A lighted exterior rearview mirror system for a vehicle includes a lighted exterior rearview mirror assembly and a light module disposed thereat. The light module includes a plurality of illumination sources operable to emit light in a generally forwardly direction with respect to the vehicle. The light module includes at least one turn signal indicator illumination source that, at least responsive to an activation of a turn signal by the driver of the equipped vehicle, is operable to emit light in a generally sidewardly and/or rearwardly direction with respect to the vehicle. The light module includes a light piping element and the turn signal indicator illumination source is disposed at an inboard end of the light piping element and the light piping element guides light emanating from the turn signal indicator illumination source along the light piping element and out an outboard end of the light piping element.