Problem Reports

I had the same issue where jiggling the knob was the only way to change the temperature. The solution isn't really difficult. It'll take about an hour and a half. You have to remove the radio/climate control faceplate, then disconnect and remove the climate control unit. Disassemble it all the way down to the circuit board. There, the temp control knob will have 3 pins that go all the way through the board. If you look at the back side of the pins you'll notice: 1) There isn't much solder on it, 2) The solder is cracked. Just add more solder to the pins. I used Rosin based. Reassemble and test. Worked like a charm for me. Even if you've never done anything like this before, give it a try. You'd be surprised how easy it is.

climate control heat not holding setting. Cd player skips

Hot air with air conditioning, cold air with heat. Wiggle knob and rotate to get correct temp. It sometimes takes a while to get the temp I am asking for.

Of course, I bought this car used. It was summer so I tested the AC which seemed to work. The same week I noticed the heat was possessed. It is either super hot, or super cold. There is no in between. It seems to decide when and where it wants to get hot, or to get cold. Usually I can rotate the knob back and forth to fix this. With all these reports, I would think this is a faulty design or manufacturing. I assume there is a recall for this? If not I may just contact a lawyer and see about starting a class action suit. Oh, and today the airbag light literally just came on out of no where.

Hey all, found a do-it-yourself guide to fix this problem. I plan on doing it, then sending Mazda a bill for the labor at standard shop rates. :-)
http://www.rx8club.com/do-yourself-forum-73/diy-no-heat-repair-heater-control-158200/

I had the same issue where jiggling the knob was the only way to change the temperature. The solution isn't really difficult. It'll take about an hour and a half. You have to remove the radio/climate control faceplate, then disconnect and remove the climate control unit. Disassemble it all the way down to the circuit board. There, the temp control knob will have 3 pins that go all the way through the board. If you look at the back side of the pins you'll notice: 1) There isn't much solder on it, 2) The solder is cracked. Just add more solder to the pins. I used Rosin based. Reassemble and test. Worked like a charm for me. Even if you've never done anything like this before, give it a try. You'd be surprised how easy it is.