I puchased my 2013 C Max in December 2012. I took it on a trip up the CA coast...thrilling right? At a camp ground in Big Sur was the 1st of 7 or 8 dead battery episodes. LONG story short...the fix finally was some sort of module harness connection getting wet and shorting out. That was back in August 2014.They somehow waterproofed the connection I suppose. Since then..no dead battery episode.