For 20 years since purchased in 2005 did not know my Audi A-4 Quatro even had headlight washers and still no idea how the passenger-side bumper assembly and cap broke off. Recently had the car refurbished/repainted, bought the headlight cap on eBay, had it painted, installed, and killed the headlight washer pump so this never happens again. If interested, attached some pictures. Thank you,