how to troubleshoot my Ford Explorer if the remote start isn't working

Ford Explorer Sixth Generation (2020-present)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

480 words

Problem Statement

Learn how to troubleshoot and fix remote start issues in Ford Explorer. Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Electrical

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery when working on electrical components to avoid short circuits.

Symptoms

•Remote start not engaging when the button is pressed
•No audible confirmation (horn honk) when attempting to start remotely
•Check engine light illuminated
•Vehicle battery low or dead
•Key fob not responding to other functions (lock/unlock)
•Security indicator light flashing on the dashboard

Diagnostic Steps

1
Check the key fob battery by opening the fob and testing or replacing the battery.
2
Scan the vehicle's OBD-II port for any error codes that may indicate issues with the engine or security system.
3
Verify that the vehicle is in park and that all doors are closed, as these are safety requirements for remote start.
4
Inspect the vehicle’s battery voltage to ensure it is at an adequate level for remote start functionality.
5
Test the key fob range by standing closer to the vehicle and attempting to engage the remote start.
6
Check for any blown fuses related to the remote start system in the fuse box.

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 screwdriver
•Fuse puller

Parts Required

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

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Symptoms

•Remote start not engaging when the button is pressed

•No audible confirmation (horn honk) when attempting to start remotely

•Check engine light illuminated

•Vehicle battery low or dead

•Key fob not responding to other functions (lock/unlock)

•Security indicator light flashing on the dashboard

Diagnostic Steps

1
Check the key fob battery by opening the fob and testing or replacing the battery.
2
Scan the vehicle's OBD-II port for any error codes that may indicate issues with the engine or security system.
3
Verify that the vehicle is in park and that all doors are closed, as these are safety requirements for remote start.
4
Inspect the vehicle’s battery voltage to ensure it is at an adequate level for remote start functionality.
5
Test the key fob range by standing closer to the vehicle and attempting to engage the remote start.
6
Check for any blown fuses related to the remote start system in the fuse box.

Solution

1. Key Fob Battery Replacement

Sub-steps:
1. Open the key fob using a small screwdriver to pry apart the two halves carefully.
2. Remove the old battery and install a new CR2032 battery, ensuring correct polarity.
3. Reassemble the key fob and test the remote start function.

2. OBD-II Code Clear

Sub-steps:
1. Connect an OBD-II scanner to the vehicle's diagnostic port.
2. Read and document any error codes related to the engine or security system.
3. Clear the codes and attempt to use the remote start again.

3. Battery Voltage Check

Sub-steps:
1. Use a multimeter to measure the vehicle battery voltage; it should be at least 12.4 volts.
2. If the voltage is low, charge or replace the battery as needed.
3. Retest the remote start after resolving the battery issue.

4. Security System Check

Sub-steps:
1. Ensure that all doors are securely closed and that the vehicle is in the "Park" position.
2. Check the security indicator light on the dashboard; if it is flashing, the vehicle may be in security lock mode.
3. Follow the manufacturer's instructions to reset the security system if necessary.

5. Fuse Inspection

Sub-steps:
1. Locate the fuse box (usually under the dashboard or in the engine compartment).
2. Identify the fuse for the remote start system and visually inspect it.
3. Replace any blown fuses with the same amperage rating.

Tools Required:

OBD-II scanner
Multimeter
Small screwdriver
Fuse puller (if needed)

Parts Required:

CR2032 battery for key fob
Replacement fuses (as needed)

Estimated Repair Time: 1-2 hours

Safety Warnings:

Disconnect the battery when working on electrical components to avoid short circuits.