What are the reasons for the rear wiper not working?

[OAustin]

Rear wiper not working is due to the wiper motor being damaged. The following is an introduction about the wiper: How the wiper works: The power source of the wiper comes from the motor, which is the core of the entire wiper system. The quality requirements for the wiper motor are quite high. It uses a DC permanent magnet motor. The wiper motor installed on the front windshield is generally integrated with the worm gear mechanical part. The function of the worm gear mechanism is to reduce speed and increase torque. Its output shaft drives the four-bar linkage, which converts continuous rotary motion into left and right swinging motion. Notes for replacing the wiper: You can refer to the vehicle manual to see the wiper model indicated on it. Pay attention to whether the connection method of the arm to the wiper rocker arm matches. Because the arm is fixed to the rocker arm with screws, while some are locked with buckles. Lift the wiper and touch the cleaning rubber wiper with your fingers to check for any damage and the elasticity of the rubber blade. If the blade is aged, hardened, or cracked, then the wiper is unqualified.