Normal Operation
WARNING: This page is about a different car, the 2004 Mercury Mountaineer and 2004 Ford Explorer. However, it is still accessible from the selected car via links, so may be relevant.
The warning chime is an integral part of the instrument cluster. The instrument cluster sounds the warning chimes after receiving hardwired and data signal inputs from the vehicle security module and the RCM. Data input signals are transmitted to the instrument cluster over the CAN circuits 3125 (RD/YE) and 3126 (TN/YE) and the UBP communication network, circuit 693 (OG).