Washer Fluid Level Indicator: Testing and Inspection

On the mechanical indicating system, if the telltale lens fails to glow when the windshield wipers are activated, check lamp bulb in sending unit and see that fiber optic is not broken.
On the electrically controlled system, the first item to check is the indicator bulb. With the windshield wipers On, connect a jumper wire between the two terminals on the washer bottle cap. The indicator should then light. If not, replace bulb. If the bulb is found to be satisfactory, remove cap and float assembly from washer bottle. Float should be able to move to the bottom of the stem and the magnet should separate from the cap. If not, replace float and cap assembly.