it is summer time here in Canada but my side mirrors are very hot. I am sure it is not by sun, it is heated mirror. But the heat is just so high that my fingers cant even touch it more than 2 seconds. It this normal even in the summer time?
I read the usual manual, it said heated mirror will auto on when outside temp is low enough. Please advise..

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2006 330i Sapphire Black : Manual, Premium pack, Sport pack, PDC, Active Steering.
2005 X3 2.5i Silver : Manual, Premium pack, Activity pack, Heated steering.
1998 328i Green : Manual, Premium pack, Sport pack.