usually that dial is just broken and it can be replaced. the temperature knob can be purchased at the honda dealer for about $10. the knob just pulls off. usually you have to remove the clip that is left behind when you remove the knob; it just pulls off as well. the new knob lines up and presses on.if its not the knob then its the cable and that gets to be more expensive. My bet is that it is just the knob as that is a very common failurehope that helps