How can I prevent the AC switch from automatically turning on when I turn on the heater in the Elantra Elite version?

After turning off the AC, the next time you turn it on by pressing the fan speed button, it will only start the heater without activating the AC.

That's right, AC doesn't just mean cold air. From what I know, it mainly helps balance the humidity inside the car to prevent the windows from fogging up. It will turn off by itself after running for a while. If you have automatic climate control, just set it to auto and you don't have to worry about it much.

Just don't put it in the glassblowing gear and you'll be fine.

Does the heater automatically turn on the AC? What's going on? Can you record a video and show us?