how do I fix my Ford Explorer's remote start not working

Ford Explorer Sixth Generation (2020-present)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

579 words

Problem Statement

Learn how to diagnose and fix the remote start issue in your Ford Explorer. Step-by-step guide with symptoms, diagnostic steps, and solutions.

Affected Component

Electrical

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect battery before working on electrical systems to prevent shorts.
•Ensure the vehicle is in park and the parking brake is engaged before testing remote start.

Symptoms

•Remote start button does not activate the engine
•No response from the key fob when attempting remote start
•Check engine light illuminated on the dashboard
•Vehicle security system indicator flashing
•Engine cranks but does not start when using remote start

Diagnostic Steps

1
Verify the key fob battery is functional by testing the lock/unlock buttons.
2
Check if the vehicle is in a suitable environment for remote start (e.g., doors closed, hood shut).
3
Scan the vehicle's onboard diagnostics (OBD-II) for any error codes related to the remote start system.
4
Inspect the vehicle's battery voltage to ensure it is within normal operating range.
5
Examine fuses related to the remote start and vehicle ignition system for any blown fuses.
6
Test the remote start system using the vehicle's onboard settings to ensure it is enabled.

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
•Fuse puller or needle-nose pliers
•OBD-II scanner

Parts Required

•Key fob battery (CR2032 or equivalent)
•Replacement fuses (if needed)

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Diagnostic Steps

1
Verify the key fob battery is functional by testing the lock/unlock buttons.
2
Check if the vehicle is in a suitable environment for remote start (e.g., doors closed, hood shut).
3
Scan the vehicle's onboard diagnostics (OBD-II) for any error codes related to the remote start system.
4
Inspect the vehicle's battery voltage to ensure it is within normal operating range.
5
Examine fuses related to the remote start and vehicle ignition system for any blown fuses.
6
Test the remote start system using the vehicle's onboard settings to ensure it is enabled.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked in a safe location and the engine is off.
Disconnect the negative battery terminal to prevent electrical shorts.

2. Battery Check

Tools Required: Multimeter
Use a multimeter to check the battery voltage. It should be above 12.4 volts.
If the battery voltage is low, charge or replace the battery before proceeding.

3. Key Fob Inspection

Tools Required: None
Open the key fob and replace the battery if it is weak or dead (usually CR2032 or similar).
Reassemble the key fob and test the remote start function again.

4. Fuse Inspection

Tools Required: Fuse puller or needle-nose pliers
Locate the fuse box (usually under the dashboard or in the engine compartment).
Check the fuses related to the remote start and ignition system. Replace any blown fuses with the correct amperage rating (check the diagram on the fuse box cover).

5. Reconnect Battery

Reconnect the negative battery terminal securely.
Start the vehicle normally to ensure the battery connection is stable.

6. System Reset (if necessary)

Tools Required: OBD-II scanner
If there are persistent error codes, use an OBD-II scanner to clear any DTCs (Diagnostic Trouble Codes) that may be inhibiting the remote start function.
Follow the scanner’s prompts to erase the codes.

7. Testing Remote Start

With the vehicle in park and the doors closed, press the remote start button on the key fob.
Confirm that the engine starts successfully.