaptations in both your tranny and TC. Put them on the spot and ask if they know the re-learn procedure for the ZF8HP transmission. (its pretty easy, 25% throttle let transmission shift through all gears, then coast down through all gears, repeat min 6 times, then repeat in manual mode 6 times. You need a long stretch of road with little traffic to do right. It will relearn if you dont have that type of road but will take longer.

[blackhatal]

Originally Posted by Sophisticated Redneck

Could also be the plastic gear in the TC that always fails, not to bad to replace. It wont trigger OB2 codes but it will trigger BMW specific codes that readers like the Foxwell 510 and 520 can pickup with the BMW software loaded or the Protools app & adapter.

Make sure they reset your adaptations in both your tranny and TC. Put them on the spot and ask if they know the re-learn procedure for the ZF8HP transmission. (its pretty easy, 25% throttle let transmission shift through all gears, then coast down through all gears, repeat min 6 times, then repeat in manual mode 6 times. You need a long stretch of road with little traffic to do right. It will relearn if you dont have that type of road but will take longer.

Thanks for the tips! Didn't know about that procedure for the transmission. Thought it was all done through the computer.

How much oil does the TC take? I bought one qt of this BMW TC oil. Hope that'll be enough. Taking the car to the shop on Wednesday. Will let you know how it goes.