Contact Surface Cleaning Set VAS 6410: Protecting: Procedure
WARNING: This page is about a different car, the 2016 Volkswagen Beetle, 2015 Volkswagen Beetle, 2014 Volkswagen Beetle, 2013 Volkswagen Beetle, and 2012 Volkswagen Beetle. However, it is still accessible from the selected car via links, so may be relevant.
-- Hold the injector under the wiring eyelet and spray all around the pins.
-- Hold the injector above the wiring eyelet and spray all around the pins and wiring eyelet.