Lexus ES350 Windshield Wipers Aren't Working

Common Causes of Non-Functional Windshield Wipers in Your Lexus ES350 and How to Fix Them

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Reviewed by
Aisha
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 ES350 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 ES350 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 ES350

When troubleshooting non-functional windshield wipers in a Lexus ES350, it's essential to adopt a methodical diagnostic approach. Start by checking the simplest potential issues, such as ensuring that the wiper switch is functioning correctly and that the wiper blades are not obstructed or damaged. If the wipers are still not operating as expected, examine the intermittent wiper setting, as a malfunction here can lead to erratic behavior or failure to park properly. Next, inspect the wiper motor and its connections, as a faulty motor can cause the wipers to stop moving entirely. If you hear unusual noises when activating the wipers, this could indicate mechanical issues that may require further investigation. Additionally, consider the impact of the rain sensor; disconnecting it can sometimes reset the system and resolve control issues. By following this step-by-step approach, you can effectively diagnose and address the problems with your windshield wipers, ensuring they function reliably in all weather conditions.

What to Check When Windshield Wipers Aren't Working on a Lexus ES350?

When your Lexus ES350's windshield wipers fail to operate, it's crucial to systematically identify the underlying issues. Start by examining the wiper motor, as a malfunction here is a frequent cause of wiper failure. Next, check the wiper switch; if it's faulty, it can disrupt the entire wiper system. Pay attention to the intermittent wiper setting as well, since problems in this area may indicate broader issues within the wiper mechanism. Electrical problems are another common culprit; if the wipers remain unresponsive, inspect the wiring and connections for any faults. Additionally, the wiper relay should be evaluated, especially if the wipers are stuck on a single speed. Don't overlook the fuse, as a blown fuse can completely disable the wipers. Lastly, ensure there are no mechanical obstructions, such as ice or debris, that could hinder the wipers' movement. Regular maintenance, including lubricating the linkages and ensuring the wiper arms are correctly positioned, can also help prevent these issues from arising in the first place. By methodically checking these components, you can effectively diagnose and resolve the problem, restoring your windshield wipers to full functionality.

Why Are the Windshield Wipers Not Working on a Lexus ES350?

When your Lexus ES350's windshield wipers fail to operate, it’s crucial to address the issue without delay. Ignoring malfunctioning wipers can significantly impair your visibility during rain or snow, increasing the risk of accidents. Common culprits include a broken wiper motor or a faulty switch, both of which can prevent the wipers from functioning correctly. Additionally, clogged washer nozzles can hinder the washer system, making it difficult to clear your windshield. Other potential issues, such as torn wiper blades, blown fuses, or even extreme weather conditions, can exacerbate the problem. If the wipers are not parking correctly or are erratic, it may simply require an adjustment. By diagnosing and resolving these issues promptly, you not only ensure your safety on the road but also prevent further damage to your vehicle's wiper system.

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