how to fix the rear parking sensors not working in Ford Explorer Sixth Generation (2020-present)

Ford Explorer Sixth Generation (2020-present)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

548 words

Problem Statement

Learn how to diagnose and fix rear parking sensors not working in Ford Explorer (2020-present). Step-by-step guide with tools and tips for repair.

Affected Component

Electrical

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems to prevent shorts.
•Ensure the vehicle is securely supported if lifting is required for access.

Symptoms

•Parking aid warning light illuminated on the dashboard
•No audible alerts when approaching obstacles
•Inaccurate distance readings on the display
•Check for any error codes related to the parking sensor system
•Malfunctioning or completely non-responsive sensors

Diagnostic Steps

1
Inspect the rear parking sensor location for physical damage or obstructions.
2
Use an OBD-II scanner to check for any error codes related to the parking sensors.
3
Verify the electrical connections to the parking sensors for corrosion or loose wiring.
4
Test the parking sensor operation using a multimeter to confirm power and ground are present.
5
Check the vehicle’s fuse box for any blown fuses related to the parking assist system.
6
Conduct a visual inspection of the rear control module for damage or water intrusion.

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
•Multimeter
•Socket set
•Torque wrench
•Soft cloth

Parts Required

•Replacement parking sensors (if faulty)
•Wiring harness (if damaged)

Related Faults

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Diagnostic Steps

1
Inspect the rear parking sensor location for physical damage or obstructions.
2
Use an OBD-II scanner to check for any error codes related to the parking sensors.
3
Verify the electrical connections to the parking sensors for corrosion or loose wiring.
4
Test the parking sensor operation using a multimeter to confirm power and ground are present.
5
Check the vehicle’s fuse box for any blown fuses related to the parking assist system.
6
Conduct a visual inspection of the rear control module for damage or water intrusion.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked on a level surface and the ignition is turned off.
Disconnect the vehicle's battery to prevent electrical shorts.

2. Inspect and Clean Sensors

Tools Required: Soft cloth, cleaning solution
Sub-steps:
1. Remove any dirt or debris from the sensor locations using a soft cloth and cleaning solution.
2. Ensure the sensors are clean and free from obstructions that could impair functionality.

3. Repair or Replace Faulty Sensors

Tools Required: Socket set, torque wrench
Sub-steps:
1. Remove the rear bumper cover if necessary to access the sensors (refer to vehicle service manual for specific instructions).
2. Disconnect the wiring harness from the faulty sensor.
3. Use a socket set to remove the sensor from its mounting bracket.
4. Install the new or repaired sensor by reversing the removal process.
5. Reconnect the wiring harness securely.
6. Torque the sensor to the manufacturer’s specified value.

4. Check Electrical Connections

Tools Required: Multimeter
Sub-steps:
1. Reconnect the vehicle’s battery.
2. Use a multimeter to test for voltage at the sensor connectors while the ignition is on.
3. Ensure proper ground is present; repair any faulty connections as needed.

5. Final Assembly

Reinstall the rear bumper cover, ensuring all clips and fasteners are secure.
Double-check all connections and ensure there are no loose wires.