If you have only put 3000 miles on in 6 months, than you obviously don't drive much. Yours may have not been working because of a low voltage issue. But as others have said, the screen will tell you if that is the case.

 

Headlights on? too much draw may cause it.

 

Thanks for the tips and thoughts all . I still can't find any screen that tells you why it is not operational. There is an auto stop start screen on the display but it only tells you really really basic info. Like engine in normal operation. Or auto start stop disabled . It doesn't tell you why - like or example your defroster is on or something like that.

It started working again this afternoon so it's entirely possible some parameter was not bein met. For example, the manual says ambient temperature, etc can cause it not to work.

Just no way of telling. I do appreciate all of the help .