I have seen a number of posts on the regular problem where the mirror adjustment knob gets disconnected. Mine ( 2015 GranTurismo convertible) has broken loose. The electronic work but almost impossible to adjust the mirrors. The question: as there is a lot of experience with this problem. Do you need to remove the door panel to repair/replace? There is a plastic ring around the control knob and wondering if that pops off to repair replace or do you need to remove the panel.