Thanks for the info, guys. I assumed it was something like that because it had not gotten that cold 'til now. Unseasonable, record breaking cold in my part ot AZ this week. The first time I checked the air in the tires it was at 45psi! I took them all down to 36, but with the cold they all fell to 33-34 which is understandable. Now that the cold weather has subsided I will put them all at 36 and go for a drive. I'm sure that the light will go off.
I appreciate the answers! It's what makes this forum great.
AZ Roadster