works fine on my E70.
see photos, I can change distribution from seat bottom to back and intensity. The Idrive menu comes up when you push the button on the dash to turn the heater on. push once for full heat, twice to reduce to medium setting and a third time to put on low. Then twist the Idrive knob to change the distribution. I dont think you can access this directly in the menus, it only comes up when you turn on the heater.

Attached Images

   

__________________
2013 X5 35i M Sport