I never thought that I would say this but, I miss the air con for demisting the car. Working fine, then - nothing. The condition of the bottle is showing "yellow" indicating that it is saturated. Would this prevent the compressor from operating? Normally I can both hear the compressor and see on the tachometer at idle when it kicks in. Outside temp when tried was 11C. How much to have this saturated bottle changed or can it be "unsaturated" in situ. (Guess that's pie in the sky) Any suggestions .Can I narrow potential fault down a little - car is 405 second build Appreciate any help