why does my Ford F-150 13th Generation (2015-2020) key fob not work after changing the battery

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

Error Codes

1 hour

Time

medium

Difficulty

medium

Severity

3 min read

463 words

Problem Statement

Learn how to troubleshoot and fix a non-working key fob after battery replacement for 2015-2020 Ford F-150. Step-by-step guide with diagnostic procedures.

Affected Component

Electrical

Estimated Time

1 hour

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the vehicle battery before working on electronic components to prevent short circuits.

Symptoms

•Key fob buttons do not respond
•Vehicle does not unlock or lock with the key fob
•No LED light activation when buttons are pressed
•Difficulty starting the vehicle if keyless entry is not functioning
•Error message displayed on the dashboard related to key fob or keyless entry

Diagnostic Steps

1
Verify that the new battery is installed correctly, ensuring the positive and negative terminals are aligned as indicated.
2
Check the battery voltage using a multimeter to ensure it is within the required range (typically around 3 volts for CR2032).
3
Inspect the key fob casing for any physical damage or misalignment.
4
Reprogram the key fob using the vehicle's on-board programming procedure.
5
Confirm that the vehicle's keyless entry system is functioning by using a spare key fob if available.

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 screwdriver
•Multimeter

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
Verify that the new battery is installed correctly, ensuring the positive and negative terminals are aligned as indicated.
2
Check the battery voltage using a multimeter to ensure it is within the required range (typically around 3 volts for CR2032).
3
Inspect the key fob casing for any physical damage or misalignment.
4
Reprogram the key fob using the vehicle's on-board programming procedure.
5
Confirm that the vehicle's keyless entry system is functioning by using a spare key fob if available.

Solution

1. Preparation

Gather necessary tools including a small screwdriver and multimeter.
Ensure you have the correct replacement battery (CR2032).
Disconnect the battery from the vehicle for safety while working on electronic components.

2. Inspect Key Fob

Sub-step 1: Open the key fob casing using the small screwdriver.
Sub-step 2: Remove the battery and check for corrosion or debris in the battery compartment.
Sub-step 3: Clean the terminals with isopropyl alcohol and a cotton swab if necessary.
Sub-step 4: Reinsert the new battery, ensuring correct polarity.

3. Reprogram Key Fob

Sub-step 1: Enter the vehicle and close all doors.
Sub-step 2: Insert the key into the ignition and turn it to the 'On' position (do not start the engine).
Sub-step 3: Press the ‘Unlock’ button on the driver's side door for about five seconds, then release it.
Sub-step 4: Turn the ignition off and remove the key.
Sub-step 5: Test the key fob to verify that it is now functioning correctly.