Key Reminder Door System
WARNING: This page is about a different car, the 2003 Infiniti M45. However, it is still accessible from the selected car via links, so may be relevant.
However, if the electronic key is in the electronic key cylinder and one or more of the front doors are open, setting the lock & unlock switch to "LOCK" locks the doors once but then immediately unlocks them. (Combination signals from key switch, door switch)