Today I took my almost 4 week old 2013 Fusion Hybrid to the dealer. Kept getting Battery Saver messages when shutting down the car. Also, could not run the radio in accessory mode with out being told to turn off power to save the battery. Took to the dealer and told them the 12 volt was bad. They said the symptoms were normal. I know this was not true since they were similar symptoms to what my wife had in her 2012 C-Max. In its first month it had been jump started 3 times. Spent a week in the dealer for a new module that controlled the brakes. Did not fix problem. On third trip they checked the battery and it fail all tests. Was replaced and all seems fine. Today they check and found my 12 volt failed the tests and that the computer reported a spike to the radio system. They replaced the battery and I go in the 22nd to see the "radio man" who comes in twice a week. Apparently he goes around to several Ford dealers.
The battery problem apparently is fairly common. The Sales Manager said he would make them replace the battery regardless of their findings. Real cooperative and apparently is aware of the issue. The C-Max forum reports quite a few battery problems. See http://fordcmaxhybri...e-tsbs-recalls/