What are the reasons for the RAV4 wiper not cleaning properly?
2 Answers
RAV4 wiper not cleaning properly can be caused by issues with the wiper angle, dirt on the windshield, or hardened wiper blades. Below are the specific reasons: Wiper Angle Issue: If the wiper isn't cleaning properly due to an angle issue, the owner only needs to adjust it. Adjustment method: Use an adjustment wrench to clamp the wiper, then gently rotate it to adjust it to a vertical position. If it still doesn't work, the wiper may be applying too much pressure; simply loosen the spacing between the springs. Dirt on the Windshield: Wet the glass with water and gently run your hand back and forth over it. If the surface feels uneven, it indicates the presence of foreign matter. To remove it, try wiping with warm water several times first, then gently rub back and forth with your hand. Alternatively, use newspaper to gradually remove stubborn dirt. After rinsing with water, run your hand over the glass again—it should feel very smooth. Then, turn on the wiper to test; it should now clean very effectively. Check if the Wiper Blades Have Hardened: Wipers exposed to long-term sunlight, wind, and rain may inevitably experience rubber deterioration. If the wiper isn't cleaning properly, it could be due to aged rubber or dirt on the wiper blade. Inspect it or replace the wiper if necessary.
I've been driving a RAV4 for several years, and it's quite common to encounter issues with the wipers not cleaning properly. The main reason is usually aging wiper blades; the rubber hardens over time, leading to uneven wiping. Another cause is the buildup of oily residue on the windshield, such as tree sap or bird droppings from parking under trees, which forms a dirty layer over time and causes smearing when the wipers are used. Loose wiper arm installation can also result in uneven pressure, like after hitting bumps. I've tried cleaning the glass with soapy water or specialized degreasers, which works well, but it's best to replace the wiper blades regularly—once a year is sufficient. Poor visibility during rainy conditions can easily lead to accidents, so it's important to address the issue promptly. Regular car cleaning is also essential, like wiping the glass during washes instead of just focusing on the exterior. I usually buy compatible wiper blades online—they're affordable and easy to install. Long-term neglect may increase risks, so I recommend checking them during every maintenance session.
