I've found that with every motor vehicle I've owned in my life, and used during the winter in Nebraska, when it gets really really really cold--and compaqxp's up where it's even colder than Nebraska--small things have a tendency to go berserk.....including all those little warning lights on the dashboard. Then when it warms up again, the little warning lights don't come on, or whatever else is bothering the automobile.
I'll bet the extreme cold is a factor here.