my Ford F-150 won't remote start, how can I troubleshoot this

Ford F-150 13th Generation (2015-2020)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

513 words

Problem Statement

Learn how to troubleshoot and fix remote start issues on your Ford F-150. 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 before working on electrical systems to avoid shorts.

Symptoms

•Remote start button does not respond when pressed
•Check engine light illuminated
•Door locks do not engage when attempting to remote start
•Vehicle does not crank or start
•Security system warning light may be flashing

Diagnostic Steps

1
Check the vehicle's battery voltage using a multimeter to ensure it has sufficient charge.
2
Inspect the remote key fob for battery condition and physical damage.
3
Scan the vehicle's onboard diagnostics (OBD-II) for any trouble codes related to the engine, ignition, or security systems.
4
Verify that all doors, hood, and trunk are closed securely; remote start will not function if any are ajar.
5
Test the remote start system from a different location to rule out range issues.
6
Confirm that the vehicle’s security system is functioning properly and not preventing the remote start.

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
•Flat-head screwdriver

Parts Required

•Key fob battery (CR2032)

Related Faults

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Diagnostic Steps

1
Check the vehicle's battery voltage using a multimeter to ensure it has sufficient charge.
2
Inspect the remote key fob for battery condition and physical damage.
3
Scan the vehicle's onboard diagnostics (OBD-II) for any trouble codes related to the engine, ignition, or security systems.
4
Verify that all doors, hood, and trunk are closed securely; remote start will not function if any are ajar.
5
Test the remote start system from a different location to rule out range issues.
6
Confirm that the vehicle’s security system is functioning properly and not preventing the remote start.

Solution

1. Preparation

Gather tools: OBD-II scanner, multimeter, flat-head screwdriver, and a replacement battery for the key fob if needed.
Ensure the vehicle is parked in a safe location with no obstructions.

2. Check Key Fob Battery

Remove the battery cover from the key fob using a flat-head screwdriver.
Replace the old battery with a new one (commonly CR2032) ensuring the polarity is correct.
Reassemble the key fob and test the remote start function.

3. Inspect Battery Voltage

Open the hood and locate the battery.
Use a multimeter to measure the voltage; it should be between 12.4V to 12.7V for a healthy battery.
If the battery voltage is low, jump-start the vehicle or replace the battery as necessary.

4. Verify Door and Hood Sensors

Check that all doors, including the hood and trunk, are closed properly.
If any door is slightly ajar, the remote start will be disabled.
Test the door sensors with a multimeter to ensure they are functioning properly.

5. Scan for Trouble Codes

Connect an OBD-II scanner to the vehicle's diagnostic port.
Retrieve any trouble codes that may indicate issues with the engine, ignition, or security systems.
Address any codes that appear relevant to the remote start function.