A vehicle window includes a glass pane, an electrically conductive functional component, at least two busbars, wherein the electrically conductive functional component is electrically conductively connected to the busbars such that when an electrical voltage is applied to the busbars, a current can flow through the electrically conductive functional component, a transponder having an antenna and a control unit for communicating with a reader, wherein the control unit includes a memory for storing identification data, wherein a reflector is associated with and spaced apart from the transponder for increasing an antenna gain of the antenna, wherein the reflector is formed at least partially by one of the two busbars.