I still have it but lots if interest so not sure how much longer.
Heated button is on the right side of the steering column. Assuming you have the option. When you press it it turns orange and wheel gets toasty ;-)
2011 E92 335xi,
Cobb ProTune, Cobb FMIC, Catless DP, BMW Performance Exhaust, aFe stage 2 intake, BMS Chargepipe, Alpina B3 - BUT NOT ENOUGH POWER!