He lives...haha. Thinking about coming to Raleigh on Saturday morning (19th) for Cars and Coffee and might be a couple other Fiats around in case you're free Dave.I thought I'd check in. I'm having the same problem. It is very intermittent and sometimes lasts a few hours to a few days. I never have the time to take it in when it is happening though. Renee is having the same problems with hers. They are clueless. She even called FIAT customer service and they claimed ignorance of the problem.
Good luck with the TPMS, luckily no issues on the former or current ride in that area.