Thanks for everyone posting their findings here, it's really useful to follow.
Just checking on some earlier reading I did that said I don't need to update my DSC if I already have cruise with braking function. Above it's been suggested that you do need to change the unit, but I'm not sure that is always true, just to complicate things. I'm not saying anyone is wrong as I've still not tried (waiting on my sensor), just sharing what I found.
This post is worth a read.
https://www.xbimmers.com/forums/show....php?t=1122966
Also if I check parts here, it shows a different hydro unit for the ACC with stop go function (34516865026), but based on the lack of other options listed, it leads me to believe that all other versions of the car have the same hydro unit regardless of if they have cruise, cruise with braking or acc (34516865025)
https://www.realoem.com/bmw/enUS/sho...diagId=34_1601