this will unlock everything when you press the unlock button once on your remote instead of having to press unlock a second time.

sit in car, door closed, key in hand
press and hold both the lock and unlock button on the remote for 5 seconds (the red LED on the remote will flash). you will need to do this on each key.

no longer will you be walking to the car with the girl and hit the unlock button and your door is open and her's is still locked

good luck, have fun and happy holidays to everyone!