Low Brake Fluid Indicator
WARNING: This page is about a different car, the 2004 Pontiac Aztek and 2004 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.
The IPC illuminates the low brake fluid indicator in the message center when the IPC receives a low signal from the low brake fluid switch. The IPC sends a class 2 message to the radio in order to activate an audible warning.