2020 Audi A4 Speedometer Isn't Working

Troubleshooting Common Issues with the Speedometer in Your 2020 Audi A4 and How to Fix Them

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Reviewed by
Andrew Hajjar
Written by RepairPal Car Genius
Updated January 14, 2025
0%
35% chance it's the
Vehicle Speed Sensor (VSS)
0%
28% chance it's the
Speedometer
0%
23% chance it's the
Electrical Issue
0%
14% chance it's
Something else
The most common reasons a 2020 Audi A4 speedometer isn't working are the vehicle speed sensor (VSS), a faulty speedometer, or an electrical issue.
  • Vehicle Speed Sensor (VSS): A faulty vehicle speed sensor can result in inaccurate speed readings and erratic transmission shifting.
  • Speedometer: A faulty speed sensor or a broken connection in the speedometer circuit can result in inaccurate speed readings.
  • Electrical Issue: A blown fuse or a short circuit in the wiring can cause various electrical issues in the vehicle's 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.

What are the initial diagnostic steps to take when the speedometer of a 2020 Audi A4 isn't working?

When faced with a malfunctioning speedometer in a 2020 Audi A4, it's essential to adopt a systematic diagnostic approach to identify the root cause effectively. Begin by checking the fuse associated with the speedometer, as a blown fuse can often be the simplest explanation for the issue. If the fuse is intact, the next step is to inspect the speed sensor, which plays a crucial role in relaying speed data to the speedometer; any visible damage or malfunction here could be the culprit. Utilizing an OBD-II scanner to scan for error codes can provide valuable insights into any underlying issues related to the speedometer or the speed sensor system. Additionally, examining the wiring and connections for any signs of wear, such as loose connections or frayed wires, is vital, as these can disrupt the signal. Finally, testing the speedometer cluster itself will help determine if the problem lies within the cluster or elsewhere in the system. By following these steps, you can effectively diagnose and address the speedometer issue, ensuring your Audi A4 is back to optimal performance.

What are the common problems that could cause the speedometer to stop working in a 2020 Audi A4?

When addressing the issue of a malfunctioning speedometer in a 2020 Audi A4, it's important to recognize the common problems that may be causing the failure. A primary suspect is often the vehicle speed sensor, which, if faulty, can result in incorrect speed readings or a complete stop in functionality. Another potential issue could be a broken speedometer cable, which is essential for relaying speed information to the dashboard. Additionally, problems within the instrument cluster, such as blown fuses or poor connections, can hinder the speedometer's performance. Electrical issues, including wiring faults or blown fuses, can also disrupt the speedometer's operation. Lastly, the speedometer gauge itself may be defective, requiring replacement to restore proper function. For accurate speed readings and reliable performance, it is recommended to consult a qualified mechanic to diagnose and address these issues effectively.

How urgent is it to repair the non-functioning speedometer on a 2020 Audi A4?

Repairing a non-functioning speedometer on a 2020 Audi A4 is an urgent matter that should not be overlooked. The speedometer is not just a gauge; it plays a critical role in ensuring safe driving by allowing you to monitor your speed accurately. Without it, you risk violating traffic laws, which can lead to legal repercussions. Moreover, driving without a functioning speedometer can create hazardous situations, as you may inadvertently exceed speed limits or drive too slowly, both of which can endanger you and other road users. Additionally, a malfunctioning speedometer may signal deeper issues within your vehicle's electronic systems, potentially leading to more significant and costly repairs if left unaddressed. Lastly, if you plan to sell your Audi A4 in the future, a broken speedometer can significantly diminish its resale value, as prospective buyers are likely to be wary of unresolved mechanical problems. Therefore, addressing this issue promptly is essential for your safety, legal compliance, and the overall health of your vehicle.

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2020 Audi A4 Speedometer Not Working: Causes & Repairs