Here was some recent work on my wifes Steptronic transmission. The BMW manual states "lifetime" on the fluid. Shell states 60K miles so it was time.
Much easier now that I own a Ranger BL-5000XL lift. Gives me about 21" of clearance in about 3 minutes of setting up
Here was the fluid and metal shavings found in the old pan (The fluid smelled horrid- like dead fish)
Where all the magic happens. Thats a lot of solenoids
The filter (built into the pan- the whole thing gets replaced) continued to weep out fluid after four times dumping the excess- I think its was getting pretty clogged- Good things its been changed
Id say even with jack stands and Ramps (car must be level) its not too difficult. Filling the transmission case is tricky- you need to have someone literally running through the gears manually (paddle shift) while the tires are spinning so the fluid can be pushed back into all the areas- Took about 5.75 liters which is just about right. Note the round magnets- Those patterns you see are the magnetic field affecting how the metal deposits- they were smooth when cleaned off. Its typical for a transmission with 60K on it though.
Car runs great now. I also did a coolant flush at the same time. The money saved doing it myself allowed me to buy a scanning tool made for BMWs for diagnostic work, resetting all those reminders on the brakes, filters and fluids as well as resetting the battery sync. Also got a trick vacuum system to place the coolant system into a total vacuum and pull the new fluid in without bringing air into the system
Car continues to impress and my wife loves it.