The wiper motor is a small motor that powers the front or back windshield wiper to clear the windshield of water, dirt, and debris.

The wiper’s motors should be replaced immediately when visibility through the windshield is affected by the buildup of fog or dust to the extent that it regularly affects the driver. It is also recommended to be replaced when the power from the electric motor does not push the windshield wipers effectively enough to clean the surface.