my Ford Explorer's keyless entry not working what should I check

Ford Explorer Sixth Generation (2020-present)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

4 min read

604 words

Problem Statement

Learn how to diagnose and fix keyless entry issues in Ford Explorer. 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 before inspecting electrical components to prevent short circuits.

Symptoms

•Key fob not responding
•Check keyless entry system warning light illuminated on the dashboard
•No sound or feedback from the vehicle when buttons are pressed
•Inability to lock or unlock doors with key fob
•Manual locks functioning normally
•Battery in the key fob is dead

Diagnostic Steps

1
Inspect the key fob battery and replace it if necessary.
2
Check for any physical damage or wear on the key fob.
3
Use an OBD-II scanner to check for any related error codes in the vehicle's electronic systems.
4
Test the keyless entry receiver by checking the connections and wiring for damage.
5
Ensure that the vehicle's battery is fully charged, as low voltage can affect the keyless entry system.
6
Confirm that the vehicle is not in 'valet mode,' which can disable keyless entry functions.

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
•Multimeter

Parts Required

•Key fob battery (CR2032 or as specified for the vehicle)

Related Faults

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Diagnostic Steps

1
Inspect the key fob battery and replace it if necessary.
2
Check for any physical damage or wear on the key fob.
3
Use an OBD-II scanner to check for any related error codes in the vehicle's electronic systems.
4
Test the keyless entry receiver by checking the connections and wiring for damage.
5
Ensure that the vehicle's battery is fully charged, as low voltage can affect the keyless entry system.
6
Confirm that the vehicle is not in 'valet mode,' which can disable keyless entry functions.

Solution

1. Preparation

Gather necessary tools: flathead screwdriver, multimeter, and new key fob battery.
Ensure the vehicle is in a safe, well-lit area with the engine off.

2. Replace Key Fob Battery

Sub-step 1: Use a flathead screwdriver to gently pry open the key fob casing without damaging it.
Sub-step 2: Remove the old battery and note the orientation of the battery (positive and negative sides).
Sub-step 3: Insert the new battery in the same orientation as the old one.
Sub-step 4: Reassemble the key fob casing securely.

3. Inspect Keyless Entry Receiver

Sub-step 1: Locate the keyless entry receiver, usually found near the rearview mirror or under the dash.
Sub-step 2: Disconnect the wiring harness and inspect for frayed wires or corrosion.
Sub-step 3: Use a multimeter to check for continuity in the wiring. Repair or replace any damaged wires as needed.
Sub-step 4: Reconnect the wiring harness securely.

4. Check Vehicle Battery

Sub-step 1: Open the hood and inspect the vehicle battery for corrosion or loose connections.
Sub-step 2: Ensure the battery terminals are clean and tight. Clean any corrosion if necessary.
Sub-step 3: If the battery is low, jump-start the vehicle or replace the battery if it is old.

5. Reset Keyless Entry System

Sub-step 1: Turn the ignition key to the "ON" position (do not start the engine).
Sub-step 2: Press the lock and unlock buttons on the key fob simultaneously for 5 seconds.
Sub-step 3: Turn the ignition to the "OFF" position and then back to "ON" to complete the reset.