Brake System Indicator
WARNING: This page is about a different car, the 2010 Pontiac G5 and 2010 Chevrolet Cobalt. However, it is still accessible from the selected car via links, so may be relevant.
The instrument panel cluster (IPC) illuminates the brake indicator when any of the following occur:
- The body control module (BCM) detects that the park brake is engaged. The IPC receives a serial data message from the BCM requesting illumination. If the vehicle is shifted out of park with the park brake engaged, the BCM sends a serial data message to the radio in order to activate the audible warning.
- The BCM detects a low brake fluid condition. The IPC receives a serial data message from the BCM requesting illumination.
- The electronic brake control module (EBCM) detects a brake failure condition. The IPC receives a serial data message from the EBCM requesting illumination.
- The IPC performs the displays test at the start of each ignition cycle. The indicator illuminates for approximately 3 seconds.
- The IPC detects a loss of serial data communications with either the BCM or the EBCM.