A sensor arrangement for a vehicle window includes a mounting frame having an engagement portion, a sensor housing attachable to the mounting frame, a spring-loaded bracket connected to the sensor housing, and a two-arm lever. The lever is pivotably mounted to the bracket, wherein pivoting of the lever causes the bracket to compress and press the sensor housing against the mounting frame. The second lever arm engages the engagement portion of the mounting frame after the lever is further pivoted to a final assembly position to thereby hold the sensor housing in place against the mounting frame.