Normal Operation
WARNING: This page is about a different car, the 2005 Ford Pickup. However, it is still accessible from the selected car via links, so may be relevant.
The headlamps on warning chime sounds when the driver door is opened, the ignition switch is in the OFF position or the key is out, and the instrument cluster detects that the instrument cluster illumination lamps are on. The headlamp on reminder chime is only operative when autolamp is not selected.