Lights On Warning
WARNING: This page is about a different car, the 2008 Pontiac G5 and 2008 Chevrolet Cobalt. However, it is still accessible from the selected car via links, so may be relevant.
The radio activates the lights on warning as requested by the body control module (BCM). The BCM sends a serial data message to the radio indicating the chime frequency and duration. The lights on warning sounds when the following occurs:
- The ignition is OFF.
- The BCM determines that the driver door is open.
- The BCM determines that the headlamp switch is in the PARK or HEAD position.