Hello, After working the pen holder loose you'll find 2 Torx 25 screws. The bottom of the A/C control panel pivots out and the top edge pulls straight out. I made a small 90 degree hook out of scrap metal to pull with. Remove the 7 small phillips screws and work the back off the control panel. It's really a box. The back has holes for the 2 plugs so you don't risk unplugging the unit to do what I did. The electronics are revealed when the back half is worked off. I assume the temperature controls are optic encoders. I shot them with common electronics cleaner. More dirt came out than I ever expected. The controls are responsive now. I have no way of knowing if I was successful or merely coincidental. An unlucky few have caused their SRS light to come on by unplugging the unit. Fear not if you need to do this. Kira
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