why does my Ford F-150 13th Generation (2015-2020) power door locks not working

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

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

544 words

Problem Statement

Learn how to diagnose and fix power door locks not working in Ford F-150 13th Generation (2015-2020). Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Electrical

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems.
•Ensure all tools are accounted for to prevent any tools from being left in the vehicle.

Symptoms

•Power door locks do not respond when using the key fob
•Door lock switch inside the vehicle is unresponsive
•Keyless entry system not functioning
•Interior lights do not illuminate when doors are opened
•Possible 'door ajar' warning message displayed on the dashboard

Diagnostic Steps

1
Check the key fob battery to ensure it has sufficient charge.
2
Inspect the door lock switch for any physical damage or debris.
3
Use an OBD-II scanner to check for any stored trouble codes related to the central locking system.
4
Test the voltage at the door lock actuator using a multimeter.
5
Verify the functionality of the vehicle's battery and charging system.
6
Inspect the wiring harness and connectors for signs of wear or damage.

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
•Flathead screwdriver

Parts Required

•CR2032 battery (for key fob)
•Door lock switch (if defective)
•Door lock actuator (if defective)

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Diagnostic Steps

1
Check the key fob battery to ensure it has sufficient charge.
2
Inspect the door lock switch for any physical damage or debris.
3
Use an OBD-II scanner to check for any stored trouble codes related to the central locking system.
4
Test the voltage at the door lock actuator using a multimeter.
5
Verify the functionality of the vehicle's battery and charging system.
6
Inspect the wiring harness and connectors for signs of wear or damage.

Solution

1. Preparation

Gather tools and parts required.
Disconnect the negative battery terminal to prevent electrical shorts.

2. Replace Key Fob Battery

Remove the key fob casing using a flathead screwdriver.
Replace the old battery with a new CR2032 battery, ensuring proper orientation.
Reassemble the key fob and test the locking function.

3. Inspect and Replace Door Lock Switch

Remove the door panel using a socket set to access the door lock switch.
Unplug the electrical connector from the switch.
Test the switch with a multimeter for continuity; replace if it fails.
Reinstall the door panel securely.

4. Repair or Replace Door Lock Actuator

Access the door lock actuator by removing the door panel as described above.
Disconnect the actuator's electrical connector.
Test for voltage at the actuator's plug using a multimeter while operating the door lock switch.
If no voltage is present, trace wiring back to the central locking module for inspection.
If voltage is present but the actuator does not function, replace the actuator.

5. Reassemble and Test

Reconnect all connectors and reassemble the door panel.
Reconnect the negative battery terminal.
Test the power door locks with both the key fob and the door lock switch.