2015 VW Jetta SE 1.8L turbo. windshield washer level sensor issue.

hello i have a 2015 Jetta SE. so the problem i have is that i have never gotten any sign on the dashboard for my windshield washer fluid being low even though its completely empty. my question: where is the sensor located? i bought the sensor but i cant seem to find where the location is. ( i know where the washer pump is. and the sensor is not located next to it or around it)