How to Reset a VSC Light on a Highlander

If you’re wondering how to reset a VSC light on a Highlander, we’ve got you covered with a simple guide to help you through the process.

Key Takeaways:

  • Resetting the VSC light on a Highlander involves cleaning the wheel speed sensors, jumping TC and CG pins on the OBD2 connector, and pressing and releasing the brake pedal.
  • After completing the reset process, the speedometer should display “VSC DIAG OK” and the warning lights should be cleared.
  • If the VSC light stays on or other warning lights appear, it’s recommended to seek professional assistance for further diagnosis.

Cleaning the Wheel Speed Sensors

Before attempting to reset the VSC light, it’s important to start by cleaning the wheel speed sensors. These sensors are responsible for monitoring the rotational speed of each wheel and providing crucial data to the vehicle’s stability control system. Over time, dirt, debris, and brake dust can accumulate on the sensors, causing them to malfunction and trigger the VSC light.

To clean the wheel speed sensors, you’ll first need to locate them. They are typically mounted near the brake rotors or inside the wheel hubs. Once you’ve found the sensors, remove them carefully using a wrench or socket.

Next, use a clean rag to wipe off any dirt or grime from the sensors. Be gentle and thorough, ensuring that all surfaces are clean and free from debris. If necessary, you can also use a mild cleaner or brake cleaner spray to remove stubborn dirt.

After cleaning the sensors, carefully reinstall them in the same position. Ensure that they are securely tightened to prevent any issues. Once the sensors are back in place, you can proceed with the next steps to reset the VSC light on your Highlander.

Steps to Reset VSC Light
Clean wheel speed sensors
Jump TC and CG pins on OBD2 connector
Press and release brake pedal 8 times
Verify “VSC DIAG OK” on speedometer
Remove jumper from OBD2 connector
Check for cleared warning lights

Jumping TC and CG Pins on the OBD2 Connector

Once the wheel speed sensors are cleaned, the next step is to jump the TC and CG pins on the OBD2 connector. This process allows you to access the vehicle’s diagnostic system and reset the VSC light on your Highlander.

To jump the TC and CG pins, you will need a paperclip or a short piece of wire. Locate the OBD2 connector, usually located under the dashboard on the driver’s side. Insert one end of the paperclip or wire into the TC pin and the other end into the CG pin. Make sure the connections are secure.

Tip: It’s important to be cautious when working with the OBD2 connector. Make sure the ignition is off before attempting to jump the pins.

Once you have connected the TC and CG pins, you can proceed to the next step in resetting the VSC light. Remember to follow the instructions carefully and ensure that the connections are properly secured.

Table: OBD2 Connector Pin Locations

Pin NumberPin Name
TCTraction Control
CGChassis Ground

After you have successfully jumped the TC and CG pins, you can proceed to the next section of the VSC light reset process. Remember to remove the jumper from the OBD2 connector before moving forward. The jumper is no longer needed once the diagnostic system has been accessed.

Note that if you are not confident in performing these steps yourself or if the VSC light stays on or other warning lights appear, it is recommended to seek professional assistance. A qualified technician will be able to diagnose and resolve any issues with your Highlander’s VSC system.

Pressing and Releasing the Brake Pedal

After jumping the TC and CG pins, it’s time to turn on the ignition and press and release the brake pedal. This step is crucial in the VSC light reset process. Here’s what you need to do:

  1. Ensure your Highlander is in park or neutral, with the parking brake engaged.
  2. Insert the key into the ignition and turn it to the “on” position. Do not start the engine.
  3. With your foot off the accelerator pedal, press and release the brake pedal 8 times within a span of 3 seconds.
  4. After the 8th press, the VSC system will perform a self-check, and you may notice the brake pedal pulsating or the ABS motor activating. This is normal.

Once the self-check is complete, there will be a slight delay before the speedometer displays “VSC DIAG OK.” This indicates that the VSC light has been successfully reset. If you don’t see this message, wait for a few more seconds, as sometimes it takes a bit longer for the reset to complete.

Now that you have completed the brake pedal step, it’s time to remove the jumper from the OBD2 connector. Simply disconnect the paperclip or jumper wire that you used to jump the TC and CG pins. Once the jumper is removed, the warning lights should be cleared, and the VSC light should be reset. You can verify this by starting your Highlander and confirming that the VSC light is no longer illuminated.

Professional Assistance

If the VSC light stays on or other warning lights illuminate even after completing the reset process, it is recommended to get your Highlander checked by a professional. They will have the necessary tools and expertise to diagnose and resolve any underlying issues that may be causing the light to persist. Remember, your safety on the road is paramount, and it’s always better to seek professional assistance if you’re unsure or unable to resolve the problem yourself.

Displaying “VSC DIAG OK”

After a slight delay, the speedometer should display “VSC DIAG OK” if the reset process was successful. This message indicates that the VSC light has been reset and any related issues have been resolved. It’s important to note that the specific timing of when the message appears may vary, so be patient and allow a few moments for the system to complete the reset.

In case the speedometer does not display “VSC DIAG OK” after the reset process, try repeating the steps again to ensure they were performed correctly. If the message still doesn’t appear, it is recommended to seek professional assistance to further troubleshoot the issue.

Important Tips:

  • Make sure you have followed all the previous steps correctly, including cleaning the wheel speed sensors and jumping the TC and CG pins on the OBD2 connector.
  • Check that your Highlander’s battery is in good condition, as a weak battery can hinder the reset process.

“The VSC DIAG OK message on the speedometer indicates successful completion of the VSC light reset.”

Remember that resetting the VSC light is just the first step in addressing any underlying issues. It’s always a good idea to have your Highlander checked by a professional if the VSC light stays on or if any other warning lights appear. They can provide a comprehensive diagnosis and ensure that your vehicle is in optimal condition.

StepDescription
1Clean the wheel speed sensors by removing and cleaning them with a rag
2Jump TC and CG pins on the OBD2 connector using a paperclip
3Turn on the ignition and press and release the brake pedal 8 times
4The speedometer should display “VSC DIAG OK” after a slight delay if the reset process was successful
5Remove the jumper from the OBD2 connector
6The warning lights should be cleared, and the VSC light should be reset

Final Steps and Professional Assistance

Once the “VSC DIAG OK” message is displayed, you can remove the jumper from the OBD2 connector, and the warning lights should be cleared. However, if the VSC light remains on or other warning lights illuminate, it’s recommended to seek professional assistance.

Professional assistance is crucial in cases where the VSC light does not reset or when additional warning lights appear. Trained technicians have the expertise and specialized diagnostic tools to identify and resolve potential issues with your Highlander’s VSC system. They can perform a thorough inspection, diagnose the problem accurately, and provide the necessary repairs or adjustments.

By seeking professional assistance, you can ensure that the VSC system in your Highlander is properly diagnosed and reset, giving you peace of mind on the road. Ignoring persistent warning lights may compromise the safety and performance of your vehicle, so it’s essential to address any issues promptly.

Remember, attempting to reset the VSC light yourself is only recommended if you are confident in your automotive knowledge and have access to the necessary tools. Otherwise, it’s best to leave it to the experts who can efficiently resolve any problems you may encounter.

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