Brake System Indicator

WARNING: This page is about a different car, the 2003 Buick Regal, 2003 Buick Century, 2002 Buick Regal, and 2002 Buick Century. However, it is still accessible from the selected car via links, so may be relevant.

The Instrument Panel Cluster (IPC) illuminates the Red brake indicator lamp when the following occurs:

The Body Control Module (BCM) detects that the park brake is engaged. The IPC receives a class 2 message from the BCM requesting illumination. If the vehicle is shifted out of park with the park brake engaged, the BCM activates an audible warning.
The IPC detects a low brake fluid condition (signal circuit is low).
The IPC performs the displays test at the start of each ignition cycle. The indicator illuminates for approximately 3 seconds.