@Jmin When describing a problem it's best to be as descriptive as possible about what you're doing, what you expect the result to be, and what you observe the actual result to be. The large knob that is used to control the infotainment system has several actions, none of which I would describe as a toggle.
push down
move left
move right
move up
move down
rotate
If what you refer to as "toggle" means pushing the button down then there could be some debris that is preventing the button from traveling downward. Do you feel the button moving downward when you push on it? If so then the problem could be with the switch. Does the button exhibit this behavior for everything on the entertainment system? Or just for certain things?