2015 Mercedes-Benz E400 Windshield Wipers Aren't Working

Common Causes of Windshield Wiper Malfunctions in Your 2015 Mercedes-Benz E400 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 2015 Mercedes-Benz E400 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 2015 Mercedes-Benz E400 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.

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.

What steps should I take to diagnose the non-functioning windshield wipers on my 2015 Mercedes-Benz E400?

When diagnosing non-functioning windshield wipers on your 2015 Mercedes-Benz E400, it's essential to adopt a systematic approach that prioritizes simpler solutions before delving into more complex issues. Start by checking the fuse associated with the windshield wipers, as a blown fuse is a common and easily fixable problem. If the fuse is intact, proceed to inspect the wiper motor to ensure it is receiving power when the wiper switch is activated; a faulty motor may require replacement. Next, examine the wiper linkage, which connects the motor to the wiper arms, for any signs of damage or disconnection that could impede functionality. Additionally, test the wiper switch itself to confirm it is sending the correct signals to the motor. Lastly, don’t overlook the condition of the wiper blades, as worn-out blades can also lead to ineffective operation. By following this diagnostic approach, you can efficiently identify and resolve the issue with your windshield wipers.

What are the common problems that could cause the windshield wipers to stop working on a 2015 Mercedes-Benz E400?

When troubleshooting the windshield wipers on a 2015 Mercedes-Benz E400, it's essential to understand the common problems that could lead to their failure. One of the first things to check is the fuse; a blown fuse in the vehicle's fuse box can easily disrupt the wiper's operation, and replacing it is a straightforward fix. If the fuse is intact, the next likely culprit is the wiper motor itself, which may be faulty and require repair or replacement. Additionally, worn or damaged wiper blades can significantly affect performance, so inspecting and replacing them is a simple yet effective solution. Another potential issue is the wiper linkage, which connects the motor to the wiper arms; if this component is broken or damaged, it will prevent the wipers from moving correctly. Lastly, a malfunctioning wiper switch can also be responsible for the problem, necessitating inspection and possible replacement. By systematically addressing these common issues, you can effectively restore the functionality of your windshield wipers.

How urgent is it to repair the non-functioning windshield wipers on a 2015 Mercedes-Benz E400?

When dealing with non-functioning windshield wipers on your 2015 Mercedes-Benz E400, the urgency of repair cannot be overstated. First and foremost, safety is paramount; impaired visibility during inclement weather can lead to dangerous driving conditions, increasing the likelihood of accidents. Additionally, many jurisdictions mandate that vehicles must have operational windshield wipers, making it not just a safety issue but a legal one as well. Ignoring this problem can also result in further damage to the wiper system or even the windshield, leading to more extensive and costly repairs down the line. Lastly, having functional wipers enhances your overall driving experience, allowing you to navigate through rain or snow with confidence and comfort. Therefore, addressing the issue promptly is essential for your safety, legal compliance, and the longevity of your vehicle.

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