My factory warranty was ending soon so I took the car in to see what I could get replaced for free. I told them that the clock was loosing time, which I guess is commonly due to a failing battery. Service adviser said the same thing and then said it can take between 3 and 16 hours to reprogram the car after the battery replacement! That sounded ridiculous. To add insult to injury, they gave me a Dodge Avenger as a loaner