2005 got a few days ago ran fine parked in the yard it shut off by itself now no start not even crank and the security is on. No power to anything fan windows ect??

 

I would first start by checking the battery. Have you ran a tester on it?

A couple of years ago mine did the same. Fine in the morning, but deader than dead in the afternoon. Nothing would work. Found that two of the six cells were shorted. Replaced battery and all was back to normal.