We have had battery drain issue for about three years. Battery drains after not driving vehicle for a couple of days and vehicle won't crank. Dealer had vehicle for a week. They removed A/M DVD wiring and put a meter on it through the night that keeps a history and said it was drawing over the limit. However, the service advisor checked with their electrical systems expert and he stated even though the draw peaked over the limit, he said over an average it was at an acceptable level. That being said, we still have the issue. We do not have the NAV system, or backup indicator. We just have the base radio. The problem is more of an issue in the winter time, but when we return from vacation during the summer, battery is always dead. I will be calling the dealer again. However, just checking if anyone has had any similar experiences. thanks! Scott