Scion FR-S Speedometer Isn't Working

Common Causes of a Malfunctioning Speedometer in Your Scion FR-S and How to Fix It

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Reviewed by
Aisha
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 Scion FR-S 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.

Troubleshooting Speedometer Issues in a Scion FR-S

When tackling speedometer issues in your Scion FR-S, it's essential to adopt a systematic diagnostic approach. Begin by inspecting the speedometer cables, ensuring they are securely connected and free from damage. This initial check can often reveal simple issues that are easy to fix. Next, connect to the vehicle's ECU to identify any potential faults; this step is crucial as it can highlight whether the speed sensor is malfunctioning. If you suspect the speed sensor, locate it beneath the vehicle and examine its condition. Additionally, if there are no Diagnostic Trouble Codes (DTCs) indicating problems with the CAN communication system, proceed to troubleshoot each system individually. Remember to turn off the ignition and allow the vehicle to rest for a minute before measuring the resistance of the CAN bus, as this ensures accurate readings. By following this structured approach, you can effectively diagnose and resolve speedometer issues, helping to maintain the performance and reliability of your Scion FR-S.

What to Check When the Speedometer Isn't Working in a Scion FR-S?

When your Scion FR-S speedometer stops working, it can be frustrating, but understanding the common problems can guide you in diagnosing the issue. One of the first components to check is the Vehicle Speed Sensor (VSS), as a malfunctioning VSS is often the primary reason for inaccurate readings or a complete failure of the speedometer. If the VSS appears to be functioning correctly, the next step is to inspect the speedometer itself, as internal faults can lead to display issues that may require repair or replacement. Additionally, consider the possibility of electrical problems within the vehicle, as these can disrupt the speedometer's operation. Given the complexity of modern automotive electrical systems, it may be beneficial to conduct a thorough inspection of the wiring and connections related to the speedometer. If these checks do not resolve the issue, seeking assistance from a qualified mechanic can provide a more in-depth diagnosis and help you understand the necessary repairs. By systematically addressing these common problems, you can effectively troubleshoot and potentially resolve the speedometer issue in your Scion FR-S.

Why is the Speedometer Not Working in a Scion FR-S?

When the speedometer in your Scion FR-S stops working, it’s crucial to address the issue promptly to avoid serious safety risks and potential vehicle damage. A malfunctioning speedometer can lead to inaccurate speed readings, which may result in speeding violations or dangerous driving situations. Additionally, if the vehicle speed sensor (VSS) is faulty, it can affect other systems like cruise control, further complicating your driving experience. Ignoring these symptoms can also trigger the Check Engine Light, indicating that there may be underlying electrical issues that could escalate if left unresolved. Therefore, it’s essential to diagnose the problem accurately by checking the VSS, speedometer, and related electrical components. Taking swift action not only ensures your safety on the road but also helps maintain the overall health of your vehicle, preventing more costly repairs down the line.

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Scion FR-S Speedometer Not Working: Causes & Solutions