- Wiper linkage disconnected
- Wiper linkage seized or damaged
- Incorrectly sized wiper blades on vehicle
- Damaged or worn out wiper blades
- Poor contact between the wiper linkage and the wiper motor
- Faulty wiper motor
- Blocked wiper nozzles (if equipped with washer fluid)
- Blown fuse or damaged wiring
- Incorrectly adjusted wiper blade arms