How can I fix the Ford Explorer 2021's trunk release not functioning?

Ford Explorer Sixth Generation (2020-present)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

600 words

Problem Statement

Learn how to diagnose and repair the trunk release not functioning on a 2021 Ford Explorer with step-by-step instructions.

Affected Component

trunk release system

Estimated Time

2-4 hours

Symptoms

•Trunk release button on key fob does not activate trunk.
•Trunk release button on dashboard or driver’s side does not work.
•Manual trunk release (if equipped) may also be non-functional.
•No clicking sound or motor operation when attempting to release the trunk.

Diagnostic Steps

1
Check the Key Fob Battery
2
Verify Dashboard Button Functionality
3
Inspect the Trunk Release Actuator
4
Check the Wiring Harness
5
Scan for DTCs (Diagnostic Trouble Codes)

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

•Multimeter
•OBD-II Scanner
•Screwdrivers (Phillips & Flathead)
•Trim Removal Tools
•Electrical Contact Cleaner
•Basic Socket Set
•Torque Wrench

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Solution

Issue: Trunk Release Not Functioning on 2021 Ford Explorer

Symptoms:

Trunk release button on key fob does not activate trunk.
Trunk release button on dashboard or driver’s side does not work.
Manual trunk release (if equipped) may also be non-functional.
No clicking sound or motor operation when attempting to release the trunk.

Step 1: Check the Key Fob Battery

Remove the Key Fob: Use a small screwdriver to open the key fob.
Inspect the Battery: Check the battery for corrosion or wear. Replace if necessary with a new CR2032 battery.
Test the Key Fob: After replacing the battery, test the trunk release function. If it works, the problem is resolved.

Step 2: Verify Dashboard Button Functionality

Visual Inspection: Check for any physical damage or debris around the dashboard trunk release button.
Electrical Test:
- Disconnect the connector behind the button.
- Use a multimeter to check for continuity across the switch terminals when pressed. A reading of near zero ohms indicates a good switch.
- If no continuity, replace the button.

Step 3: Inspect the Trunk Release Actuator

Access the Trunk Lid: Open the trunk manually and remove the trim panel using trim removal tools.
Locate the Actuator: The actuator is typically mounted near the latch mechanism.
Electrical Check:
- Disconnect the actuator's electrical connector.
- Use a multimeter to check for power at the connector while pressing the trunk release button.
- If no power is present, trace back to the wiring harness for shorts or disconnections.

Step 4: Check the Wiring Harness

Inspect Wiring: Check for any damaged wires along the harness leading to the trunk release actuator and switch.
Repair/Replace Wires: If any wires are damaged, repair them using solder and heat shrink tubing, or replace the harness if necessary.

Step 5: Scan for DTCs (Diagnostic Trouble Codes)

Connect OBD-II Scanner: Plug the scanner into the vehicle’s OBD-II port.
Scan for Codes: Check for any trouble codes related to the Body Control Module (BCM) or trunk release system.
Interpret Codes: If codes are present, refer to the service manual for specifics on troubleshooting those codes.

Repair Instructions:

Step 1: Replace Key Fob Battery (if applicable)

Ensure the new battery is installed in the correct orientation, then reassemble the fob.

Step 2: Replace Dashboard Button (if faulty)

Remove the faulty button and install the new switch. Reconnect the electrical connector and secure the trim back.

Step 3: Replace Trunk Release Actuator (if faulty)

Remove Old Actuator: Unscrew the actuator from the trunk latch assembly.
Install New Actuator: Position the new actuator in place and secure with screws.
Reconnect Electrical Connector: Ensure the connection is secure.

Step 4: Reassemble Trim Panels

Once repairs are complete, reattach any trim panels securely, ensuring no clips are broken.

Step 5: Test the System

Test All Release Methods: After repairs, test the trunk release button on the key fob, dashboard, and any manual release.
Double Check Functionality: Ensure the trunk opens smoothly and latches properly.

Conclusion

If after following these steps the trunk release still does not function, further diagnostic work may be required, including in-depth BCM checks or professional assistance. Always refer to the service manual for specific repair information related to your vehicle.