Audi A4 Windshield Wipers Aren't Working

Common Causes of Non-Functioning Windshield Wipers in Your Audi A4 and How to Fix Them

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Reviewed by
Aisha
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 Audi A4 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 Audi A4 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.

Inability to control the windshield wipers comes in several forms, and they are all indicative of windshield wiper switch failure. The windshield wipers may not work in all settings, may not turn on when requested, may not move to their parked position when turning off, or the washer pumps may or may not run at random. This is a general list of symptoms, but failure of anything the windshield wiper switch controls will indicate the need for testing the windshield wiper and washer switch.

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 an Audi A4

When troubleshooting non-functional windshield wipers in an Audi A4, start with the simplest solutions before moving on to more complex diagnostics. Begin by checking the wiper control switch, as a faulty switch can prevent the wipers from operating. If the switch appears to be functioning correctly, inspect the wiper motor, which is crucial for the movement of the wipers. A malfunctioning motor may need replacement. Additionally, consider intermittent wiper faults that could stem from issues with the control stalk or related components like relays and the ECU. If the wipers are moving slowly, this may indicate a problem with the motor's performance or the wiper system itself. Lastly, if the wipers do not park automatically or only operate on one setting, further investigation into the wiper system is necessary. Utilizing diagnostic tools such as VCDS can provide deeper insights into the specific issues affecting your wipers, allowing for a more targeted repair approach. By following this methodical diagnostic approach, you can effectively identify and resolve the problems with your Audi A4's windshield wipers.

What to Check When Audi A4 Windshield Wipers Aren't Working?

When your Audi A4 windshield wipers aren't functioning properly, it's important to identify and address the common problems that may be at play. Begin by checking the wiper motor, as this is frequently the source of the issue; a malfunctioning motor can prevent the wipers from operating altogether. If the motor seems to be in good condition, the next area to investigate is the windshield wiper switch, which can fail and disrupt the wipers' functionality. In cases where only one wiper is moving, inspect the pivot nut that connects the wiper arm to the transmission stem, as it may be loose or damaged and require adjustment. Additionally, ensure that all electrical connections are secure and that the wiper motor is receiving adequate battery voltage and signal wire voltage. If the wipers are not parking as they should, this could signal a more complex problem within the wiper system that needs further examination. By carefully checking these components, you can effectively troubleshoot and potentially fix the issues with your Audi A4 windshield wipers.

Why Are the Windshield Wipers Not Working on an Audi A4?

When your Audi A4's windshield wipers fail to operate, it’s crucial to act swiftly, as neglecting this issue can lead to dangerous driving conditions, particularly in inclement weather. A malfunctioning wiper system not only impairs visibility but can also indicate deeper electrical or mechanical problems that, if left unresolved, may result in costly repairs. Common culprits include a faulty wiper motor or a malfunctioning switch, both of which can be diagnosed with basic tools and a little know-how. If you notice warning messages like "Windshield wipers defective" or experience intermittent wiper function, these are clear signs that immediate attention is required. By addressing these symptoms early, you can ensure your vehicle remains safe and functional, preventing further damage and enhancing your DIY repair skills.

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Audi A4 Windshield Wipers Not Working: Causes & Repairs