A vehicular exterior rearview mirror assembly includes a mirror casing, a mirror reflective element and a ground illumination module having a freeform optic, a ground illumination light source, and first, second and third icon light sources. With the vehicular exterior rearview mirror assembly mounted at the side of the vehicle and when the ground illumination light source is electrically powered to emit light, light emitted by the ground illumination light source that passes through the freeform optic illuminates the ground region adjacent to and along the side of the vehicle with a ground illumination intensity. When each individual icon light source is electrically powered to emit light, light emitted by the respective icon light source projects a respective projected image onto an icon region that is within the ground region. The respective projected images are individually projected to provide animated images projected onto the icon region.