I noticed that my heater only works on setting 4, which is the maximum setting. No heat, or even cool air, from any other setting. Everything else seems to be working fine. It's a 2002 Jeep Liberty. Is it ok if I don't fix it and just run it off the highest setting?
My grandma is giving my mother this car but I don't know what model its because I'm not sure what "AT" stands for. Links are appreciated, thanks so much!