N63 Transmission, TC, and Diff Fluid change

[Sophisticated Redneck]

Originally Posted by blackhatal

Hello everybody,

I have a 2012 X5 50i that's close to 100K miles and has never had the transmission, transfer case, and differential fluids changed. I've searched for some DIY's but all of them seem to be for the 35d or 35i models. I know the diesel used the 6HP transmission and the 35i has the 8HP, but is it the same version of 8HP (mechanically) as the one in the 50i? Are there any substantial differences in parts or labor between these? A local indy that specializes in BMWs quoted me $400 for TC fluid change and adaption and close to $1000 for transmission fluid change. He also said diff fluid changes are not necessary...
So I'm thinking I could DIY this.

I have done it a few times on my 2012 50i, (144,000 miles) it can be super easy or a real pain in the ass, it all depends on what tools you have. Do it with just a ratchet, car jacks, and one of those cheap hand pumps and it sucks. Buy yourself four car ramps, proper transmission filling pump, and electric ratchet and its super easy. You can get away without resetting the adaptations but it is reccomended and for that you will need a proper scanner with BMW software like the Foxwell 510 or the bimmergeeks ProTool app and OB2 adapter. You will spend around 280 dollars for the pan/filter & oil kit. If you want to do it right, add another 300 dollars in tools that will serve you well for many years to come if you dont have car ramps, electric ratchet, tranny fill pump, torque wrench, etc. You will use these same tools for the CT and diffs. All in all you can do Everything (Transmission, both Diffs, and CT for around 700 dollars including all tools, oils, parts. If you are serious about doing it yourself respond back and I will break it down for ya