Would this be the proper place to ask about a Prestige auto alarm system.... It came w/ the van I bought used 3 years ago....since then I have found the van running with out me doing anything except having the control fob in my pocket. ???

 

I'm thinking you have a alarm/remote start system, and the buttons of the remote are inadvertently getting pushed while it's in your pocket, try carrying the remote outside your pocket buy hooking it on your belt loop for example and see if it still does it.