I got my wonderful FFE back day before yesterday after 42 days at the dealer. they paid for car rental and gas. I have confidence it is fixed, because, as I said before, they wiggled a cable to a module, found it making intermittent connection and replaced the cable. After that replacement, they were not able to get the error again. I am confident that it is fixed, though I am mindful that the SSN message could have different causes, and that as someone said shortly ago, the car may shut down too abruptly because of a software urge to do so. Time will tell.
After you have driven this car, and are stuck with a Korean automatic shift rental for a while, and then go back to the FFE you truly appreciate the Electric's smooth ride and amenities.
2013 mist green FFE