So the cruise control has started going wonky on my 08 F250. Every once in a while, when I turn it on and try to set it, it simply doesn't do anything, as if it were off. If I shut the engine off and restart, 9 times out of 10 I have cruise control again. Apparently there is no fuse for it on F250s, and if there were, I would expect it either would work all the time or not work all the time if the fuse was bad. It's supposedly controlled by the Powertrain Control Module.
I'm wondering if something like this, that's computer controlled, fails intermittently, if there is some fix via the diagnostic hookup at the shop, or even if it's something minor like this, if I would be stuck buying a brand new brain? I wouldn't mind spending a couple hundred to get it fixed since I use it a lot, but if it's a $1000 fix, I'd rather just live with it.