Lexus LX570 Speedometer Isn't Working

Common Causes of a Malfunctioning Speedometer in Your Lexus LX570 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 Lexus LX570 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 Lexus LX570

When faced with speedometer issues in your Lexus LX570, it's essential to adopt a systematic diagnostic approach. Start by utilizing an OBDII scanner to check for any error codes, as this can provide immediate insights into potential malfunctions. If no codes are present, consider conducting a test drive to observe the speedometer's behavior in real-time. This can help you determine if the issue is intermittent or consistent. Next, inspect the Vehicle Speed Sensor (VSS), as a malfunction here is a common culprit; if necessary, repair or replace it. Additionally, examine the speedometer itself for any signs of failure, and address any electrical issues that may be affecting its performance. If you're still unable to pinpoint the problem, accessing the Engine Control Module (ECM) behind the glove box can offer further diagnostic opportunities. Remember, while some quick fixes like gently tapping the dashboard may provide temporary relief, a thorough investigation is key to ensuring a long-term solution. By following this structured approach, you can effectively troubleshoot and resolve speedometer issues in your Lexus LX570.

Troubleshooting Speedometer Issues in a Lexus LX570

When dealing with speedometer issues in a Lexus LX570, it's essential to understand the common problems that may arise. One of the primary culprits is the Vehicle Speed Sensor (VSS), which can malfunction and lead to inaccurate speed readings. Additionally, the speedometer itself may experience internal failures, resulting in erratic behavior or complete inoperability. Electrical issues, such as faulty wiring or blown fuses, can also disrupt the speedometer's functionality. To diagnose these problems, start by checking the VSS for proper operation, as it plays a crucial role in relaying speed data to the speedometer. Next, inspect the speedometer for any visible signs of damage or malfunction. If these components appear to be functioning correctly, it may be necessary to investigate the vehicle's electrical system for any underlying issues. By understanding these common failure modes, you can take informed steps toward troubleshooting and potentially resolving speedometer problems in your Lexus LX570.

Why is the Speedometer Not Working in a Lexus LX570?

When the speedometer in your Lexus LX570 stops functioning, it’s crucial to address the issue without delay. Ignoring a malfunctioning speedometer can lead to significant safety risks, such as inaccurate speed readings that may result in speeding or difficulty maintaining safe driving speeds. Additionally, a faulty vehicle speed sensor (VSS) can disrupt the cruise control system, making it challenging to maintain a consistent speed on the highway. This not only affects your driving experience but can also lead to increased wear on your vehicle's components. Furthermore, a malfunctioning VSS may trigger warning lights, such as the ABS light, indicating potential issues with your braking system. It’s also important to check for blown fuses related to the speedometer and ABS, as these can be simple fixes that restore functionality. By diagnosing and resolving the speedometer issue promptly, you can ensure your Lexus LX570 operates safely and efficiently, preventing further complications down the road.

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Lexus LX570 Speedometer Not Working? Causes & Solutions