my Ford Explorer's remote start isn't working what could be the issue

Ford Explorer Sixth Generation (2020-present)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

542 words

Problem Statement

Learn how to diagnose and fix remote start 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 battery before working on electrical systems to prevent shorts.
•Ensure all vehicle doors and the hood are closed during remote start tests.

Symptoms

•Remote start button does not respond when pressed
•Vehicle does not start or crank
•Security light on the dashboard is illuminated
•Check engine light is on
•Remote key fob battery is low or dead
•Vehicle's doors do not lock or unlock using the remote key fob

Diagnostic Steps

1
Check the battery in the remote key fob for sufficient charge.
2
Verify that the vehicle is in an appropriate state for remote start (e.g., doors closed, hood closed, vehicle not running).
3
Scan the vehicle's onboard computer for error codes using an OBD-II scanner.
4
Inspect the remote start system's wiring and connections for any visible damage or disconnections.
5
Check the vehicle's security system to ensure it is not preventing remote start activation.
6
Test the remote key fob functionality at close range to eliminate distance interference.

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
•Multimeter
•Small flathead screwdriver
•Socket set

Parts Required

•Replacement battery for key fob (CR2032 or as specified)
•Wiring connectors (if repairs are necessary)

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Diagnostic Steps

1
Check the battery in the remote key fob for sufficient charge.
2
Verify that the vehicle is in an appropriate state for remote start (e.g., doors closed, hood closed, vehicle not running).
3
Scan the vehicle's onboard computer for error codes using an OBD-II scanner.
4
Inspect the remote start system's wiring and connections for any visible damage or disconnections.
5
Check the vehicle's security system to ensure it is not preventing remote start activation.
6
Test the remote key fob functionality at close range to eliminate distance interference.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked in a well-ventilated area.
Disconnect the vehicle's battery to prevent any electrical shorts during repair.

2. Replace Key Fob Battery

Tools Required: Small flathead screwdriver, replacement battery (CR2032 or as specified).
Open the key fob using the flathead screwdriver to pry apart the casing.
Remove the old battery and replace it with the new one, ensuring the polarity is correct.
Snap the key fob back together securely.

3. Inspect Remote Start Wiring

Tools Required: Multimeter, socket set.
Remove any panels necessary to access the remote start wiring harness.
Use a multimeter to check for continuity and proper voltage in the wiring.
Repair or replace any damaged wires or connectors found during the inspection.

4. Reset Security System

Tools Required: OBD-II scanner.
Reconnect the battery.
Use the OBD-II scanner to clear any security-related error codes.
Follow the manufacturer's instructions to reset the security system if needed.

5. Test Remote Start Functionality

After completing repairs, press the remote start button on the key fob to test its functionality.
Ensure the vehicle starts and runs for the expected duration.