how to fix a malfunctioning key fob for Ford Explorer Fifth Generation (2011-2019)

Ford Explorer Fifth Generation (2011-2019)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

483 words

Problem Statement

Learn how to diagnose and fix a malfunctioning key fob for Ford Explorer Fifth Generation (2011-2019). Step-by-step guide with symptoms and solutions.

Affected Component

Electrical

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

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

Symptoms

•Key fob buttons not responding
•Inability to unlock or lock the doors remotely
•Check key fob battery warning on the dashboard
•Car ignition not recognizing the key fob
•Intermittent functionality of key fob

Diagnostic Steps

1
Inspect the key fob for physical damage or signs of wear.
2
Check the battery voltage using a multimeter; replace if below 3V.
3
Reprogram the key fob using the vehicle's onboard programming procedure.
4
Verify if the vehicle's receiver is functioning correctly by checking with a second key fob, if available.
5
Inspect the vehicle's wiring and connections related to the key fob receiver.

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 flathead screwdriver
•Multimeter

Parts Required

•CR2032 battery

Related Faults

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Diagnostic Steps

1
Inspect the key fob for physical damage or signs of wear.
2
Check the battery voltage using a multimeter; replace if below 3V.
3
Reprogram the key fob using the vehicle's onboard programming procedure.
4
Verify if the vehicle's receiver is functioning correctly by checking with a second key fob, if available.
5
Inspect the vehicle's wiring and connections related to the key fob receiver.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is in a safe location with the engine off.
Disconnect the vehicle battery to prevent any electrical issues.

2. Replace Key Fob Battery

Tools Required: Small flathead screwdriver, new CR2032 battery.
Using the flathead screwdriver, gently pry open the key fob casing.
Remove the old battery, noting the orientation (positive side up).
Insert the new CR2032 battery in the same orientation.
Snap the key fob casing back together securely.

3. Reprogram Key Fob

Tools Required: None.
Sit in the driver’s seat and close all doors.
Insert the key into the ignition and turn to the "On" position (do not start the engine).
Turn the key back to "Off" and remove it.
Press the "Lock" button on the key fob. This should establish a connection with the vehicle.
Repeat this process for a total of 8 seconds, turning the key multiple times if necessary, until you hear a chime.
Test the key fob to ensure it now works properly.

4. Verify Receiver Functionality

Tools Required: None.
If a second key fob is available, test it to see if it successfully locks/unlocks the doors and starts the vehicle.
If the second key fob also fails, the issue may lie with the vehicle's key fob receiver.