My wife loves her 2013 King Ranch, and I understand why. But skipping the small talk, there is what appears to be the image of a padlock flashing quickly every few seconds when the car is shut down. The page in the owners manual showing symbols tells me it's indicating something regarding the child safety locks. I believe these locks were not available when our children were, well, children. Any thoughts as to how to stop it? We've locked and unlocked them on both rear doors.