how to troubleshoot my Ford Explorer remote start not working?

Ford Explorer Fifth Generation (2011-2019)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

543 words

Problem Statement

Learn how to troubleshoot and fix the remote start issue on your Ford Explorer. Step-by-step guide with 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 avoid shocks or shorts.

Symptoms

•Remote start button on the key fob does not respond
•Security light blinking on the dashboard
•Engine does not crank or start
•Check engine light illuminated
•Key fob battery appears to be functional (other buttons working)

Diagnostic Steps

1
Verify that the key fob battery is functional by testing other buttons.
2
Check for any error codes using an OBD-II scanner to identify potential issues.
3
Inspect the vehicle's battery voltage to ensure it is not low.
4
Confirm that all doors, hoods, and trunks are closed securely, as remote start will not function if any are open.
5
Test the remote start feature using a different key fob if available, to rule out a faulty fob.
6
Check the remote start system fuse for continuity or damage.
7
Inspect the vehicle's security system for any active alerts or malfunctions.

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
•Fuse puller or needle-nose pliers

Parts Required

•Key fob battery (CR2032)
•Replacement fuse (if applicable)

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Diagnostic Steps

1
Verify that the key fob battery is functional by testing other buttons.
2
Check for any error codes using an OBD-II scanner to identify potential issues.
3
Inspect the vehicle's battery voltage to ensure it is not low.
4
Confirm that all doors, hoods, and trunks are closed securely, as remote start will not function if any are open.
5
Test the remote start feature using a different key fob if available, to rule out a faulty fob.
6
Check the remote start system fuse for continuity or damage.
7
Inspect the vehicle's security system for any active alerts or malfunctions.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked in a well-ventilated area and the engine is off.

2. Check and Replace Key Fob Battery

Tools Required: Small flathead screwdriver, replacement battery (typically CR2032).
Carefully open the key fob using the screwdriver.
Remove the old battery and insert the new one, ensuring correct polarity.
Reassemble the key fob and test the remote start function.

3. Inspect and Replace Remote Start System Fuse

Tools Required: Fuse puller or needle-nose pliers.
Locate the fuse box (usually under the dashboard or in the engine compartment).
Identify the remote start fuse using the diagram on the fuse box cover.
Remove the fuse and inspect for any signs of damage. Replace with the same amperage fuse if necessary.

4. Check Vehicle's Battery Voltage

Tools Required: Multimeter.
Set the multimeter to the DC voltage setting.
Connect the multimeter leads to the battery terminals (red to positive, black to negative).
If the voltage is below 12.4 volts, charge or replace the battery.

5. Reset Security System

Tools Required: None.
Insert the key into the ignition and turn it to the "On" position without starting the engine.
Wait for about 10 minutes until the security light turns off, then turn the key to the "Off" position.
Try the remote start again.