I had some "summer" bug washer fluid in my windshield washer reservoir, and I needed to change it out for some regular washer fluid that has a low freezing point. So I started pulling the tank out, but then realized I didn't feel like unhooking the connections (sensor and pump), so I just used a baster/syringe to remove the fluid through the opening on top. Poured in the new washer fluid, started up the car, "low washer fluid."

Okay, well the warning doesn't bother me as much as the fact that now my pump isn't working either! What did I do?? I barely touched the sensor and pump, yet now neither of them seem to be working. When I pull the column lever for fluid to spray, the pump doesn't even make any noise. I checked for power to the pump, and it's getting 12v. The connections look fine. I can't find which fuse is associated with them. Could both my pump AND sensor have failed at the same time?