This Rear Tailgate Trunk Lid Light Lamp Switch is a direct replacement for vehicles compatible with part number 4L0959121 (also listed as 4L0 959 121).It fits Q5 models from 2009 to 2017 and Q7 models from 2007 to 2016.The switch measures 7 cm in width, 8 cm in height, and 15 cm in length.It is constructed from plastic and designed to restore functionality of the rear tailgate trunk lid light lamp system.Installation follows the configuration and requires no modification to the vehicle's wiring or mounting points.