My friends car has been lacking A/C for a minute now and two different mechanics have told her something electrical has gone haywire. One of them said it needed to be reprogrammed because the compressor isn't getting a signal from the body computer, or they could install a "switch" so it'll blow cold. Seems very sketchy to me. I told her not to bring it back to that shop. I'm mostly handy when figuring out mechanical issues but A/C system is kind of out of my league. Any advice is appreciated.