OK! I got to use my heated mirrors this morning! No, it really wasn't THAT cold, but is was moist from a lot of dew...So I turned on the rear defroster which in turn turned on the heated mirrors. I was just out of my driveway and up the road, less than 1/4 mile and my mirrors were clear! They were nice little rectangles. I was not as impressed with the rear window defroster, though. It wasn't clear by the time I got to work 2.5 miles from home!