Originally Posted by sylonien
You mean dipping down right and dimming when its bright?
Mine clearly doesn't dim when it's bright. Which part number have you got? Can you run it through bmwvin and check which mirror option you have or the part number for it?
I drove 470 miles the other day and pretty damn sure it wasn't dimming.
Easiest way to check, wait until its dark enough to have your lights on whistles driving. Then go out to your ca, start it up, make sure the headlights are on, then turn on your interior light, the one right in forint of the rear view mirror.
This will activate the dimming - any mirror that should dim will dim at this point.
Easy way to heck