[sibhusz06]

Just changed my transfer case fluid, thought Id pass along the abbreviated steps in case anyone tackles this. Took me about 2 hours but I took my time and im sure next time will be about an hour.

1. Jackup/use ramps to get all 4 wheels off the ground. Remove the main belly under tray, about 15 8mm screws and 2 10mm nuts(optional- I think only needed if your doing front diff).
2. Remove transmission cover felt (5 8mm screws).
3. Remove driver side under tray. About 12 8mm screws and 4 10mm nuts.
4. Use a jack with a 1x6x6 piece of wood and line up under the transfer case, to hold the back of the tranny.
5. Remove the 18mm nut from the bushing bolt at the top of the tranny brace. This is a long 6 inch bolt and you'll need a 17mm or 18mm socket for the other side.
6. Remove the 3 13mm screws on the passenger side of the brace, and then two 16mm screws from the drivers side. Brace will slide out.
7. Now you have a clear shot with a 14mm hex wrench (bought one from amazon) and remove the fill/drain plug.
8. Insert a mity vac or suction device into the transfer case and I was able to extract 0.5quarts. Measure this amount.
9. Use a fluid pump and pump in BMW DTF1 75w. I pumped in 0.6quarts. Clean the fill plug and tighten back in place.
10. Reverse steps to reinstall everything back in place.
11. So the consensus is to reset the VTG transfer case, if you have the tool. My Nt410 doesn't do this but am not sure if I will go through with it....