VEHICULAR EXTERIOR REARVIEW MIRROR ASSEMBLY WITH BLIND SPOT INDICATOR ELEMENT

A vehicular exterior rearview mirror assembly includes a mirror reflective element subassembly having a mirror reflective element, a mirror reflector coating, a mirror back plate, and indicator element. The indicator element includes a circuit board and a light source. The indicator element includes a diffuser that diffuses light emitted by the light source. An icon is established through a metallic reflector coating disposed at the glass substrate. The icon includes a light-transmitting aperture. With the vehicular exterior rearview mirror assembly attached at the vehicle, and when the light source is activated, light emitted by the light source passes through a light-transmitting portion of a heater pad and through the light-transmitting aperture of the icon. With the vehicular exterior rearview mirror assembly attached at the vehicle and when the light source is activated, the icon is illuminated and is viewable by the driver of the vehicle.