I just bought a used Mazda 6i 4 door sedan 2.3 engine and the AC won't work! When I push the AC button on the dash, it does not feel like it clicks or goes in at all and it also does not light up. I took it by Big O tires and they said that it must be electrical. They then want $90 to tear into it as a start. They could by pass the switch and turn on the compressor, but they said that that might burn out the computer. SO it might just be a electrical switch. How does it come apart and is there a certain button or switch assembly that can be repaced? Zoom Zoomster here!