I just picked up my 2018 Guilia today and as I was returning home, I noticed an icon on the center screen. When I returned home, I opened the manual to identify the icon. The icon was the start/stop function is disabled. Not a good start. I read the thread and responses and many folks who have this problem are happy because they dont have to deal with this annoyance. I think I know what caused this. When I was at the dealer I opened the hood. When I closed it, it may not have seated properly, so tomorrow I will determine if that is the root cause.