how to troubleshoot a Ford Explorer Fifth Generation (2011-2019) that won't respond to the key fob

Ford Explorer Fifth Generation (2011-2019)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

563 words

Problem Statement

Learn how to troubleshoot and fix key fob issues for Ford Explorer 2011-2019. Step-by-step guide with diagnostic steps and repair instructions.

Affected Component

Electrical

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

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

Symptoms

•Key fob buttons do not unlock or lock the doors.
•Vehicle does not start when the key fob is pressed.
•Warning lights may illuminate on the dashboard.
•The key fob may be unresponsive to manual programming attempts.
•Vehicle security system may be activated without reason.

Diagnostic Steps

1
Check the battery in the key fob for voltage using a multimeter.
2
Inspect the key fob for physical damage or water intrusion.
3
Attempt to manually unlock the vehicle using the physical key.
4
Check the vehicle's fuse related to the keyless entry system using a fuse tester.
5
Scan the vehicle's onboard computer for any error codes using an OBD-II scanner.
6
Verify the vehicle's proximity sensors and receiver are functioning properly.

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

•Multimeter
•Small flat-head screwdriver
•Pliers
•OBD-II scanner
•Fuse tester

Parts Required

•Key fob battery (CR2032)
•Replacement fuses (as needed)

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Diagnostic Steps

1
Check the battery in the key fob for voltage using a multimeter.
2
Inspect the key fob for physical damage or water intrusion.
3
Attempt to manually unlock the vehicle using the physical key.
4
Check the vehicle's fuse related to the keyless entry system using a fuse tester.
5
Scan the vehicle's onboard computer for any error codes using an OBD-II scanner.
6
Verify the vehicle's proximity sensors and receiver are functioning properly.

Solution

1. Key Fob Battery Replacement

Sub-steps:
1. Open the key fob using a small flat-head screwdriver to pry apart the two halves.
2. Remove the old battery, noting the orientation of the positive (+) side.
3. Insert a new battery (CR2032 or equivalent) in the same orientation.
4. Snap the fob back together securely.

2. Inspect and Replace Fuses

Sub-steps:
1. Locate the fuse box, typically found under the dashboard or in the engine compartment.
2. Identify the fuse related to the keyless entry system (refer to the owner's manual for the correct fuse).
3. Remove the fuse using pliers and check for continuity.
4. Replace the fuse with one of the same amperage if it is blown.
5. Reinstall the fuse box cover.

3. Program Key Fob (if necessary)

Sub-steps:
1. Sit in the driver's seat with all doors closed.
2. Insert the key into the ignition and turn to the "On" position without starting the engine.
3. Press the "Lock" button on the key fob within 10 seconds.
4. Turn the ignition to the "Off" position to complete the programming.
5. Test the key fob to ensure functionality.

4. Check Proximity Sensors

Sub-steps:
1. Inspect the keyless entry antenna located in the vehicle, typically near the front of the roof or around the ignition area.
2. Ensure there are no obstructions or damage to the sensors.
3. If necessary, replace the proximity sensor or antenna to restore functionality.