The key is stuck in my 2006 Explorer and the only way to get it out is to disconnect the battery. It will turn all the way back to the position where it should release, but it doesn't. I've tried moving the shift handle while pulling on the key, but that doesn't help either. It will start and run just fine, and the key fob is the only way to lock it while leaving the key in the ignition. Could this be a blown fuse?