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

3 min read

569 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 repair instructions.

Affected Component

Electrical

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

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

Symptoms

•Power locks do not respond when using the key fob
•Interior lock switches do not activate the locks
•Audible locking sound is absent when attempting to lock/unlock
•Check if other electrical components like power windows are functioning
•Battery in the key fob may be weak or dead

Diagnostic Steps

1
Check the key fob battery and replace it if necessary
2
Verify that the vehicle's battery is fully charged and connections are clean and tight
3
Inspect the fuses related to the power locks using the fuse panel diagram in the owner's manual
4
Scan for any error codes using an OBD-II scanner to identify potential electrical issues
5
Test the lock actuator by applying direct power to the lock motor
6
Check the wiring and connectors for continuity and signs of damage around the door and the locking mechanism

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
•Screwdriver set
•Wire strippers/crimpers
•Replacement fuse

Parts Required

•Replacement fuse
•Lock actuator

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Diagnostic Steps

1
Check the key fob battery and replace it if necessary
2
Verify that the vehicle's battery is fully charged and connections are clean and tight
3
Inspect the fuses related to the power locks using the fuse panel diagram in the owner's manual
4
Scan for any error codes using an OBD-II scanner to identify potential electrical issues
5
Test the lock actuator by applying direct power to the lock motor
6
Check the wiring and connectors for continuity and signs of damage around the door and the locking mechanism

Solution

1. Preparation

Tools Required:
- OBD-II scanner
- Multimeter
- Screwdriver set
- Wire strippers/crimpers
- Replacement fuse (if needed)
Disconnect the negative battery terminal to ensure safety while working on electrical components.

2. Check and Replace Fuses

Locate the fuse box under the dashboard and/or in the engine compartment.
Identify the fuse for the power locks using the fuse diagram.
Remove the fuse using a fuse puller or pliers.
Inspect the fuse; if it is blown, replace it with a new fuse of the same amperage.
Reconnect the battery and test the power locks again.

3. Inspect and Repair Wiring

Remove the door panel for access to the wiring harness.
Visually inspect wiring for frays, corrosion, or disconnections.
Use a multimeter to check for continuity in the wiring.
Repair any damaged wires using solder and heat-shrink tubing or crimp connectors.

4. Test and Replace Lock Actuator

Disconnect the wiring harness from the lock actuator.
Use a multimeter to check for proper voltage when activating the lock switch.
If no voltage is present, further investigate wiring or switch issues.
If voltage is present but the actuator does not respond, replace the lock actuator.
Install the new actuator by reversing the removal process.

5. Reassemble and Finalize

Reattach the door panel securely with screws and clips.
Reconnect the negative battery terminal.
Test the power locks to ensure they function correctly.