winter - side mirror
 

I'm actually quite surprised the side mirrors don't have heating options. It sure would have came in handy in some recent snow storms.

mine are heated, a part of cold package.

The E70 comes with heated mirrors standard (at least in the US).:dunno: Refer to page 52 of your manual. They come on automatically below a certain temperature.

Heated outside mirrors come on automatically below certain temperature thresholds. I think below 10°C they are on full, below 15° partial.

On the e39's the heated mirrors, washer nozzles, & door lock came on @ 45degrees F.