Washer Fluid Level Sensor Replacement Cost Estimate

In some cases, the technician can diagnose the windshield washer reservoir fluid level sensor by simply unplugging the sensor, and checking that the warning lamp has turned off. In all other cases, the reference voltage from the control module will be checked at the electrical connection for the windshield washer fluid level sensor, and back probing the connector will allow the technician to check for a change in signal voltage when the windshield washer fluid level sensor probes are closed and open.

If the sensor has failed, the technician will need to removed the inner fender well in most cases. This will provide access to the damaged windshield washer fluid level sensor. THe sensor will be removed, and all fluid will be caught in a drip pan. The new sensor will be reinserted into the side or top of the reservoir, and fastened with the appropriate mounting hardware. The windshield washer fluid low warning lamp will be observed to ensure it indicates low fluid levels before the reservoir is filled with clean, new windshield washer fluid. Afterwards, the windshield washer fluid low warning lamp will be checked to ensure it has turned off, thus signaling completion of the repair.

We recommend completely draining the windshield washer fluid reservoir any time service is conducted. This will allow the reservoir to be cleaned, and rid the reservoir of contaminants that may damage the windshield washer fluid pump or clog the windshield washer fluid lines and nozzles.

A gentle hand is needed when performing service on the windshield washer fluid reservoir. Over time, the reservoir may become brittle, which would become evident when the switch is removed and replaced. Any breakage of the port for the fluid level sensor will result in leaks, and the reservoir will need to be replaced.