Message Center Warning Chime
WARNING: This page is about a different car, the 2009 Ford Mustang. However, it is still accessible from the selected car via links, so may be relevant.
The message center warning chime accompanies any initial warning message display, as well as any repeated initial warning message. As the message center is an integral part of the instrument cluster (IC), the interaction between the message center and the chime function is also integral to the instrument cluster (IC).
The message center switch tone sounds when any switch on the message center is pressed. The message center switches are supplied with a voltage reference signal from the instrument cluster (IC). When a switch is pressed, it routes the signal through a specific resistor in the switch assembly and then to ground.