At around 600 miles, the odometer randomly started blinking. About the same time the blue tooth phone system started acting strange and the transmission was shifting a little rough, but nothing serious.

I called the dealership and they said they had seen this before, you just have to reset the computer system, takes about 5 minutes to do.

Before I could bring the car in for service, it stopped on its own. It did this about 3 times in January - February (very cold weather) and hasn't done it since.

I'm inclined to think the Fiat just doesn't like the bitter cold weather, but who knows. It wasn't a major issue, just slightly annoying.