Circuit/System Description
WARNING: This page is about a different car, the 2016 Chevrolet Trax and 2016 Buick Encore. However, it is still accessible from the selected car via links, so may be relevant.
The lane departure warning is enabled and disabled through the lane departure warning switch located in the center console. When enabled, the frontview camera module will illuminate the indicator located in the switch.
The BCM supplies voltage to the indicator from the lighting dimming circuit. The frontview camera module turns on the indicator by proving the ground.