Auto Headlamps

On vehicles equipped with the auto headlamp feature, the Body Control Module (BCM) will control the exterior lamp operation by monitoring the mode selection switch located in the headlamp control panel. When auto headlamp mode is selected the BCM will then monitor for a on/off signal from the Electo-Chromic Rear View Mirror. The mirror will determine the appropriate ambient light levels for turning on/off the exterior lamps. If in auto headlamp mode, exterior lamps are on (due to darkness), and the ignition switch is cycled off, the BCM will enter headlamp delay mode (see Headlamp Delay Feature description).