Parking Brake Engaged Chime
WARNING: This page is about a different car, the 2006 Ford Pickup, 2006 Ford F550 Super Duty, 2006 Ford F450 Super Duty, and 2006 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
The parking brake engaged chime reminds the driver that the parking brake is engaged by intermittently sounding a chime and illuminating the brake warning indicator in the instrument cluster once the vehicle speed has exceeded 4 km/h (3 mph).