What Causes the Car Wiper to Keep Running Nonstop?

[CassandraFitz]

When the car wiper keeps running nonstop, it is usually due to a fault in the wiper motor's circuit. When the driver operates the wiper handle, the demand signal is transmitted to the BCM (Body Control Module). The BCM then sends a start signal to the wiper motor, which controls the movement of the wiper arm to perform the corresponding action. The driver can disconnect the negative terminal of the battery to stop the wiper. Without activating the wiper handle, the car should be driven to a repair shop or 4S store to check for wiring issues. The power source of the wiper comes from the motor, which is the core of the entire wiper system and has stringent quality requirements. Typically, a DC permanent magnet motor is used, and the wiper motor installed on the front windshield is usually integrated with the worm gear mechanical assembly.