[akraptor]

Been pressing that button on the left side of the gear shifter all these years. One month ago, I started experiencing the following. . Cannot switch from D to S or M. I press that side button, but the knob doesn't want to move to the left. I hear the same click sound but the knob doesn't move. Is this a minor issue, some clamp inside the knob that came loose?! I am out of warranty so please give me a hint before I go to the BMW official service shop.

Thanks,