We bought our CMax in October 2012 and I have had FOUR electrical malfunctions that I think are related. The first one occurred while driving -- the display started flashing yellow and basically said to stop as soon as I could do so safely. After a frustrating hour trying to decode the error symbols using the owner's manual, I finally found "electrical malfunction". Towed to dealer, they said they tightened some connections and tested the battery, and sent it home. The next three times were almost identical: I'd go out to the car in the morning and try to unlock it with the key clicker, and nothing happened. Opened the car manually with the key, but there were no display lights, no dome light, absolutely nothing. On dealer's advice, had it towed (did not attempt to jump it; the third tow service said that jumping the car would clear the codes so the dealer would not be able to diagnose). One time they replaced the 12V battery, another time they advised me not to leave my USB cable plugged in (though no device was attached), and the most recent time they installed a software update (Technical Service Bulletin 13-4-13). Other than this problem, I like the car a lot, but this is obviously a deal-breaker.