I have a 2010 Prius III and was pleasantly surprised to find out that the side mirrors defrosted when the rear defroster was turned on. I looked in the owners manual and it said if equipped. Which Prius models do not have these defrosters, the package II? My mirrors do not have the little defroster icon, but I'm almost positive it must have them.
The II (now 2) through V (now 5) have the color-keyed heated power outside mirrors with folding feature standard.
After finding that our new 2011 Model 5 had that, I checked our older 2007 (Pkg 6) and found that it had it too!!! (Checked by trying it out with snow covered mirrors and turning on the rear window defroster).:cheer2:
I was wondering how they worked. All of my other toyotas had an actual button for the mirrors to push for them to work.