Originally Posted by jphughan
I'd be careful with this; I believe the 2011.5 M3s have a different (larger) starter and alternator for the increased duty cycle that auto start/stop entails. You might end up with some unhappy customers if you enable that feature and their cars die early in a way that isn't covered by BMW....
Interesting - didn't know that. Still worth finding out how the coding works to give cars equipped with it the option to remember. In most countries out side of the US, the start stop function is automatically enabled when you start the car. Most of those people want it disabled