2005 Mercedes-Benz ML350 Windshield Wipers Aren't Working

Common Causes of Windshield Wiper Malfunctions in Your 2005 Mercedes-Benz ML350 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 2005 Mercedes-Benz ML350 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 2005 Mercedes-Benz ML350 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 are the initial diagnostic steps to take when the windshield wipers on a 2005 Mercedes-Benz ML350 aren't working?

When faced with non-functioning windshield wipers on a 2005 Mercedes-Benz ML350, it's essential to adopt a methodical diagnostic approach. Begin by checking the fuse associated with the wipers, as a blown fuse is a common and easily rectifiable issue. If the fuse is intact, proceed to inspect the wiper motor for any signs of malfunction, as a faulty motor can prevent the wipers from operating. Next, examine the wiper linkage, which connects the motor to the wiper arms; any damage or disconnection here can lead to wiper failure. Additionally, assess the wiper switch, as a defective switch may hinder the wipers from functioning properly. Finally, don’t overlook the condition of the wiper blades themselves; worn or damaged blades can also contribute to the perception that the wipers are not working. By following this structured approach, you can effectively diagnose and address the issue with your windshield wipers, ensuring safer driving conditions.

What are the common problems that could cause the windshield wipers to stop working on a 2005 Mercedes-Benz ML350?

When dealing with non-functioning windshield wipers on a 2005 Mercedes-Benz ML350, it's essential to understand the common problems that could be at play. One of the first things to check is the fuse; a blown fuse in the vehicle's fuse box is a frequent culprit and can be easily replaced. If the fuse is intact, the next step is to inspect the wiper motor itself, as a malfunctioning motor may require replacement to restore functionality. Additionally, worn or damaged wiper blades can significantly impact performance, so replacing them is a straightforward solution that can often resolve the issue. It's also important to examine the wiper linkage, which connects the motor to the wiper arms; any breaks or damage here can prevent the wipers from moving correctly. Lastly, a faulty wiper switch can disrupt the operation of the wipers, and replacing this component may be necessary to ensure proper function. By systematically addressing these potential issues, you can effectively troubleshoot and fix the problem with your windshield wipers.

How urgent is it to repair the non-functioning windshield wipers on a 2005 Mercedes-Benz ML350?

When dealing with a non-functioning windshield wiper system on a 2005 Mercedes-Benz ML350, 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 have laws requiring functional windshield wipers, and neglecting this repair could result in fines or legal repercussions. Beyond safety and legality, delaying the repair can exacerbate the problem, potentially causing further damage to the wiper mechanism or even the windshield itself, which could lead to more costly repairs down the line. Lastly, having reliable windshield wipers enhances the overall driving experience, providing peace of mind and comfort for both the driver and passengers. Therefore, addressing this issue promptly is essential for maintaining safety, compliance, and convenience on the road.

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2005 Mercedes-Benz ML350 Wiper Issues & Repairs | RepairPal