Has anyones key fob stopped working on its own? I have a 2007 limited with 2 factory key fobs. When we bought the jeep a little over 6 months ago, both keys worked for locking and unlocking the jeep. I'm not sure exactly when it began, but now one key doesn't work. It will start the jeep, but won't control the locks. I've changed the battery, but it didn't help. The key hasn't been dropped or submerged or anything like that.