I'm having a similar issue, but I doubt its my battery. The symptom is: Intermittently, regardless whether the car is warm or cold, my car would not start on the first turn key, but the warning lights and the gauge would light up, but the car just simply would not start. So I would turn the key to the off position and the car started right up on the second try. Would anyone know what the cause of this? I had previously asked the dealer. They told me it could possibly be the key, or the transponder, or the DMS issue. Anyone want to take a guess?