Mercedes-Benz SLK250 Windshield Wipers Aren't Working

Common Causes of Non-Functioning Windshield Wipers on Your Mercedes-Benz SLK250 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 SLK250 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 SLK250 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 SLK250

When troubleshooting non-functional windshield wipers in a Mercedes-Benz SLK250, it's essential to adopt a systematic diagnostic approach. Begin by checking the windshield wiper fuse, as this is a straightforward task that can often resolve the issue quickly. If the fuse is intact, the next step is to inspect the wiper motor for any internal electrical faults, which may require replacement if found defective. Pay attention to the wiper operation; if they run continuously without being activated, this could indicate a malfunction within the wiper system that needs further investigation. Additionally, consider other potential causes such as worn-out wiper blades, misaligned wiper arms, or issues with the wiper switch and wiring. By following this methodical approach, you can effectively identify and address the problem, ensuring your windshield wipers function properly and safely. If you find yourself stuck at any point, don't hesitate to seek professional help to ensure a thorough diagnosis and repair.

What to Check When Windshield Wipers Aren't Working on a Mercedes-Benz SLK250?

When troubleshooting windshield wiper issues on a Mercedes-Benz SLK250, it's essential to consider several common problems that could be affecting their functionality. Start by checking the windshield wiper fuse, as a blown fuse is often the simplest and quickest fix. If the fuse is intact, inspect the rain sensor, which can malfunction and cause erratic wiper movement. Additionally, if the wipers are not operating correctly in intermittent mode, recalibrating them may resolve the issue, a task that typically takes around 15 minutes. Another potential culprit is the bonnet or hood latch; if it’s not properly engaged, it can prevent the wipers from functioning. Lastly, ensure that there is power at the fuse panel for the wiper-related fuses, as a lack of power could indicate a more significant electrical problem. By systematically checking these components, you can effectively diagnose and address the issues with your windshield wipers.

Why Are the Windshield Wipers Not Working on a Mercedes-Benz SLK250?

When the windshield wipers on your Mercedes-Benz SLK250 fail to operate, it is crucial to address the issue promptly to avoid potential safety hazards. Neglecting to troubleshoot the problem can lead to impaired visibility during rain or snow, significantly increasing the risk of accidents. Start by checking the windshield wiper fuse, as a blown fuse is a common and easily fixable issue that can be resolved at home. If the fuse is intact, inspect the wiper blades for wear and tear; old, brittle blades can seize up and fail to clear the windshield effectively. Additionally, consider the condition of the windshield washer system, as malfunctions here can also impact wiper performance. Be mindful of environmental factors such as ice or heavy snow, which can obstruct wiper function. By systematically diagnosing these issues, you can ensure your wipers are in optimal working condition, enhancing your safety on the road and preventing further damage to your vehicle.

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Mercedes-Benz SLK250 Wipers Not Working? Common Fixes