My problem of the suddenly not starting problem on my 2012 RT SM5 was fixed today by my dealer---I hope. They plugged into the buds system and found that the ignition switch was stuck in the open position. They unhooked the switch, checked, reinstalled switch. Still didnt start so they checked fuses and found that the fuel pump switch was blown. Changed the fuse and now everything works fine. I asked them what could have caused this and they didnt know. I always get nervous when Techs cannot give me a definitive cause. Right now Spyder is running fine and towing & bill is covered under warranty. I just hope this doesnt happen when we are miles from home! Thanks to everyone for there help !!