Safety Belt 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 safety belt warning chime reminds the driver to fasten the safety belt. This occurs when the ignition switch is turned to the RUN position and the driver safety belt remains unbuckled. The chime is terminated by buckling the driver safety belt at any time during the 4-8 second chime warning.
The chime works in conjunction with the safety belt warning indicator in the instrument cluster.