Headlamps On 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 headlamps on warning chime sounds continuously when the headlamp switch is in the PARK or HEAD position, the driver door is open, and the key is not in the ignition lock cylinder.
The chime continues to sound until the headlamp switch is turned OFF or the driver door is closed.