I know there are others threads on ac but none I have found have been the same as my issue. So my air conditioning system has been fully tested and pressure is correct, compressor engages, fans turn on and the AC blows ice cold, and relays are good. But randomly the AC just goes warm, the fans shut off. Everything works fine but then the whole system shuts off and will turn on randomly. The only thing I have been able to pin point is it usually works at night or on cool days. So I'm thinking maybe it's something with a wire or control board the works but loses connection when warm or hot. Any thoughts or opinions would be great. My vehicle is an 05 ml350