Lights On Warning

The radio activates the lights on warning as requested by the body control module (BCM). The BCM sends a class 2 message to the radio indicating the chime of a fast rate frequency and duration (continuous).

The lights on warning sounds when the following occurs:

• The ignition is OFF (key out of the ignition).
• The BCM determines that the driver door is open (signal circuit is low).
• The BCM determines that the headlamp switch is in the park or head position.