Quote:
Originally Posted by TTG
Heated mirrors are not going to do anything for rain. They are there to prevent frost and or ice. That's it. They will still get wet just like your rear window.
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I understand they will still get wet but I've owned a G37 and GS350 and yea they only turn on when the rear defroster is on but you can tell they're on because the water drops eventually dry up. I have yet to see the side mirrors on my 5 series dry up. Water drops stay there for a long time and I did eventually see them dry up but not for a long while. Rain finally stops today here in So Cal but I'll have to check it out next time it rains again.