how to troubleshoot Ford Explorer key fob not working for remote start

Ford Explorer Sixth Generation (2020-present)

Error Codes

30 minutes to 1 hour

Time

medium

Difficulty

medium

Severity

3 min read

541 words

Problem Statement

Learn how to troubleshoot and fix the Ford Explorer key fob not working for remote start. Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Electrical

Estimated Time

30 minutes to 1 hour

⚠️ Safety Warnings

Important safety information - read before proceeding

•Handle the key fob gently to avoid damaging internal components
•Ensure the vehicle is in a safe location during reprogramming
•Disconnect the battery with caution; ensure the vehicle is off and keys are removed

Symptoms

•Key fob buttons are unresponsive
•Remote start feature does not activate
•Indicator lights on the key fob do not illuminate when pressed
•Check engine light may be illuminated
•Vehicle starts normally with the physical key but not via remote start

Diagnostic Steps

1
Replace the battery in the key fob to ensure it has sufficient power
2
Check for any physical damage to the key fob, including broken buttons or casing
3
Attempt to reprogram the key fob following the manufacturer's guidelines
4
Ensure that the vehicle's security system is functioning properly and that no faults are present
5
Use an OBD-II scanner to check for any diagnostic trouble codes (DTCs) related to the remote start system

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

Parts Required

•Key fob battery (CR2032)

Related Faults

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Diagnostic Steps

1
Replace the battery in the key fob to ensure it has sufficient power
2
Check for any physical damage to the key fob, including broken buttons or casing
3
Attempt to reprogram the key fob following the manufacturer's guidelines
4
Ensure that the vehicle's security system is functioning properly and that no faults are present
5
Use an OBD-II scanner to check for any diagnostic trouble codes (DTCs) related to the remote start system

Solution

1. Preparation

Gather required tools and parts.
Ensure the vehicle is in a safe environment and parked on a flat surface.

2. Replace Key Fob Battery

Sub-steps:
1. Use a small flat-head screwdriver to carefully pry open the key fob casing.
2. Remove the old battery (commonly CR2032) and insert a new one, ensuring correct polarity.
3. Snap the key fob casing back together securely.
Tools Required: Small flat-head screwdriver
Safety Warnings: Handle the key fob gently to avoid damaging internal components.

3. Check for Physical Damage

Sub-steps:
1. Inspect the key fob for cracks or broken buttons.
2. If damage is found, consider replacing the key fob with a new one.
Tools Required: None
Safety Warnings: None

4. Reprogram Key Fob

Sub-steps:
1. Insert the key into the ignition and turn it to the "On" position without starting the engine.
2. Press the "Lock" button on the key fob for 5 seconds.
3. Turn the key to the "Off" position and then back to "On" within 10 seconds.
4. Repeat the process two more times to finalize reprogramming.
Tools Required: None
Safety Warnings: Ensure the vehicle is in a safe location during reprogramming.

5. Check Vehicle Security System

Sub-steps:
1. Inspect the vehicle’s security system for any visible issues or alerts.
2. Reset the security system if necessary by disconnecting the battery for 15 minutes, then reconnecting it.
Tools Required: None
Safety Warnings: Disconnect the battery with caution; ensure the vehicle is off and keys are removed.