An exterior mirror system for a vehicle includes an exterior mirror assembly having an indicator having at least one light emitting diode. The indicator may include a light guiding element that guides light emitted by the at least one light emitting diode. The at least one light emitting diode may be associated with circuitry of the exterior mirror assembly. During low ambient lighting conditions at night, the intensity of light emitted by the at least one light emitting diode of the indicator is reduced under photosensor control to a nighttime intensity level. The nighttime intensity level is greater than about 0.3 candela and is less than about 200 candelas.