how to troubleshoot a Ford Explorer Sixth Generation (2020-present) that won’t unlock with the key f...

Ford Explorer Sixth Generation (2020-present)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

558 words

Problem Statement

Learn how to troubleshoot and fix a Ford Explorer key fob that won't unlock the vehicle. Step-by-step guide with diagnostic steps and solutions.

Affected Component

Electrical

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems to avoid shorts or injury.

Symptoms

•Key fob buttons do not respond when pressed
•Vehicle does not unlock or lock remotely
•Red LED light on the key fob does not illuminate
•Manual door locks function normally
•Check engine light illuminated

Diagnostic Steps

1
Replace the battery in the key fob with a new one and test its functionality.
2
Inspect the key fob for physical damage or water exposure.
3
Use a secondary key fob to determine if the issue is with the original fob or the vehicle.
4
Scan the vehicle with an OBD-II scanner to check for any fault codes related to the body control module.
5
Check the vehicle's battery voltage to ensure it is within acceptable range (12.4V or higher).
6
Verify that the vehicle's door locks are functioning correctly when using the manual key.

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

•OBD-II scanner
•Small flathead screwdriver
•Socket set
•Screwdriver set

Parts Required

•CR2032 key fob battery

Related Faults

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Diagnostic Steps

1
Replace the battery in the key fob with a new one and test its functionality.
2
Inspect the key fob for physical damage or water exposure.
3
Use a secondary key fob to determine if the issue is with the original fob or the vehicle.
4
Scan the vehicle with an OBD-II scanner to check for any fault codes related to the body control module.
5
Check the vehicle's battery voltage to ensure it is within acceptable range (12.4V or higher).
6
Verify that the vehicle's door locks are functioning correctly when using the manual key.

Solution

1. Preparation

Gather the necessary tools and replacement parts.
Ensure the vehicle is in a safe location and the ignition is turned off.
Disconnect the vehicle's battery to prevent any electrical issues during repair.

2. Replace Key Fob Battery

Tools Required: Small flathead screwdriver, new key fob battery (typically CR2032).
Open the key fob using the flathead screwdriver in the designated slot.
Remove the old battery and insert the new battery, ensuring the positive side is facing the correct direction.
Reassemble the key fob and test it to see if it functions correctly.

3. Check Vehicle's Body Control Module

Tools Required: OBD-II scanner.
Connect the OBD-II scanner to the vehicle's diagnostic port.
Scan for any fault codes related to the body control module (BCM) and take note of any codes found.
If codes are present, follow manufacturer guidelines for troubleshooting those specific codes.

4. Inspect Door Lock Mechanism

Tools Required: Socket set, screwdriver set.
Remove the door panel to access the locking mechanism.
Inspect the wiring and connectors for any signs of damage or corrosion.
Check the actuator functionality by applying voltage directly to the actuator to see if it responds.

5. Reconnect Battery and Test

Reconnect the vehicle's battery.
Test the key fob once more to see if the unlocking mechanism now works.