How do I troubleshoot the Ford Explorer 2020's lane keeping assist system?

Troubleshooting the Lane Keeping Assist System on a 2020 Ford Explorer

Tools Required

• OBD-II scanner
• Screwdrivers (Phillips and flathead)
• Torque wrench
• Multimeter
• Cleaning supplies (glass cleaner, microfiber cloth)
• Safety glasses and gloves

Repair Instructions

Step 1: Clean the Cameras and Sensors

• Action: Use a microfiber cloth and glass cleaner to clean the front camera and sensors. Ensure no dirt or debris is obstructing the view.
• Caution: Avoid using abrasive materials that could scratch the lenses.

Step 2: Inspect and Clear Diagnostic Codes

• Action: Connect the OBD-II scanner to the vehicle’s diagnostic port.
  • Navigate to the diagnostics section to read any stored fault codes.
  • Document any fault codes for reference.
• Action: If any codes are present that relate to the Lane Keeping Assist, clear them and take the vehicle for a test drive to see if the issue persists.

Step 3: Check Steering Angle Sensor

• Action: Use the multimeter to check the steering angle sensor.
  • Disconnect the sensor connector and test its resistance according to the service manual specifications.
  • If the readings are outside of specifications, replace the steering angle sensor.

Step 4: Inspect the Lane Keeping Assist Module

• Action: Locate the Lane Keeping Assist module, usually found near the windshield or under the dashboard.
  • Inspect the wiring harness for any signs of damage, corrosion, or loose connections.
  • If connections are loose, ensure they are securely connected. If damaged, repair or replace the wiring harness as needed.

Step 5: Verify Calibration

• Action: If the issue persists, the system may need calibration.
  • Follow the vehicle service manual for calibration instructions, which typically involve using a diagnostic tool to set the camera and sensors to their correct positions.
  • Perform the calibration process in a safe environment following the manufacturer's guidelines.

Step 6: Test the System

• Action: After performing repairs, take the vehicle for a test drive on a straight road.
  • Monitor the Lane Keeping Assist function to ensure it engages and disengages correctly.
  • Check if the warning lights on the dashboard have cleared.

Conclusion

If the Lane Keeping Assist system continues to exhibit problems after following these steps, further diagnosis may require specialized Ford diagnostic equipment, or it may be necessary to consult a professional technician or visit a Ford dealership for in-depth analysis and repair. Regular maintenance and checks will help ensure the system functions correctly in the future.