how to fix the key fob not working for my Ford Explorer Fifth Generation (2011-2019)

Ford Explorer Fifth Generation (2011-2019)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

4 min read

634 words

Problem Statement

Learn how to diagnose and fix a non-working key fob for Ford Explorer (2011-2019). Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component

Electrical

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the vehicle battery if you are working on electronic components to prevent shorts.

Symptoms

•Key fob buttons do not respond
•Vehicle does not unlock or lock with remote
•"Key not detected" warning on the dashboard
•Weak or no signal when attempting to use the fob
•LED light on the fob does not illuminate when pressed

Diagnostic Steps

1
Replace the battery in the key fob to rule out power issues.
2
Inspect the key fob for physical damage or corrosion on the contacts.
3
Check the vehicle's battery voltage to ensure it is sufficiently charged.
4
Use an OBD-II scanner to check for any related error codes in the vehicle's system.
5
Reprogram the key fob using the vehicle's manual instructions.

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
•Multimeter
•OBD-II scanner (optional)

Parts Required

•CR2032 battery (or appropriate replacement battery)

Related Faults

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Diagnostic Steps

1
Replace the battery in the key fob to rule out power issues.
2
Inspect the key fob for physical damage or corrosion on the contacts.
3
Check the vehicle's battery voltage to ensure it is sufficiently charged.
4
Use an OBD-II scanner to check for any related error codes in the vehicle's system.
5
Reprogram the key fob using the vehicle's manual instructions.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure you have a replacement battery (typically CR2032).
Read the vehicle's manual for specific reprogramming instructions.

2. Replace Key Fob Battery

Open the Key Fob:
- Use a small flat-head screwdriver to gently pry open the key fob casing.
- Be careful not to damage the casing or internal components.
Remove the Old Battery:
- Take note of the battery orientation (positive and negative sides).
- Carefully remove the old battery.
Install the New Battery:
- Place the new battery in the same orientation as the old one.
- Ensure it is seated properly in the battery compartment.
Reassemble the Key Fob:
- Snap the fob casing back together securely.
- Test the key fob functions.

3. Check for Damage and Corrosion

Inspect the Key Fob Internals:
- Open the fob again if necessary and check for corrosion, especially around the battery contacts.
- Clean any corrosion with a small brush or isopropyl alcohol and a cotton swab.
Examine the Fob Housing:
- Look for any cracks or damage that may affect functionality.
- If damaged, consider replacing the fob.

4. Check Vehicle Battery Voltage

Turn Off the Vehicle:
- Ensure the vehicle is off before starting this process.
Use a Multimeter:
- Set a multimeter to DC voltage.
- Connect the red lead to the positive terminal and the black lead to the negative terminal of the vehicle's battery.
- Verify the voltage is above 12.4 volts for a healthy battery.

5. Reprogram the Key Fob

Enter Programming Mode:
- Insert the key into the ignition and turn it to the "On" position (do not start the engine).
- Turn the key to "Off" and back to "On" 8 times within 10 seconds, ending in the "On" position. You should hear a chime indicating successful entry into programming mode.
Program the Key Fob:
- Press any button on the key fob within 30 seconds.
- Wait for the chime to confirm the key fob has been programmed.
- Repeat for additional fobs if necessary.
Exit Programming Mode:
- Turn the ignition to "Off" to exit programming mode.