what causes the ABS light to stay on in my Ford Mustang S650 (2024-Present)

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the vehicle battery to ensure safety.
• Ensure the vehicle is parked on a level surface with the ignition off.

2. Scan for Error Codes

• Use an OBD-II scanner to retrieve ABS-related error codes.
• Document the codes for troubleshooting and future reference.

3. Inspect Wheel Speed Sensors

• Locate the wheel speed sensors at each wheel hub.
• Remove any debris or obstructions around the sensors.
• Use a multimeter to check for proper voltage output while spinning the wheel.

4. Examine ABS Control Module

• Remove the cover of the ABS control module.
• Inspect for any visible damage, corrosion, or loose connections.
• Ensure all wiring harnesses are securely connected and free from wear.

5. Check Brake Fluid

• Locate the brake fluid reservoir.
• Ensure the fluid is at the appropriate level and check for contamination.
• If fluid is low, top it up with manufacturer-recommended brake fluid.

6. Test ABS Pump and Relay

• Locate the ABS pump and relay.
• Use a multimeter to check the power supply to the relay.
• Activate the ABS by turning the ignition on and listen for the pump operation.

7. Reconnect Battery and Clear Codes

• Reconnect the battery.
• Use the OBD-II scanner to clear any stored error codes.
• Start the vehicle and observe if the ABS light remains off.