Charliedog that's great to hear! My 2014 is also at the dealership waiting for a replacement battery pack which should arrive next week. They only approved having it replaced after the 5th time that it was towed to the dealer over the past 16 months. I've posted most of the history in Carbuff's thread since he was going through a similar ordeal during the whole of last year: viewtopic.php?f=14&t=4200&start=200
I don't even know whether a coolant leak is to blame in my case. I only ever saw SSN errors (which always left the car inoperable) after driving in rain, so I was sure the problem was water getting into the battery through the lower driver's side HV battery connection. However the diagnosis which finally resulted in the OK for a replacement from Ford, was that they noticed a large drop in voltage output from the battery after it was warmed up from driving it for awhile. I assume the conclusion was that several cells must be damaged, but they haven't said anything about what may have been the cause.