My 2005 F250 King Ranch, 4wd, 4 door heat and air system has quit. It occasionally has quit before but always came back on after a few stops and restarts. It has gone off now and does not seem to be going to start back up. What happens is it is working fine when I stop and shut the truck off, then the next time I get in and start it the heat and air does not come on. I checked with the Ford garage and they said the trucks computer will probably have to be replaced as that was a problem with the King Ranch. Anyone have any other ideas?? Thanks, Jim