Wiper Linked Auto Lighting Function
WARNING: This page is about a different car, the 2011 Nissan Leaf. However, it is still accessible from the selected car via links, so may be relevant.
BCM turns the exterior lamps ON when detecting 4 operations of the front wiper work the light switch in AUTO position.
NOTE:
BCM turns OFF the headlamps 3 seconds after the front wiper switch is turned from ON==>OFF.