I just had to deal with this issue. Turns out that the wires controlling the windshield washer motor and level are routed under the battery in a nice level spot where mice and rats like to nest. The mouse I had ate the four wires back to the harness and into the fender well. There also is a gray pneumatic line running through there that I don't know what it does, but the mouse ate it as well. Check under your battery to see if the harness is okay. After re-connecting the wires, the washer motor and level indicator worked again.