what does the VSC light mean on my Toyota Highlander XU70 (2020-Present)

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative battery terminal to prevent electrical shorts.
• Allow the vehicle to cool if it has been running.

2. Inspect Wheel Speed Sensors

• Locate each wheel speed sensor (usually near the brake assembly).
• Remove any debris or dirt that may obstruct the sensor's operation.
• If damaged, replace the sensors using a socket set.
  • Tools Required: Socket set, torque wrench.
  • Safety Warnings: Ensure the vehicle is on a flat surface and secured with jack stands if lifted.

3. Check and Replace Brake Fluid

• Check the brake fluid reservoir for low fluid levels.
• If low, top off with the manufacturer-recommended brake fluid (DOT 3/4).
• If fluid is contaminated, flush the brake system and replace with fresh fluid.

4. Inspect and Repair Wiring

• Examine wiring harnesses related to the ABS and VSC systems for any frays or breaks.
• Repair or replace any damaged wiring.
• Clean and secure all electrical connections.

5. Clear Error Codes

• Reconnect the negative battery terminal.
• Use the OBD-II scanner to clear any stored error codes.
• Conduct a test drive to monitor for reoccurrence of the VSC light.