Stephen04E55

Anyone have a fix for this message? I resynched everything from the steering wheel to the head rests with no help. This all started after my 3 yr old pressed the panic button and killed the battery. Battery was 7 years old so I replaced it and have this message now. Also, car will start flashing lights after the doors are locked with the key fob. Pressing the unlock on the key fob stops the flashing but it starts again if the door lock on key fob is pressed again. Funny thing is that if the doors are unlocked it stops and the panic button still works. Any input will be greatly appreciated. Yes, my 2003 S600.