A vehicular lighted exterior rearview mirror system includes a lighted exterior rearview mirror assembly and a light module disposed thereat. The light module includes at least three illumination sources that, with the lighted exterior rearview mirror assembly attached at the side of the vehicle, are arranged spaced apart at the lighted exterior rearview mirror assembly. With the lighted exterior rearview mirror assembly attached at the side of the equipped vehicle, the at least three illumination sources, when powered, emit light at least in a forward direction with respect to the vehicle. Responsive to activation by the driver of the user input of the equipped vehicle, any one or more of said illumination sources is electrically powered. Responsive to adjustment of the user input by the driver of the equipped vehicle, an intensity of illumination forward of the equipped vehicle provided by said light module is adjusted.