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My AC control panal is flakey...it sometimes takes a push of several buttons to get it to kick on the AC...but- if I leave it say to auto and shut off the car...then back on...it turns right on??? could it be the controller itself? are they expensive? The AC blows Ice cold! and all of the buttons switch as they should (once it gets going)
You have one or more cracked solder joints in the AC control head. You need to remove it and inspect the solder joints on the circuit board and resolder the ones found defective.