2013 Scion TC Speedometer Isn't Working

Common Causes of Speedometer Malfunctions in Your 2013 Scion tC and How to Fix Them

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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 2013 Scion tC 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 behavior.
  • 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.
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 steps to diagnose a non-functioning speedometer in a 2013 Scion tC?

To effectively diagnose a non-functioning speedometer in your 2013 Scion tC, start with a systematic approach that prioritizes simpler checks before delving into more complex diagnostics. Begin by checking if the check engine light is illuminated, as this can provide immediate clues about potential issues with the speed sensor or speedometer itself. Next, investigate common culprits such as a faulty Vehicle Speed Sensor (VSS) or any electrical problems that may be affecting the speedometer's performance. Conduct a thorough visual inspection of the VSS and its wiring, looking for any signs of damage or disconnection. Utilize a multimeter to test for continuity in the wiring, ensuring that there are no breaks in the circuit. Additionally, observe the speedometer's behavior when you start the vehicle; any erratic movement can indicate underlying issues. Finally, consider scanning the vehicle's computer for diagnostic trouble codes that may point to specific problems. By following this structured diagnostic approach, you can efficiently identify the root cause of the speedometer malfunction and take appropriate action to resolve it.

What are the common causes for a malfunctioning speedometer in a 2013 Scion tC?

When troubleshooting a malfunctioning speedometer in a 2013 Scion tC, it's essential to consider several common problems that could be affecting its performance. One of the primary suspects is the vehicle speed sensor (VSS), which is responsible for relaying speed information to the speedometer. If the VSS is faulty, it can lead to inaccurate or no speed readings. Additionally, the speedometer itself may be defective, which can also result in erratic behavior. Electrical issues, such as damaged wiring or poor connections, can disrupt the signal between the sensor and the speedometer, causing malfunctions. Furthermore, problems with the sensor's harness or connectors can lead to inconsistent readings. Lastly, a malfunctioning Engine Control Module (ECM) may interfere with the speedometer's operation, making it crucial to inspect these components thoroughly during your DIY diagnosis. By understanding these common causes, you can effectively narrow down the issue and take the necessary steps to restore your speedometer's functionality.

How urgent is it to fix the speedometer in a 2013 Scion tC for safety?

Fixing the speedometer in a 2013 Scion tC is not just a matter of convenience; it is a critical safety concern that should be addressed without delay. A malfunctioning speedometer can lead to inaccurate speed readings, which may cause drivers to exceed speed limits unknowingly, increasing the risk of accidents and legal repercussions. Moreover, the speedometer is integral to various vehicle systems, including transmission shifts and anti-lock braking systems (ABS), meaning that neglecting this issue could lead to further mechanical problems and costly repairs down the line. For DIY enthusiasts, understanding the urgency of this repair is essential, as timely action can prevent safety hazards and ensure that the vehicle operates correctly. Therefore, if you notice any irregularities with your speedometer, it is crucial to diagnose and fix the issue promptly to maintain safe driving practices and protect yourself and others on the road.

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