Well the worst has happened, I have a 2006 Lexus GS300 and my key fob was running low on battery (as dash indicated) and I replaced it. On a daily routine I leave my key fob in the car as I park my car in the garage and I like to drive comfortably, now the door AUTOMATICALLY locks by itself once exiting (regardless if the key inside the car). Never use to have this issue, left my key fob inside car and doors never locked. Has my key fob been reprogrammed? Any help will be appreciated.