Diff fluid changes and transfer case

[diesaroo]

Originally Posted by JCL

If a fault code is reset from the fluid being out of spec (as determined by measuring slip and engagement pressure) then that has to be reset.

If the fluid is changed prior to that code being logged, then it is just the adaptations.

What has to be done additionally when the transfer case is being replaced is that the vehicle needs coding related to the classification resistor.

Here are some sources.

http://www.xoutpost.com/bmw-sav-foru...intenance.html


http://www.xoutpost.com/bmw-sav-foru...available.html


This next one is about the X3 (which uses a different version of the same transfer case, same technology)


http://www.xoutpost.com/bmw-sav-forums/x3-e83-forum/67524-ecs-tuning-xdrive-x3-oem-bmw-transfer-case-fluid-now-available.html

Thanks for the sources. But there is just one thing, assuming the VTG module must be reset to purge intself of adaptation values even if a code has not been generated to properly calibrate the operation of the TC, why is this information only shown on an X-Drive training manual? I saw nothing of the sort on the TIS and mine is a version <1year old. I was under the impression that all service data was in the TIS, or at least a direction was given in the TIS if something else was required as part of the service procedure. Killcrap? Weasel?

P.S. I understand that people employed by BMW might not want to post from the TIS, but can I get a reference # or directory? TIA