What are the causes of windshield wiper failure?

[DeJayla]

Windshield wiper failure is typically caused by motor malfunction or issues with the switch and linkage. Motor troubleshooting methods: If the motor rotor is broken or the carbon brushes are worn, preventing current from passing through the motor, replace the motor, rotor, or carbon brushes. If the motor overheats after 4-5 minutes of operation and burns out, replace the motor. If there is an internal short circuit or burn damage in the motor, causing the wiper fuse to blow, replace the motor or repair the short circuit. Switch and linkage troubleshooting methods: If the switch has poor contact and the motor does not receive power, replace the switch. Inspect the linkage components; if other parts of the linkage are stuck or the wiring is tangled, or if the linkage has come loose, perform repairs. Check if the wiper arm can move forward and backward. If the wiper arm is burned out or rusted and cannot move, add lubricant or replace it.