I have an 09 DJ w/keyless entry. i have had this same issue where i turn the key and it will not start. Everything else works, radio, windows, ... i would keep trying and eventually it would start, than one day it would not start for nothing so i had to call a tow truck to pick it up. Once they took it off the truck it started right up. My son looked at it and said everytime it won't start put it NUTRAL and see if it will start. So i did and every single time it will not start i put it in NUTRAL and voila it starts. it is definately a mistery...