A vehicle exterior device includes: a base member; a cover attached to the base member in a watertight manner, the cover and the base member forming a housing space therebetween, the cover having at least one opening; a functional unit including a holder located on the base member in the housing space, and a functional component supported by the holder with a leading end thereof being exposed through the opening; and a sealing portion located around the opening between an outer face of the functional unit and an inner face of the cover.