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

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

Error Codes

1 hour

Time

medium

Difficulty

high

Severity

3 min read

469 words

⚠️ Safety Warning

This issue requires immediate attention. If you are not experienced with automotive repairs, consult a professional mechanic. Working on critical systems can be dangerous.

Problem Statement

Learn how to diagnose and fix a non-working key fob for Ford F-150 13th Generation (2015-2020). Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component

Electrical

Estimated Time

1 hour

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical components to avoid short circuits.

Symptoms

•Key fob buttons unresponsive
•Vehicle does not respond to key fob signals
•Dashboard displays 'Key Not Detected' message
•Inability to start the engine using the key fob
•Weak or dead key fob battery

Diagnostic Steps

1
Replace the key fob battery with a new CR2032 battery.
2
Test the key fob functionality using a spare key fob (if available).
3
Check for physical damage to the key fob casing or buttons.
4
Scan the vehicle's OBD-II system for any relevant error codes related to the keyless entry system.
5
Inspect the vehicle's keyless entry antenna for damage or disconnection.
6
Reprogram the key fob to the vehicle if necessary.

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

•Small flat-head screwdriver
•Torx screwdriver set

Parts Required

•CR2032 battery (2 pcs recommended for spare)

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Diagnostic Steps

1
Replace the key fob battery with a new CR2032 battery.
2
Test the key fob functionality using a spare key fob (if available).
3
Check for physical damage to the key fob casing or buttons.
4
Scan the vehicle's OBD-II system for any relevant error codes related to the keyless entry system.
5
Inspect the vehicle's keyless entry antenna for damage or disconnection.
6
Reprogram the key fob to the vehicle if necessary.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is in a well-lit area.
Disconnect the vehicle battery to ensure safety during the procedure.

2. Replace the Key Fob Battery

Tools Required: Small flat-head screwdriver
Using the screwdriver, carefully pry open the key fob casing.
Remove the old CR2032 battery and install a new one, ensuring the polarity aligns correctly (positive side up).
Snap the key fob casing back together securely.

3. Reprogram the Key Fob

Tools Required: None
Insert the key into the ignition and turn it to the "On" position (do not start the engine).
Press the "Unlock" button on the key fob for at least 5 seconds.
Turn the ignition to the "Off" position and remove the key.
Test the key fob by pressing the lock and unlock buttons.

4. Inspect and Repair Keyless Entry Antenna

Tools Required: Torx screwdriver set
Open the vehicle's hood and locate the keyless entry antenna, usually mounted near the windshield or under the dash.
Inspect for any visible damage or loose connections.
Tighten or repair any loose connections and ensure it is securely mounted.