How do you check the function of the wiper blades?

To check the function of the wiper blades, the best approach is to operate them to ensure they effectively clear the windshield. This involves turning on the wiper system and observing their performance under various conditions, such as rain or when the windshield is sprayed with washer fluid. The ability of the wipers to clear debris and water from the windshield is crucial for visibility and safe driving, making this operational check essential during a pre-trip inspection.

While inspecting the wiper blades for physical damage, measuring the blade length against manufacturer specifications, and checking the washer fluid level are all important parts of vehicle maintenance, they do not directly assess the wiper blades' operational function. The primary goal here is to verify that the wipers work as intended to ensure optimal visibility for the driver.