seems the heat now will not kick on, but sometimes does. No matter how much I screw with the controls, it will only get hot when it wants. anyone experience this? could it be the controls, or something mechanical?

 

https://www.rx8club.com/series-i-do-yourself-forum-73/diy-no-heat-repair-heater-control-158200/

 

Hold the Power + right SCAN UP button on the radio and it will display your Temp Level between 1-13....you'll probably find that it gets stuck on LOW temp (1-5) and will not get any higher. I can get mine to move, but plan on doing the DIY soon.

 

ok, so ive noticed this will be on 0 or 16, but how do I change it once it shows me the number? every button I push does nothing

 

Follow the DIY, it is a little time consuming but is a life saver. Mine did this too, but after the fix it works perfectly.