4 Common Causes of Squeaky Windshield Wipers

Windshield wipers are vital pieces of safety equipment. But, like many vehicle parts, we often forget about them until they stop working properly.

I don’t know about you, but when windshield wipers start making that high-pitched squeaking sound every time they move across the windshield, I’ll go nuts if I have to endure it for long. Luckily, the solutions are usually pretty simple.

Here are the four most common causes of squeaky windshield wipers so you’ll know what to do next time your wipers start making a ruckus.

Dirty Glass

Dirty glass is the most common cause of squeaky windshield wipers by far. Small particles of dirt, sand or road salt sprinkled across the glass can cause friction when the wipers pass over, leading to unwanted squeaking.

Give your windshield a thorough wash and rinse, then try the wipers again. Chances are the noise will be greatly diminished.

Dirty Blades

While dirt and debris often build up on the windshield, wiper blades can collect it, too. If you’ve cleaned your windshield and the squeaking still happens, lift your wipers and examine the rubber squeegees closely. If you notice a buildup of dirt, wash them thoroughly. Use a toothbrush to remove dirt from all the nooks and crannies along the blade.

If you have replaced the wiper blades or you don’t see any dirt on the blades, the rubber squeegees may still be coated with protective oil from the factory, especially if your wipers are new. Like dirt and debris, this oil can cause squeaking. Remove it by cleaning your wipers carefully with rubbing alcohol. Some manufacturers place protective sleeves over the wiper blade in the packaging; remember to remove that before expecting good results! Ask me how I know.

I’ve habitually cleared away any debris from the wiper blades every time I get into my vehicle. If I need to use them, they are clean and ready to go. Remember, regular maintenance makes your wiper blades last longer.

Failing Wipers

If your wiper blades and windshield are perfectly clean but squeaking persists, there may be a structural issue with the wipers.

Check the rubber squeegees first. Over time, they become hard and brittle, losing their ability to flex as they move across the windshield. Brittle wiper squeegees won’t wipe well and will almost certainly squeak or stutter across the windshield. Buy and install new squeegees, and the problem will likely be resolved.

If the squeegees are in good shape, the wiper mechanism itself may need adjustment, or it may be failing and need mechanical work. Learn how long windshield wipers last.

Dry Wiping

Even if nothing’s wrong with your wipers, they’ll probably squeak if you use them on a dry windshield.

If your wipers are in good shape and you notice squeaking, take a second to evaluate the weather conditions. Is there just a light sprinkling of rain on your windshield? If so, there’s probably insufficient moisture to lubricate your wipers as they move. Squirt some washer fluid onto your windshield, and chances are the squeaking problem will be solved.