my Toyota Highlander Fourth Generation (2020-present) ABS light is on what should I do

Solution

1. Preparation

• Gather necessary tools and parts.
• Park the vehicle on a level surface and engage the parking brake.
• Disconnect the battery to prevent electrical short circuits.

2. Inspect and Clean Wheel Speed Sensors

• Remove the wheel covers or tires as necessary to access the wheel speed sensors.
• Clean each wheel speed sensor using a soft cloth and brake cleaner to remove dirt and debris.
• Reconnect any loose or damaged connectors and ensure a secure fit.

3. Check Brake Fluid Level

• Locate the brake fluid reservoir and check the fluid level.
• If low, top off with the manufacturer-recommended brake fluid type (DOT 3 or DOT 4).
• Inspect for any leaks in the brake lines or around the master cylinder.

4. Test ABS Module and Wiring

• Reconnect the battery.
• Use a multimeter to test the voltage and ground at the ABS module connectors.
• Replace any blown fuses related to the ABS system.

5. Clear Error Codes

• After resolving any issues, use the OBD-II scanner to clear the ABS fault codes.
• Perform a brake system test to ensure the ABS light is no longer illuminated.