I have a 2008 F350 with intermittent cruise control function. Occasionally when I turn on cruise and hit set, it does not come on no matter how many times I push on and set . Much of the time I can shut my truck down and restart and cruise will work, but not always. Once it is working - I can turn off cruise and restart it and it always works. If I turn my truck off there is a chance the cruise will not start. Anyone have a similar problem?