I too fear the electronic parking brake. My approach is to just never used it.
Can't fail if you don't use it right? Right?
Thank you for the good wishes. I got a ways to go. Your approach is also mine. It worked, so far, on the '13 for nearly three years so far. So I was a little ticked when I started one day and was greeted by the red light and warning. It goes away and pops up at will. I cannot work out why the brake controller for the '15 is $1100 and the '13 can be found for under $300. How much real difference can there be? That is except for every change BMW made to make sure one would not fit the other!