Electric Chromic Mirror (ECM): (if equipped)
The electric rear view mirror automatically controls the glare from the headlamps of the vehicles behind you in nighttime or low light driving conditions.

OCV041036N
The sensor mounted in the mirror senses the light level around the vehicle, and automatically controls the headlamp glare from the vehicles behind you.
When the vehicle is running, the glare is automatically controlled by the sensor mounted in the rear view mirror.