why is my Ford F-150 13th Generation (2015-2020) power lock not working

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

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

474 words

Problem Statement

Learn how to diagnose and fix power lock issues in Ford F-150 (2015-2020). Step-by-step guide with symptoms, diagnostic steps, 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 to avoid shorts.
•Allow the vehicle to cool before working on any components that may have been running hot.

Symptoms

•Power lock switch does not respond when pressed
•Doors remain unlocked despite attempts to engage power locks
•Audible clicking sound from the door area when switch is activated (or no sound)
•Key fob does not function to lock or unlock doors
•Manual lock operation works, but power function is unresponsive

Diagnostic Steps

1
Check the vehicle's fuse box for blown fuses related to the power locks.
2
Inspect the power lock switch for physical damage or wear.
3
Use an OBD-II scanner to check for any related error codes.
4
Test the key fob battery and functionality.
5
Inspect the wiring and connections at the door harness for any signs of damage or corrosion.
6
Verify the operation of the door actuator by applying direct power to it.

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
•Screwdrivers
•Trim removal tool

Parts Required

•Replacement door lock actuator (if needed)
•Replacement fuse (if blown)
•Key fob battery

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Symptoms

•Power lock switch does not respond when pressed

•Doors remain unlocked despite attempts to engage power locks

•Audible clicking sound from the door area when switch is activated (or no sound)

•Key fob does not function to lock or unlock doors

•Manual lock operation works, but power function is unresponsive

Diagnostic Steps

1
Check the vehicle's fuse box for blown fuses related to the power locks.
2
Inspect the power lock switch for physical damage or wear.
3
Use an OBD-II scanner to check for any related error codes.
4
Test the key fob battery and functionality.
5
Inspect the wiring and connections at the door harness for any signs of damage or corrosion.
6
Verify the operation of the door actuator by applying direct power to it.

Solution

1. Preparation

Gather tools: OBD-II scanner, multimeter, socket set, and screwdrivers.
Ensure the vehicle is parked safely with the ignition turned off.

2. Check and Replace Fuse

Sub-steps:
1. Locate the fuse box (typically under the dashboard or in the engine compartment).
2. Refer to the owner’s manual to identify the specific fuse for the power locks.
3. Remove the fuse and inspect it; replace if blown with a fuse of the same amperage.

3. Inspect Power Lock Switch

Sub-steps:
1. Remove the door panel using a screwdriver and trim removal tool.
2. Disconnect the power lock switch from the wiring harness.
3. Use a multimeter to test the switch for continuity when pressed; replace if faulty.

4. Test Key Fob

Sub-steps:
1. Remove the key fob cover and replace the battery with a new one.
2. After replacing, test the fob functionality to see if it successfully locks/unlocks the doors.

5. Inspect Wiring and Connections

Sub-steps:
1. Check the wiring harness connections at the door for wear, corrosion, or damage.
2. Repair or replace damaged wiring as necessary.
3. Ensure all connectors are securely attached.

6. Replace Door Lock Actuator

Sub-steps:
1. If the actuator is determined to be faulty, unbolt it from the door.
2. Disconnect the wiring harness from the actuator.
3. Install the new actuator in reverse order, ensuring all connections are secure and properly aligned.

Tools Required:

OBD-II scanner
Multimeter
Socket set
Screwdrivers
Trim removal tool

Parts Required:

Replacement door lock actuator (if needed)
Replacement fuse (if blown)
Key fob battery

Estimated Repair Time: 2-4 hours

Safety Warnings:

Disconnect the battery before working on electrical systems to avoid shorts.
Allow the vehicle to cool before working on any components that may have been running hot.