how to resolve the lane keep assist not working in Ford Explorer Fifth Generation (2011-2019)

Ford Explorer Fifth Generation (2011-2019)

Error Codes

1-3 hours

Time

medium

Difficulty

high

Severity

3 min read

559 words

⚠️ Safety Warning

This issue requires immediate attention. If you are not experienced with automotive repairs, consult a professional mechanic. Working on critical systems can be dangerous.

Problem Statement

Learn how to diagnose and fix Lane Keep Assist issues in Ford Explorer (2011-2019). Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Electrical

Estimated Time

1-3 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect battery before working on electrical systems to prevent shocks or shorts.

Symptoms

•Lane Keep Assist warning light illuminated on the dashboard
•Steering wheel does not respond to lane markings
•Vehicle drifts outside lane without correction
•System intermittently engages or disengages
•Difficulty in detecting lane markings during day or night

Diagnostic Steps

1
Scan the vehicle's OBD-II system for any error codes related to the Lane Keep Assist feature.
2
Check the vehicle's camera and sensor alignment, ensuring they are clean and unobstructed.
3
Inspect the lane marking recognition system for any software updates or known issues.
4
Verify the vehicle's speed and steering angle sensor readings for accuracy.
5
Test the LKA system using the vehicle's diagnostic tools to assess functionality.
6
Check for a blown fuse in the LKA system circuit.

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
•Fuse tester or multimeter
•Soft cloth
•Cleaning solution
•Professional alignment equipment

Parts Required

•Replacement fuse

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Diagnostic Steps

1
Scan the vehicle's OBD-II system for any error codes related to the Lane Keep Assist feature.
2
Check the vehicle's camera and sensor alignment, ensuring they are clean and unobstructed.
3
Inspect the lane marking recognition system for any software updates or known issues.
4
Verify the vehicle's speed and steering angle sensor readings for accuracy.
5
Test the LKA system using the vehicle's diagnostic tools to assess functionality.
6
Check for a blown fuse in the LKA system circuit.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked on a level surface with the engine off.
Disconnect the battery to prevent electrical shorts.

2. Clean and Inspect Cameras/Sensors

Tools Required: Soft cloth, cleaning solution.
Instructions:
- Locate the forward-facing camera and sensors near the rearview mirror.
- Use the soft cloth and cleaning solution to gently clean any dirt or obstructions from the camera lens and sensors.
- Inspect for any physical damage to the camera or sensors.

3. Check and Replace Fuses

Tools Required: Fuse tester or multimeter, replacement fuse (if necessary).
Instructions:
- Access the fuse box, typically located under the dashboard or in the engine compartment.
- Identify the fuse associated with the Lane Keep Assist system using the fuse diagram.
- Test the fuse with a fuse tester or multimeter; replace it if found defective.

4. Reprogram/Update Software

Tools Required: OBD-II scanner with software update capability.
Instructions:
- Connect the OBD-II scanner to the vehicle’s diagnostic port.
- Check for available updates specific to the Lane Keep Assist system.
- Follow the prompts on the scanner to update the software if necessary.

5. Calibration of LKA System

Tools Required: Professional alignment equipment (if available).
Instructions:
- Follow the manufacturer's procedure for calibrating the Lane Keep Assist system.
- Ensure that the vehicle’s steering angle sensor is accurately set; this may involve placing the vehicle on a lift or an alignment rack.
- Perform a test drive to verify that the system is functioning correctly post-calibration.