Mercedes-Benz SL600 Windshield Wipers Aren't Working

Common Causes of Windshield Wiper Malfunctions in Your Mercedes-Benz SL600 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 Mercedes-Benz SL600 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 SL600 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 SL600

When troubleshooting non-functional windshield wipers in a Mercedes-Benz SL600, it's essential to adopt a systematic diagnostic approach. Begin by checking the windshield wiper fuse, as a blown fuse is often the simplest and most common issue. If the fuse is intact, inspect the hood closure switch, which can prevent the wipers from operating if it malfunctions. Next, test the washer function; if the washer sprays but the wipers remain still, this may indicate a problem with the wiper motor or its wiring. Additionally, assess the condition of the wiper blades themselves—look for signs of wear such as cracks or ineffective wiping, which can compromise visibility. If the wipers are not moving at all, consider potential causes like a faulty wiper motor or issues with the wiper linkage. Lastly, if the wipers are operational but not clearing the windshield effectively, check for misalignment or dirt on the blades and windshield. By following this structured approach, you can efficiently diagnose and resolve the issues with your windshield wipers, ensuring safe driving conditions.

What to Check When Windshield Wipers Aren't Working on a Mercedes-Benz SL600?

When troubleshooting windshield wiper issues on a Mercedes-Benz SL600, it's essential to consider several common problems that could be affecting their performance. Start by examining the wiper motor, as it is often the primary reason for wiper failure. If the motor is functioning, the next step is to inspect the wiper switch, which can sometimes malfunction and disrupt the wiper operation. Additionally, if the wipers are behaving erratically, a defective rain sensor may be to blame, particularly in intermittent mode. Calibration issues can also lead to erratic movement, so recalibrating the wipers might resolve the problem. Don't forget to check the hood sensor, as a malfunction here can prevent the wipers from working altogether. Ensuring that there is power at the fuse panel and that the wiper fuses are intact is crucial, as blown fuses can halt wiper function. Lastly, inspect the wiper blades for wear and tear, as well as the alignment of the wiper arms, since these factors can affect the wipers' ability to clear the windshield effectively. By methodically addressing these potential issues, you can effectively diagnose and resolve the problems with your windshield wipers.

Why Are the Windshield Wipers Not Working on a Mercedes-Benz SL600?

When the windshield wipers on your Mercedes-Benz SL600 fail to operate, it is crucial to address the issue without delay. Ignoring malfunctioning wipers can lead to dangerous driving conditions, particularly in inclement weather where visibility is compromised. The underlying causes, such as defective sensors, a broken wiper motor, or electrical problems, can escalate if not resolved promptly, potentially resulting in costly repairs. Additionally, worn-out wiper blades can scratch the windshield, leading to further damage that may require replacement. Mechanical obstructions like ice or debris can also hinder wiper function, posing immediate safety risks. Therefore, it is essential to diagnose and rectify the problem as soon as possible to ensure your vehicle remains safe and functional on the road.

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