So I'm having a transmission problem with my 2012 Fiesta. Sometimes (not always) after I've just turned the car on and have only been driving for a few minutes, the transmission will shift itself into neutral. If I shift it into park, the transmission will shift into park while the N for neutral will remain on my dash. The shifter will then be locked into park and cannot be moved. If I use the transmission lock release switch (sorry, not sure of exact terminology), the shifter will be able to be moved but the transmission will remain locked in park with N still on the dash. Once I disconnect the battery and reconnect it, it runs perfectly fine again. There's been no check engine light anytime it's happened. I haven't used a code reader on it either. My best guess is either a failing battery, alternator or transmission control module. Any help here would be greatly appreciated!