BMW 335i Windshield Wipers Aren't Working

Common Causes of Non-Functioning Windshield Wipers on Your BMW 335i and How to Fix Them

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Reviewed by
Bo Fader
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 BMW 335i 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 BMW 335i 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 BMW 335i

When faced with non-functional windshield wipers in your BMW 335i, start by assessing the simplest potential issues before delving into more complex diagnostics. Begin by inspecting the wiper assembly for any blockages or debris that could impede movement. If the wipers are sluggish or making unusual noises, this could indicate a problem with the wiper motor. Activate the wipers and listen for any humming or buzzing sounds; the absence of these noises may suggest that the motor is malfunctioning. If you suspect the motor needs replacement, it’s advisable to consult a mechanic for testing and repair, as this can be a more intricate task. Additionally, familiarize yourself with the operational features of your wipers, such as the speed settings and rain sensor sensitivity, to ensure they are correctly adjusted. By following this structured approach, you can effectively diagnose and potentially resolve the issues with your windshield wipers, ensuring safer driving conditions.

What to Check When Windshield Wipers Aren't Working on a BMW 335i?

When your BMW 335i's windshield wipers fail to operate, it can be frustrating, but understanding the common problems can help you troubleshoot effectively. Start by examining the wiper motor, as a malfunction here is often the primary reason for wiper failure. Next, check the wiper switch; if it’s faulty, it may not send the necessary signals to the motor. Don’t forget to inspect the fuses related to the wiper system; a blown fuse can easily disrupt functionality. Additionally, look at the wiring for any signs of damage or fraying, which can impede electrical flow. If your vehicle has a rain detector, ensure it’s functioning properly, especially if the windshield has been replaced recently, as improper installation can lead to issues. For a more thorough diagnosis, consider performing electrical tests on the motor to check for voltage when the switch is activated. If the wipers work intermittently, this could indicate a deeper electrical issue that may require professional assistance. By systematically checking these components, you can effectively identify and resolve the problem with your windshield wipers.

Why Are the Windshield Wipers Not Working on a BMW 335i?

When the windshield wipers on your BMW 335i fail to operate, it is crucial to address the issue promptly to ensure your safety on the road. Non-functioning wipers can severely impair visibility during rain or adverse weather conditions, increasing the risk of accidents. Common culprits include a malfunctioning wiper motor, which may be due to a broken gear box, or a faulty wiper switch that fails to send the necessary signals for operation. Additionally, if the wiper motor is not receiving power, it could indicate a wiring issue or blown fuses. Ignoring these symptoms not only compromises your safety but can also lead to more complex and costly repairs down the line. Therefore, it is advisable to diagnose and resolve any wiper issues as soon as they arise, ensuring that your vehicle remains safe and functional.

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