2017 Mercedes-Benz E43 AMG Speedometer Isn't Working

Fix speedometer issues in your 2017 Mercedes-Benz E43 AMG

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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 2017 Mercedes-Benz E43 AMG 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 2017 Mercedes-Benz E43 AMG is not functioning?

When faced with a non-functioning speedometer in a 2017 Mercedes-Benz E43 AMG, it's essential to adopt a systematic diagnostic approach. Start by checking the fuse box for any blown fuses related to the instrument cluster, as this is a straightforward fix that can often resolve the issue. Next, inspect the speed sensor, which is crucial for relaying speed data; any visible damage or signs of malfunction here should be addressed. Utilizing a diagnostic scanner to check for error codes can provide deeper insights into the problem, helping to identify specific faults within the system. Additionally, examine the wiring harness connected to the speedometer and instrument cluster for loose connections or frayed wires, as these can disrupt signal transmission. Finally, conducting a diagnostic test on the instrument cluster itself can confirm whether all components are functioning correctly. By following these steps, you can effectively narrow down the cause of the speedometer malfunction and take the necessary actions to restore its functionality.

What are the common problems that could cause the speedometer to stop working in a 2017 Mercedes-Benz E43 AMG?

When troubleshooting a non-functioning speedometer in a 2017 Mercedes-Benz E43 AMG, it's essential to consider several common problems that could be at play. A faulty speed sensor is often the primary culprit, as it directly affects the accuracy of speed readings. Additionally, issues with the instrument cluster itself can lead to malfunctions, rendering the speedometer ineffective. Electrical problems, such as blown fuses or damaged wiring, can also disrupt the speedometer's operation, making it crucial to inspect the vehicle's electrical system. Furthermore, a malfunctioning vehicle speed sensor can contribute to the failure of the speedometer, as it plays a vital role in relaying speed information. Lastly, software glitches within the vehicle's computer system may impact the speedometer's functionality, necessitating a thorough diagnostic check. By understanding these potential issues, DIY enthusiasts can better assess the situation and determine whether professional assistance is needed for repairs.

How urgent is it to repair the non-functioning speedometer in a 2017 Mercedes-Benz E43 AMG?

When dealing with a non-functioning speedometer in your 2017 Mercedes-Benz E43 AMG, it is crucial to act swiftly. The urgency of this repair stems from several significant factors. Firstly, a malfunctioning speedometer can lead to legal complications, as it is essential for adhering to speed limits; without it, you risk unknowingly exceeding them and facing fines. Moreover, your safety is at stake; accurate speed readings are vital for maintaining control of your vehicle, especially in unpredictable driving conditions. Additionally, a faulty speedometer may signal underlying mechanical issues that could compromise your car's overall performance, potentially resulting in more extensive and expensive repairs if left unaddressed. Lastly, timely repairs are essential for preserving your vehicle's resale value, as prospective buyers are often wary of cars with unresolved maintenance issues. Therefore, prioritizing the repair of your speedometer is not just a matter of convenience but a necessary step to ensure legal compliance, enhance safety, maintain vehicle performance, and protect your investment.

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