So everything has been going perfect on my 580-2! Yet I have one question!

My H came with that engine start stop feature , and I've never tried to put it on yet I wanted to try it out ! It's the button right next to the passenger's window button. I press the button for autostart stop, it won't do anything... I thought maybe if i switch the mode from Sport back down to strada that the feature would work but obviously not, is there a way to turn that thing on? I'd click it and it won't do anything , I know it should turn off when I'm at a stoplight to save gas!

Again.. it's a feature that I won't really use [ but it's always good to have a working optional feature ! ]

Thanks!