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

Ford Explorer Sixth Generation (2020-present)

Error Codes

medium

Difficulty

medium

Severity

4 min read

612 words

Problem Statement

Learn how to troubleshoot and repair the Lane Keeping Assist system on a 2020 Ford Explorer with our step-by-step guide.

Affected Component

Lane Keeping Assist System

Symptoms

•Lane Keeping Assist warning light illuminated on the dashboard.
•Lane Keeping Assist system not activating as intended.
•Steering assist feels weak or unresponsive.
•Vehicle does not maintain lane position as expected.
•System intermittently engages or disengages without command.

Diagnostic Steps

1
Visual Inspection
2
Check for Fault Codes
3
Verify System Settings

Solution

💡 Expert Tip

For complex repairs like this, consider taking photos at each step. This helps if you need to reverse a step or consult with a mechanic. Also, keep all removed parts organized - you may need to reference them during reassembly.

Verification

After completing the repair, verify that the issue has been resolved:

✓Test the affected component to ensure it functions correctly
✓Check for any error codes or warning lights
✓Monitor the vehicle for a few days to ensure the issue does not recur

Prevention Tips

To prevent this issue from occurring again:

•Follow the manufacturer's recommended maintenance schedule
•Address warning signs early before they develop into major issues
•Use quality parts and fluids recommended for your vehicle
•Keep detailed records of all repairs and maintenance

Tools & Equipment Required

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

Related Faults

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Solution

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.