my Ford F-150 13th Generation (2015-2020) key fob won't unlock the doors what should I check

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

Error Codes

30 minutes to 1 hour

Time

medium

Difficulty

medium

Severity

3 min read

480 words

Problem Statement

Learn how to diagnose and fix a non-functioning key fob for Ford F-150 13th Generation. Step-by-step guide with symptoms, diagnostic steps, and solutions.

Affected Component

Electrical

Estimated Time

30 minutes to 1 hour

⚠️ Safety Warnings

Important safety information - read before proceeding

•Ensure the vehicle is in 'Park' and the ignition is off when working on the key fob.

Symptoms

•Key fob buttons do not respond
•Vehicle doors do not unlock remotely
•Key fob indicator light does not illuminate when buttons are pressed
•Manual key entry works but remote access does not
•Reduced range of the key fob signal

Diagnostic Steps

1
Replace the key fob battery and test functionality.
2
Inspect the key fob for physical damage or water exposure.
3
Check for any interference from other electronic devices or nearby vehicles.
4
Verify the vehicle's battery is in good condition and properly charged.
5
Reprogram the key fob to the vehicle if necessary.
6
Scan the vehicle's OBD-II system for any relevant error codes.

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
•OBD-II scanner

Parts Required

•CR2032 battery

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Diagnostic Steps

1
Replace the key fob battery and test functionality.
2
Inspect the key fob for physical damage or water exposure.
3
Check for any interference from other electronic devices or nearby vehicles.
4
Verify the vehicle's battery is in good condition and properly charged.
5
Reprogram the key fob to the vehicle if necessary.
6
Scan the vehicle's OBD-II system for any relevant error codes.

Solution

1. Preparation

Gather necessary tools and parts.
Tools Required: Flathead screwdriver, CR2032 battery (or compatible), OBD-II scanner (if needed).

2. Replace Key Fob Battery

Use the flathead screwdriver to gently pry open the key fob casing.
Remove the old battery and insert a new CR2032 battery, ensuring the positive (+) side faces upwards.
Snap the key fob casing back together.

3. Reprogram Key Fob (if necessary)

Sit in the driver’s seat with all doors closed.
Insert the key into the ignition and turn it to the 'On' position (do not start the engine).
Cycle the key from 'Off' to 'On' eight times within 10 seconds. The doors will lock and unlock to indicate programming mode.
Press any button on the key fob within 20 seconds to program it.
Turn the ignition to 'Off' to exit programming mode.

4. Check for Interference

Move away from other electronic devices and vehicles.
Test the key fob again to see if the unlocking function has returned.