Lexus NX350h Windshield Wipers Aren't Working

Common Causes for Non-Functioning Windshield Wipers on Your Lexus NX350h and How to Fix Them

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Reviewed by
Devin Cabugcal
Written by RepairPal Car Genius
Updated January 14, 2025
0%
75% chance it's the
Wiper Motor
0%
25% chance it's the
Switch
The most common reasons a Lexus NX350h windshield wipers aren't working are broken wiper motor and issues with the switch.
  • Wiper Motor: A faulty wiper motor or a bad electrical connection can result in intermittent or non-functioning windshield wipers.
  • Switch: A faulty switch can result in intermittent or complete failure of the electrical component it controls, leading to malfunctioning systems.
Proper diagnosis will determine the exact cause of your symptom, saving you money on unnecessary repairs. The diagnostic experts at RepairPal Certified shops have the right tools and experience to solve any symptom.

How much does it cost to fix a Lexus NX350h windshield wipers aren't working?

Common Repairs

The total repair cost will vary based on the condition of your vehicle and the number of repairs needed to fix your symptom. Proper diagnosis will save you money by finding the exact repairs needed to fix your car right the first time.

Inability to control the windshield wipers comes in several forms, and they are all indicative of windshield wiper switch failure. The windshield wipers may not work in all settings, may not turn on when requested, may not move to their parked position when turning off, or the washer pumps may or may not run at random. This is a general list of symptoms, but failure of anything the windshield wiper switch controls will indicate the need for testing the windshield wiper and washer switch.

A failed windshield wiper motor will do one of two things in the event of failure. First, it can intermittently work, meaning when the wiper switch is turned on, the windshield wipers may activate, and run for a random amount of time. This may happen at random, or change with a bump. Lastly, the windshield wipers could show no signs of activity, indicating motor failure.

The moment water touches the windshield, you know if you need new windshield wiper blades. If your wiper blades are torn, cracked, hard, or brittle, it is time for replacement. Wipers should also be replaced if the wiper blades only smear water around, seem to make a mess, streak the windshield, and miss large patches. If you are unhappy with the current wiper blades on your vehicle, this is a very economical change to make.

Windshield wiper arms will be replaced mainly for aesthetic reasons or damage. If the windshield arms become bent or rusted, the windshield wipers may not contact the windshield at the proper angle, or there may be no contact at all. Also, the sun will take a toll on these parts after years of use, and fading or clear coat peeling will result, not to mention rust.

Troubleshooting Non-Functional Windshield Wipers in a Lexus NX350h

When troubleshooting non-functional windshield wipers in a Lexus NX350h, it's essential to adopt a methodical diagnostic approach. Begin by inspecting the wiper motor, as a faulty motor is a common culprit for wiper failure. Before assuming the motor needs replacement, check for simpler issues such as a blown fuse or a malfunctioning switch, which can often be resolved without extensive repairs. Next, examine the wiper arms for any signs of damage, such as cracks or bends, which can prevent them from applying adequate pressure to the wiper blades. If the arms are compromised, they may need to be replaced to ensure proper function. Additionally, if you need to remove the wiper arms for inspection or replacement, be prepared to use specific tools like a battery post puller or an open-end wrench to safely detach them. By following this structured approach, you can effectively diagnose and potentially resolve the issue with your windshield wipers, ensuring a clear view during inclement weather.

What Are the Common Problems Causing Windshield Wipers to Fail in a Lexus NX350h?

When dealing with windshield wiper failure in a Lexus NX350h, it's essential to understand the common problems that may arise. A broken wiper motor is often the primary culprit, as it directly affects the movement of the wiper blades when activated. If you notice that the blades are not responding at all, this could be the issue. Additionally, problems with the wiper switch can prevent the wipers from functioning correctly; if the switch feels loose or unresponsive, it may need replacement. Another factor to consider is the rain sensor, which can malfunction due to temperature extremes, leading to erratic wiper behavior. Lastly, incorrect positioning of the wiper blades can cause them to operate improperly, either wiping past the A pillar or failing to cover the windshield adequately. Addressing these issues promptly is crucial for maintaining visibility and safety while driving, especially in inclement weather. For DIY repairs, start by checking the motor and switch connections, inspecting the rain sensor for any visible damage, and ensuring the wiper blades are correctly aligned and functioning as intended.

Why Are the Windshield Wipers Not Working on a Lexus NX350h?

When your Lexus NX350h's windshield wipers fail to operate, it’s crucial to act promptly, as neglecting this issue can lead to dangerous driving conditions, especially in inclement weather. Common culprits include a malfunctioning wiper motor or a faulty switch, which can prevent the wipers from responding altogether. If you notice any movement or noise when activating the wipers, the problem may be less severe and potentially easier to fix. Additionally, ensure that your wiper blades are installed correctly and functioning effectively; improperly installed blades can hinder visibility and require replacement. It's also important to check the positioning of the wipers; if they are not aligned properly, adjusting the wiper arm may resolve the issue. Addressing these problems quickly not only enhances your driving safety but also helps avoid more extensive repairs down the line.

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