Why Doesn't the Wiper Clean Properly?

[NolanLynn]

If the wiper doesn't clean properly, it may be due to incorrect positioning or the need to replace the rubber strip. Below is relevant information about wipers: 1. Wiper switch position: The wiper switch for most vehicles on the market is located on the right-hand stalk behind the steering wheel, typically in a stalk-style design. Similar to the light stalk, the wiper stalk has various function symbols printed on it. Although the symbols and their positions may vary between brands, the functions are generally similar. 2. How to use the wiper: Icon – Manual operation. Push the stalk upward, and the wiper will start working continuously. Release the stalk, and it will automatically return to its original position, stopping the wiper. Suitable for clearing small amounts of water or debris from the windshield. OFF – The front wiper stops working. INT – Automatic intermittent operation. Pull the stalk down one notch, and the wiper will start working intermittently. This setting requires manual resetting and is suitable for light rain or snow. LO – Continuous operation. Pull the stalk down another notch, and the wiper will operate continuously at a steady rate. This setting also requires manual resetting and is suitable for heavier rain or snow. HI – Continuous high-speed operation. Pull the stalk all the way down, and the wiper will operate at high speed. This setting requires manual resetting and is suitable for heavy rainstorms.

[ClaireMarie]

It's really annoying that my car's wipers aren't cleaning properly. The main issue is the aging wiper blades—the rubber hardens and cracks over time, losing tight contact with the glass. The oily film on the windshield is also troublesome, especially when parked under trees or near kitchens, as grease and dirt cause the wipers to skip. Additionally, if the wiper arm springs loosen and don't press firmly against the glass, many areas will be missed. Summer sun accelerates blade deterioration, while winter ice can easily crack them. I recommend wiping the blades with a damp cloth monthly to remove dust and extend their lifespan. Replacing the blades isn't expensive and can be done DIY—just remember to choose silicone material for better durability.

[McAddyson]

Last time I noticed the wipers always left water streaks after wiping, which actually has a lot to do with installation. If the wiper blade isn't clamped tightly, the fixing buckle on the glass is loose, or the linkage is rusted and deformed, it can cause the wiping path to deviate. An uneven glass surface is also a hidden danger, as fine scratches from small stones can cause the wiper to skip. When the spray nozzles are clogged, the water flow becomes uneven, and dry wiping damages the rubber blade even more. When choosing wiper blades, pay attention to matching the curvature of your car model—blades that are too hard or too soft will affect the fit. For temporary fixes, try cleaning the windshield thoroughly; sometimes removing oil film can improve the situation. If there's unusual noise from the linkage, the mechanical parts need to be inspected and repaired promptly.

[VanEmery]

My experience is that a dirty windshield has the greatest impact on performance. Tree sap and bug residue dry on the glass, making it impossible for the wipers to remove them and damaging the rubber blades. When oil film is severe, it's like applying oil—after wiping, the glass is covered in water droplets. Worn blades with uneven pressure on both sides cause the wipers to skip. Using an oil film remover to clean the glass during car washes is very effective, and a soft-bristled toothbrush can clean the gaps in the rubber blades. It's best to replace the blades before the rainy season, and remember to lift the wiper arms when parking to prevent the rubber from sticking to the glass and aging. Scratches on the glass can also cause poor wiping, so small damages should be repaired promptly.

[AubreeRose]

A few days ago, the mechanic told me that wiper issues are often overlooked. When the rubber blades crack and lose elasticity, they squeak and leave water streaks. The wiper arm springs lose pressure over time, especially in cars that are three or four years old—fatigued springs can't press the blades firmly. Stubborn stains on the windshield require professional cleaners, as regular car wash soap won't remove oil film. If the wiper motor is overloaded, its speed becomes unstable, causing uneven wiping. A deformed blade frame is even more troublesome, but replacing the whole set isn't expensive. Remember not to operate the wipers dry, and use antifreeze washer fluid with fewer impurities to avoid clogging the nozzles.

[OAurora]

During the last heavy rain, I noticed the wiper performance had deteriorated, so I promptly checked all components. The rubber blades had deformed from sun exposure, reducing wiping efficiency. When oil film buildup was severe, the wipers left fan-shaped water streaks. Rust on the wiper arm caused stuttering, shrinking the wiping range. Windshields frequently used on highways develop tiny pits, affecting blade contact. When replacing blades yourself, pay attention to size specifications - incorrect installation may cause missed spots. Using clay bars during windshield cleaning helps remove oxidized layers; for emergency fixes, lightly sanding the blade edges can help. Always lift wipers when parked, especially in snowy conditions, to prevent frozen blades from tearing.