why does my Ford Explorer remote start not work sometimes

Ford Explorer Sixth Generation (2020-present)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

519 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 components to avoid shorts.

Symptoms

•Remote start function fails to activate
•Engine cranks but does not start
•"Remote Start Disabled" message appears on the dashboard
•Check engine light illuminated
•Remote key fob unresponsive at times
•Unusual clicking noise when attempting to start remotely

Diagnostic Steps

1
Scan the vehicle’s onboard diagnostics (OBD-II) for any error codes.
2
Check the battery voltage of the remote key fob and replace if low.
3
Inspect the vehicle's battery for proper voltage and connection.
4
Verify the status of the vehicle’s security system and ensure it’s not preventing remote start.
5
Check for any blown fuses related to the remote start system.
6
Test the remote start function using the key fob while in different locations to rule out distance issues.

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
•Fuse puller
•Screwdriver set

Parts Required

•CR2032 battery for key fob
•Replacement fuses (if needed)

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Diagnostic Steps

1
Scan the vehicle’s onboard diagnostics (OBD-II) for any error codes.
2
Check the battery voltage of the remote key fob and replace if low.
3
Inspect the vehicle's battery for proper voltage and connection.
4
Verify the status of the vehicle’s security system and ensure it’s not preventing remote start.
5
Check for any blown fuses related to the remote start system.
6
Test the remote start function using the key fob while in different locations to rule out distance issues.

Solution

1. Preparation

Tools Required: OBD-II scanner, multimeter, fuse puller, screwdriver set
Ensure the vehicle is parked in a safe location and the engine is off.
Disconnect the battery to prevent electrical shorts during inspection.

2. Inspect Remote Key Fob

Sub-steps:
1. Open the remote key fob using a small screwdriver.
2. Remove the old battery and replace it with a new one (CR2032 or equivalent).
3. Reassemble the key fob and test the remote start function.

3. Check Vehicle Battery

Sub-steps:
1. Use a multimeter to check the battery voltage; it should read between 12.4V and 12.7V.
2. Inspect battery terminals for corrosion; clean if necessary.
3. Ensure connections are tight; replace the battery if voltage is low.

4. Inspect Fuses

Sub-steps:
1. Locate the fuse box (usually under the dashboard or in the engine compartment).
2. Use a fuse puller to remove and inspect the fuse related to the remote start system (refer to the owner’s manual for the specific fuse).
3. Replace any blown fuses with the same amperage rating.

5. Security System Verification

Sub-steps:
1. Check if the vehicle’s security system is engaged (e.g., doors locked).
2. Disable any aftermarket alarms or immobilizers temporarily to see if they are causing interference.
3. Consult the vehicle manual for specific instructions on resetting the security system if necessary.