What Causes Intermittent Wiper Operation?

[VonJocelyn]

You can identify the cause by checking the following aspects: 1. Inspect the wiper motor: After opening the car hood, you can see the wiper motor. Touch the motor with your hand; if it feels scalding hot, it indicates an internal short circuit in the motor. Replacing the motor will solve the problem. 2. Check the wiper fuse: To protect the car's wiring, each electrical device is equipped with a fuse. Check if the wiper fuse is blown and replace it with a spare fuse from the car. 3. Examine the wiper switch: Although the wiper switch is not used frequently, car electronics can be inherently unstable. If no issues are found in the above checks, consider that the wiper switch might be faulty. You can use a multimeter to test the switch or simply replace it with a new one for testing. 4. Inspect the wiper wiring: Checking the wiring is a more complex and time-consuming task. You need to be proficient in using an automotive multimeter to measure voltage, resistance, and current, and combine this knowledge with practical application to locate the wiring fault causing the wipers to malfunction.