Abstract: A button assembly for an exterior of a vehicle is disclosed. The button assembly is designed with improved water drainage properties. The button assembly includes a button switch and a bezel housing surrounding the button switch that is spaced apart from the button switch. A channel extends between the two components. In one example, the channel has a width of approximately 0.5 mm at one end. In another example, the channel is formed between two surfaces, and the outer surface is sloped relative to the button switch by approximately 15 degrees. Furthermore, in some examples, the channel has a height of approximately 3 mm. Each of these structural characteristics serves to significantly improve the assembly's overall drainage performance, which may be especially essential in colder climates.