Went to get in my 2012 srt. Dash showed key for battery low. Replace battery. Ran inside and grabbed other key fob. Getting back in this time it showed key fob not detected. Showing off to my wife, I removed start button and used the key fob as a key. We drove to dinner and I reminded my wife to lock the doors. Lol. Mistake. Coming back with a full belly I pressed the unlock button. Nothing. Nada. I laugh and say we are locked out. We google what battery we need and start trekking over to Target. I never read the owners manual so I don't realize the is a key hidden inside the fob. I find it in the store and laugh at my lack of knowledge. I really need to read that manual. Be the way I think the original battery went 7 years!