2020 Mercedes-Benz GLE450 Speedometer Isn't Working

Fix speedometer issues in your 2020 Mercedes-Benz GLE450.

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Reviewed by
Devin Cabugcal
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 Mercedes-Benz GLE450 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 steps should I take to diagnose the non-functioning speedometer in my 2020 Mercedes-Benz GLE450?

To effectively diagnose the non-functioning speedometer in your 2020 Mercedes-Benz GLE450, begin with a systematic approach that prioritizes simpler solutions before delving into more complex diagnostics. Start by checking the fuse associated with the speedometer in the fuse box, as a blown fuse is a common and easily fixable issue. If the fuse is intact, proceed to inspect the speed sensor, which is crucial for relaying speed data to the speedometer; any visible damage or malfunction here could be the culprit. Next, utilize an OBD-II scanner to scan for error codes that may indicate specific problems with the speedometer or speed sensor, providing valuable insights into the issue. After that, examine the wiring connections to both the speedometer and speed sensor, ensuring they are secure and free from corrosion, as poor connections can disrupt the signal. If all these components check out, the problem may lie within the speedometer cluster itself, which may require professional testing or repair. By following this structured diagnostic approach, you can efficiently identify and address the underlying cause of your speedometer's malfunction.

What are the common problems that could cause the speedometer to stop working in a 2020 Mercedes-Benz GLE450?

When the speedometer in your 2020 Mercedes-Benz GLE450 stops working, it can be frustrating, but understanding the common problems can guide you in diagnosing the issue. One of the primary culprits is a faulty speed sensor, which is responsible for relaying speed data to the speedometer. If this sensor malfunctions, you may experience inaccurate readings or a complete failure of the speedometer. Additionally, issues with the instrument cluster itself can disrupt the speedometer's functionality, as this is where the speedometer is housed. Electrical problems, such as blown fuses or damaged wiring, can also interfere with the speedometer's operation, making it essential to check the vehicle's electrical system. Furthermore, a malfunctioning vehicle speed sensor can lead to similar issues, as it plays a crucial role in providing speed information. Lastly, software glitches within the vehicle's computer system can occasionally cause the speedometer to misbehave. If you encounter these problems, it is advisable to consult a qualified mechanic or dealership to ensure accurate diagnosis and repair, allowing your speedometer to function correctly once again.

How urgent is it to address the non-functioning speedometer in a 2020 Mercedes-Benz GLE450?

Addressing a non-functioning speedometer in your 2020 Mercedes-Benz GLE450 is not just a matter of convenience; it is a pressing issue that requires immediate attention. The inability to accurately monitor your speed can lead to unintentional violations of speed limits, resulting in fines or even more severe legal repercussions. Beyond legal concerns, the safety implications are significant; without a functioning speedometer, you may struggle to maintain safe driving speeds, especially in varying road conditions, which can increase the risk of accidents. Furthermore, a malfunctioning speedometer can adversely affect your vehicle's performance, potentially leading to decreased fuel efficiency and engine management issues. Lastly, neglecting this problem can diminish your vehicle's resale value, as prospective buyers are often wary of unresolved mechanical issues. Therefore, it is crucial to prioritize the repair of your speedometer to ensure compliance with the law, maintain safety on the road, optimize vehicle performance, and protect your investment.

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