Mercedes-Benz S550e Windshield Wipers Aren't Working

Common Causes of Windshield Wiper Malfunctions in Your Mercedes-Benz S550e and How to Fix Them

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Reviewed by
Andrew Hajjar
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 Mercedes-Benz S550e 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 Mercedes-Benz S550e 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.

Troubleshooting Non-Functional Windshield Wipers in a Mercedes-Benz S550e

When faced with non-functional windshield wipers in your Mercedes-Benz S550e, start by checking the simplest potential issues before moving on to more complex diagnostics. Begin with the windshield wiper fuse, as a blown fuse is often the culprit and can be easily replaced. Next, inspect the wiper blades for wear and tear; if they appear cracked or brittle, replacing them may resolve the issue. Ensure that the hood is securely closed, as a malfunctioning hood switch can prevent the wipers from operating. If the washer function works but the wipers do not, this could indicate a problem with the wiper motor or wiring. Additionally, consider the age of your wipers; if they have seized, it may be time for a replacement. Finally, if these steps do not yield results, carefully inspect the wiper arm assembly and frame, as accessing these components may be necessary to diagnose more intricate issues with the wiper motor. By following this structured approach, you can effectively identify and address the problem with your windshield wipers.

What to Check When Windshield Wipers Aren't Working on a Mercedes-Benz S550e?

When troubleshooting windshield wiper issues on your Mercedes-Benz S550e, it's essential to understand the common problems that can arise. One frequent issue is a lack of windshield washer fluid, which can prevent the wipers from functioning effectively, even if they are moving. If the wipers are not moving at all, a blown fuse is often the culprit; checking the fuse box for the wiper fuse is a straightforward first step. If the fuse is intact, the wiper motor may be malfunctioning, requiring inspection for any visible damage or signs of wear. Additionally, the wiper switch can sometimes fail, leading to operational interruptions, so ensuring its proper function is crucial. Lastly, consider the mechanical components such as the wiper arms and lever mechanism, as these may need replacement if they are worn out. By addressing these common problems systematically, you can effectively diagnose and resolve the issues with your windshield wipers, ensuring they perform optimally in all weather conditions.

Why Are the Windshield Wipers Not Working on a Mercedes-Benz S550e?

When your Mercedes-Benz S550e's windshield wipers fail to operate, it is crucial to address the issue without delay. Neglecting malfunctioning wipers can lead to dangerous driving conditions, particularly during rain or adverse weather, where visibility is compromised. A faulty wiper motor or switch can prevent the wipers from functioning, while blown fuses may cut off power entirely. Additionally, worn-out wiper blades can hinder their effectiveness, causing them to seize and potentially scratch the windshield. Electrical issues can further complicate the situation, leading to more extensive damage if not resolved promptly. Therefore, it is essential to conduct a thorough inspection of these components to ensure your vehicle remains safe and operational. Taking immediate action not only protects your safety but also helps prevent costly repairs down the line.

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