VEHICULAR REARVIEW MIRROR CONTROL SYSTEM

A vehicular rearview mirror control system includes an interior rearview mirror assembly and a rearward-viewing camera disposed at a vehicle. The system, via processing of a first subset of image data captured by the rearward-viewing camera, is operable to detect ambient light rearward of the equipped vehicle. The system, via processing of a second subset of the image data captured by the rearward-viewing camera, is operable to detect light emanating from a headlight of another vehicle following the equipped vehicle. The first subset of the image data captured by the rearward-viewing camera is different than the second subset of the image data captured by the rearward-viewing camera. Responsive to determining that the detected light emanating from the headlight of the other vehicle glares a driver of the equipped vehicle, the ECU controls dimming of the electro-optic mirror reflective element of the interior rearview mirror assembly.