my Ford Explorer key fob won't unlock the doors what to do

Ford Explorer Fifth Generation (2011-2019)

Error Codes

30 minutes

Time

medium

Difficulty

medium

Severity

3 min read

513 words

Problem Statement

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

Affected Component

Electrical

Estimated Time

30 minutes

⚠️ Safety Warnings

Important safety information - read before proceeding

•Be cautious when using tools to avoid injury or damage to components.

Symptoms

•Key fob buttons do not respond when pressed
•Vehicle doors do not unlock remotely
•LED light on key fob does not illuminate when buttons are pressed
•Unlocking doors manually works without issues
•Possible weak or dead battery in the key fob

Diagnostic Steps

1
Inspect the key fob for physical damage or wear.
2
Check the battery level of the key fob using a multimeter or by replacing the battery.
3
Attempt to reprogram the key fob using the vehicle's manual instructions.
4
Verify the vehicle's remote entry system is functioning by testing other remotes (if available).
5
Scan the vehicle's onboard diagnostics (OBD-II) for any related error codes.

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

•Flathead screwdriver
•Small Phillips screwdriver
•Multimeter (optional)

Parts Required

•CR2032 battery

Related Faults

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Diagnostic Steps

1
Inspect the key fob for physical damage or wear.
2
Check the battery level of the key fob using a multimeter or by replacing the battery.
3
Attempt to reprogram the key fob using the vehicle's manual instructions.
4
Verify the vehicle's remote entry system is functioning by testing other remotes (if available).
5
Scan the vehicle's onboard diagnostics (OBD-II) for any related error codes.

Solution

1. Preparation

Gather necessary tools: flathead screwdriver, small Phillips screwdriver, and a new battery (CR2032 or as specified in the manual).
Ensure the vehicle is in a secure area with no distractions.

2. Replace Key Fob Battery

Open the Key Fob:
- Use a flathead 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.
- Carefully lift the old battery out using the screwdriver or your fingers.
Install the New Battery:
- Insert the new battery in the same orientation as the old one.
- Ensure it sits snugly in place and makes good contact with the terminals.
Reassemble the Key Fob:
- Align the two halves of the key fob and press them together until they click securely.

3. Reprogram the Key Fob (if necessary)

Enter Programming Mode:
- Insert the key into the ignition and turn it to the "On" position (not starting the engine).
- Turn the key back to "Off" and remove it.
- Repeat this process 8 times within 10 seconds, ending in the "On" position.
Program the Key Fob:
- Press any button on the key fob within 30 seconds of entering programming mode.
- The locks should cycle to confirm successful programming.
Exit Programming Mode:
- Turn the ignition back to "Off" to exit programming mode.