We're having a charging issue. The charge settings on our 2017 FFE seem to be stuck on "unlock." When we start the car and shut it down, we get a "Unlocking charge cord" message. As a result, the car doesn't seem to start charging immediately when we plug it in (even though it's on the "Charge Now" setting). For now, we're attempting to get around this by plugging in, hitting the unlock charge cord button by the stick shift, removing the plug and then re-inserting it. This seems to be working so far, but obviously we shouldn't have to do this. Is there something we can do to fix it, or is it a job for the dealer? Someone suggested temporarily disconnecting the 12V battery to reset settings, but I'm not sure how to do this. Could it be a sign that the 12V battery needs to be replaced? Thanks very much!