Originally Posted by Display_Name

Actually, this may not be broken at all.

For some strange reason this system is designed so that if you overfill the windshield washer fluid reservoir the excess fluid will come out below the car. You will never see the "neck" fill up where you put in the fluid.

Does your sprayer still work? If so, and there is fluid coming out, don't panic about the reservoir being broken. They all spill over and leak out the bottom of the car when overfilled.