I didn't know that the 2012 had auto folding mirrors but I don't have a 2012. Did it work before? If it did you should start by checking the settings in your vehicle display. The function is probably turned off.
05 FX35, Silverstone, Graphite, Touring, Escutcheon, Sport Pedals, LED Dtrl's(thanks rookie), Stillen STB, +2 Timing, Stillen CAI, LMS Z-Tube, Grrrowwl!!, Plenum is next (OK - well - actually the G35 E-brake pedal is next, but I swear, something is going to happen with that plenum).