Why Can't the Wiper Be Turned Off?

[DiEleanor]

The reason the wiper cannot be turned off is likely due to an electrical issue. It could be a faulty combination switch or a damaged wire where the wiper's negative terminal connects to the vehicle body. The wiper is a blade-like structure installed in front of the windshield, consisting of a motor, reducer, four-bar linkage, wiper arm spindle, and wiper blade assembly. Its primary function is to clear rain, snow, and dust from the windshield that obstructs visibility. 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 very high, typically using a DC permanent magnet motor. The wiper motor installed on the front windshield is usually integrated with the worm gear mechanical part.