Finally got around to removing the knob and trim piece. Had to use a putty knife and screw driver as the trim removal tool was not strong enough to pry it up and out. Took out the controller and took it apart. Sprayed electrical contact cleaner inside the remaining part of the controller and put everything back together. No luck. In fact now I don't have any control with the idrive knob and the climate control screen is on all the time. I guess I'll have to buy a new module now. Does anyone know if that will have to be programed or is it just a swap out replacement?