I drove my exepeditoon today for the first time and my handwarmers are stuck on high. I can adjust the thumb warmers up and down but can't seem to turn down handwarmers. And even when the icon on the LCD screen is not on it still puts out heat. This is my first time driving it, it has 80 miles and out of warranty I believe. Because it's my first time I am wondering if I am missing something but can figure out how to adjust thumb, so assume I am doing it correctly. Any ideas what is wrong?

If its the same as ATV hand warmers there is a porcilian resister built in that makes the low hand warms work. That might be bad, or maybe the switch is bad and not working.