Originally Posted by foxy-stoat
What does the volt meter say in the hidden menu while driving, number 9 I think?
Would be a clue to see if its charging as it should or if the battery is failing.
Volt meter in hidden menu? Don't think I have that option on my F12 640i and, before you ask what I'm doing here on the 3 series forum
, I find I get far more technical response from my fellow Brits on E90 Post - not so many of us over on the 6'er forum