how to fix the key fob not unlocking my Ford F-150 13th Generation (2015-2020)

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

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

520 words

Problem Statement

Learn how to fix a key fob that won't unlock your Ford F-150 (2015-2020). Step-by-step guide with 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 components to avoid shorts or shocks.

Symptoms

•Key fob buttons do not respond when pressed
•Vehicle does not unlock when standing within the proximity
•Red LED light on the key fob does not illuminate
•Engine immobilizer light remains illuminated on the dashboard
•Battery warning light may appear if the key fob battery is low

Diagnostic Steps

1
Check the battery level of the key fob by replacing the battery with a new one.
2
Inspect the key fob for physical damage or wear.
3
Verify the vehicle’s remote entry settings in the vehicle’s settings menu.
4
Attempt to unlock the vehicle using the physical key within the fob.
5
Scan the vehicle's computer for any fault codes related to the keyless entry system using an OBD-II scanner.

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

•Flathead screwdriver
•Small Phillips screwdriver
•OBD-II scanner

Parts Required

•Key fob battery (CR2032)

Related Faults

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Diagnostic Steps

1
Check the battery level of the key fob by replacing the battery with a new one.
2
Inspect the key fob for physical damage or wear.
3
Verify the vehicle’s remote entry settings in the vehicle’s settings menu.
4
Attempt to unlock the vehicle using the physical key within the fob.
5
Scan the vehicle's computer for any fault codes related to the keyless entry system using an OBD-II scanner.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure workspace is clean and organized.
Disconnect the vehicle battery to prevent any electrical shorts.

2. Replace Key Fob Battery

Tools Required: Flathead screwdriver, small Phillips screwdriver
Open the key fob using a flathead screwdriver to gently pry apart the two halves.
Remove the old battery (typically a CR2032) and dispose of it properly.
Insert a new battery, ensuring the positive side is facing up.
Snap the key fob back together securely.

3. Reprogram Key Fob (if necessary)

Tools Required: None
Insert the key into the ignition and turn it to the “On” position without starting the engine.
Press the “Unlock” button on the key fob within 10 seconds.
Turn the ignition back to the “Off” position.
Repeat this process two more times (total of three cycles).
Turn the key to “On” again and press “Unlock” on the key fob to finalize the programming.

4. Check and Reset Vehicle Settings

Tools Required: None
Start the vehicle and navigate to the settings menu on the dashboard display.
Ensure that remote unlocking features are enabled.
If necessary, reset to factory settings to restore default functionalities.