why does my Toyota RAV4 XA50 (2019-2024) traction control light stay on

Solution

1. Preparation

• Gather tools and parts needed for the repair.
• Ensure the vehicle is parked on a level surface and securely supported on jack stands if needed.

2. Scan and Record Error Codes

• Use an OBD-II scanner to read and document any stored error codes.
• Clear the codes and note if the traction control light reactivates.

3. Inspect and Clean Wheel Speed Sensors

• Locate each wheel speed sensor (usually mounted near the brake rotor).
• Disconnect the electrical connector from each sensor.
• Clean the sensors and their mounting areas with brake cleaner to remove any debris.
• Reconnect the sensors securely.

4. Check Brake Fluid Level

• Open the hood and locate the brake fluid reservoir.
• Check the fluid level; if low, top off with the appropriate brake fluid (DOT 3 or DOT 4 as specified in the owner’s manual).
• Inspect for leaks in the brake lines.

5. Inspect ABS Control Module

• Locate the ABS control module, usually near the master cylinder.
• Disconnect the wiring harness and inspect for corrosion or loose connections.
• Clean the terminals with electrical contact cleaner and reconnect.

6. Test Brake Pedal Switch

• Locate the brake pedal switch.
• Ensure it is properly aligned and functioning; test continuity using a multimeter.
• Replace the switch if it is found to be faulty.