how to fix the trunk release not working on Ford Mustang S650 (2024-Present)

Ford Mustang S650 (2024-Present)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

510 words

Problem Statement

Learn how to diagnose and fix the trunk release issue on 2024 Ford Mustang S650. Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component

Electrical

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems to prevent shock or short circuits.

Symptoms

•Trunk release button does not respond when pressed
•Key fob trunk release feature is non-functional
•Trunk release lever inside the vehicle is unresponsive
•Trunk does not open manually when attempting to lift it
•No sound or indication of the trunk release mechanism engaging

Diagnostic Steps

1
Inspect the trunk release button for physical damage or obstruction.
2
Check the key fob battery and replace if necessary.
3
Verify the wiring and connections to the trunk release mechanism for any signs of damage or disconnection.
4
Use an OBD-II scanner to check for any related error codes that might indicate electrical issues.
5
Test the trunk release relay by swapping it with a similar relay in the fuse box.
6
Manually inspect the latch mechanism for any mechanical blockage or misalignment.

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

•Small flathead screwdriver
•Multimeter
•Electrical tape
•Wire connectors
•Socket set

Parts Required

•Key fob battery (CR2032)
•Trunk release relay (if faulty)

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Diagnostic Steps

1
Inspect the trunk release button for physical damage or obstruction.
2
Check the key fob battery and replace if necessary.
3
Verify the wiring and connections to the trunk release mechanism for any signs of damage or disconnection.
4
Use an OBD-II scanner to check for any related error codes that might indicate electrical issues.
5
Test the trunk release relay by swapping it with a similar relay in the fuse box.
6
Manually inspect the latch mechanism for any mechanical blockage or misalignment.

Solution

1. Preparation

Disconnect the negative battery terminal to ensure safety while working on electrical components.
Gather required tools and parts.

2. Inspect and Replace Key Fob Battery

Tools Required: Small flathead screwdriver
Open the key fob using the screwdriver and replace the battery with a new one (commonly CR2032).
Ensure the battery is installed with the correct polarity.

3. Check and Repair Wiring

Tools Required: Multimeter, electrical tape, wire connectors
Remove the trunk release button from the dashboard and inspect the wiring harness for any damage.
Use a multimeter to test for continuity in the wires leading to the trunk release mechanism.
Repair any damaged wires with electrical tape or replace them with new wiring as necessary.

4. Replace Trunk Release Relay

Tools Required: Socket set
Locate the trunk release relay in the fuse box (refer to the owner's manual for the exact location).
Remove the relay and replace it with a new one.
Reinstall the fuse box cover.

5. Reassemble and Test

Reconnect the negative battery terminal.
Test the trunk release button, key fob, and internal lever to ensure proper operation.