Smart Unlocking
WARNING: This page is about a different car, the 2003 Ford Pickup, 2003 Ford F550 Super Duty, 2003 Ford F450 Super Duty, 2003 Ford Excursion, and 2003 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
The smart unlocking feature prevents the driver door from locking with the key in the ignition. When the vehicle security module receives a LOCK command from a door lock control switch, and the key is in the ignition with the driver door open, the vehicle security module will command the driver door to UNLOCK. The doors can be locked with the keys in the ignition using either the keyless entry keypad or the keyless entry remote transmitter.