Handles, Locks, Latches and Entry Systems: Autolock
WARNING: This page is about a different car, the 2009 Mercury Milan, 2009 Lincoln MKZ, and 2009 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
The autolock feature is not available on vehicles equipped with a manual transmission.
The autolock feature locks all the doors when all the doors are closed, the key is in the ON position, the transmission is in either a forward or reverse gear, and the vehicle speed is greater than 20 km/h (12 mph).
The autolock feature repeats when any door is opened then closed while the ignition is still in the ON position, the vehicle speed is 15 km/h (9 mph) or slower, and the vehicle then attains a speed greater than 20 km/h (12 mph).