Some of you will probably find this interesting
At first glance it seems normal. You have a numbered switch to the left and the fan controls on the right. Seems simple enough. But wait what’s that under the radio? That switch controls the temperature of the air coming out of the vents. Whereas the temperature knob only controls the temperature when the fan turns off on the auto setting (and sometimes on the other settings if it’s hot/cold enough). It may seem redundant at first, but believe me it is amazing being able to fine tune the heater to just that perfect temperature and then never having to change it again.