Key-in-Ignition Warning
WARNING: This page is about a different car, the 2005 Ford RV Cutaway, 2005 Ford Econoline, 2005 Ford E450 Super Duty, and 2005 Ford Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
The key-in-ignition warning chime sounds continuously when the ignition key is in the ignition lock cylinder with the key OFF and the driver door open. The chime continues to sound until the key is removed from the ignition lock cylinder or the driver door is closed.