how to troubleshoot the power locks not working in my Ford F-150 13th Generation (2015-2020)

Ford F-150 13th Generation (2015-2020)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

4 min read

626 words

Problem Statement

Learn how to troubleshoot and fix power locks not working in Ford F-150 (2015-2020). Step-by-step guide with diagnostic steps and solutions.

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 avoid short circuits

Symptoms

•Power locks do not respond when pressing the remote key fob
•Power lock buttons inside the vehicle do not operate
•Driver’s side door lock operates manually but not electronically
•No sound or clicking noise when attempting to lock/unlock
•Check engine light illuminated

Diagnostic Steps

1
Check the battery voltage of the key fob using a multimeter to ensure it is not dead
2
Inspect the fuses related to the power lock system in the fuse box for any blown fuses
3
Use an OBD-II scanner to check for any fault codes related to the central locking system
4
Test the power lock switch for continuity using a multimeter
5
Visual inspection of wiring and connectors in the door panels for damage or corrosion
6
Verify the operation of the central locking module by checking for power and ground at the connector

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
•Socket set
•Screwdriver
•Fuse puller

Parts Required

•Replacement key fob battery (CR2032)
•Power lock switch (if faulty)
•Fuses (if blown)
•Central locking module (if faulty)

Related Faults

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Diagnostic Steps

1
Check the battery voltage of the key fob using a multimeter to ensure it is not dead
2
Inspect the fuses related to the power lock system in the fuse box for any blown fuses
3
Use an OBD-II scanner to check for any fault codes related to the central locking system
4
Test the power lock switch for continuity using a multimeter
5
Visual inspection of wiring and connectors in the door panels for damage or corrosion
6
Verify the operation of the central locking module by checking for power and ground at the connector

Solution

1. Preparation

Gather tools including a multimeter, OBD-II scanner, socket set, and screwdriver.
Disconnect the vehicle battery to ensure safety while working on electrical components.

2. Check and Replace Key Fob Battery

Open the key fob casing using a small flathead screwdriver.
Remove the old battery and replace it with a new one (typically CR2032).
Reassemble the key fob and test the locks again.

3. Inspect and Replace Fuses

Locate the fuse box (usually under the dashboard on the driver’s side or in the engine compartment).
Use a fuse puller or pliers to remove the power lock fuse (refer to the owner’s manual for the exact location).
Inspect the fuse for a break and replace it if necessary with a fuse of the same amperage.

4. Test and Replace Power Lock Switch

Remove the power lock switch from the door panel by unscrewing it.
Use a multimeter to check for continuity across the switch terminals when pressed.
If no continuity is detected, replace the switch with a new one.

5. Inspect Wiring and Connectors

Remove the door panel by unscrewing and gently prying it away from the door frame.
Inspect wiring harnesses and connectors for any signs of fraying, corrosion, or disconnection.
Repair or replace any damaged wiring or connectors as needed.

6. Test Central Locking Module

Locate the central locking module (usually found in the driver’s side door or under the dashboard).
Check for power and ground at the module’s connector using a multimeter.
If no power is present, trace back to the fuse box or battery for issues.
Replace the central locking module if it is faulty.