
This light is green if LDW is on and ready to operate.
This light changes to amber and flashes to indicate that the lane marking has been crossed without using a turn signal in that direction.
See Lane Departure Warning (LDW) (2500/3500 Series).
Hill Descent Control Light
Lane Keep Assist (LKA) Light (1500 Series)If equipped, there is a small convex mirror built into the upper and outer corner of the driver outside mirror. It can show objects that may be in the vehicle's blind zone.
Driving with the Blind Spot Mirror

Actual Mirror View
When the approaching vehicle is a long distance away, the image in the main mirror is small and near the inboard edge of the mirror. As the vehicle gets closer, the image in the main mirror gets larger and moves outboard. As the vehicle enters the blind zone, the image transitions from the main mirror to the blind spot mirror. When the vehicle is in the blind zone, the image only appears in the blind spot mirror.