Inexpensive fix for low windshield washer fluid light stiuck on

[Toolaholic]

Hi all, I use rain x( the orange kind) windshield washer fluid. My low fluid light has been on for weeks regardless of amount of fluid in reservoir. This happened begire and cleared up in a week. This time it was in for like 8 weeks. Not willing to dismantle the front end of the car to replace sensor, I ran reservoir almost dry and filled with distilled water in hopes the pure water would absorb any stickiness, grime that was making sensor stick. It took 2 weeks but windshield washer fluid light went out. Cheap fix that's worth a shot.