2021 Ford Explorer Won't Start

Resolve Starting Issues with Your 2021 Ford Explorer

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Reviewed by
Aisha
Written by RepairPal Car Genius
Updated January 14, 2025
0%
38% chance it's the
Battery
0%
27% chance it's the
Alternator
0%
20% chance it's the
Starter
0%
15% chance it's
Something else
The most common reasons a 2021 Ford Explorer won't start are a dead battery, an alternator problem, or failed starter.
  • Battery: A weak or failing battery can result in difficulty starting the engine and electrical system malfunctions.
  • Alternator: A failing alternator can result in insufficient electrical power, leading to battery drain and electrical system malfunctions.
  • Starter: A faulty starter motor or a weak battery can prevent the engine from cranking properly, leading to starting issues.
Proper diagnosis will determine the exact cause of your symptom, saving you money on unnecessary repairs. The diagnostic experts at RepairPal Certified shops have the right tools and experience to solve any symptom.

What are the initial diagnostic steps to take for a 2021 Ford Explorer that won't start?

When your 2021 Ford Explorer won't start, it's essential to approach the problem methodically to identify the root cause. Begin by checking the battery, as a dead or weak battery is often the most common culprit. Ensure that the battery terminals are clean and securely connected. Next, verify the fuel level in the tank; sometimes, a simple oversight can lead to starting issues. Pay attention to the dashboard lights when attempting to start the vehicle; dim or flickering lights may indicate an electrical problem. If the battery seems weak, try jump-starting the vehicle to see if it will crank. If the engine remains unresponsive, listen for any clicking sounds, which could suggest a faulty starter motor. Additionally, consider the ignition switch; if the key turns without any response, this component may need replacement. Finally, using an OBD-II scanner can help you retrieve error codes that provide further insight into the vehicle's systems. By following these steps, you can effectively diagnose and address the starting issues with your Ford Explorer.

What are the common problems that could cause a 2021 Ford Explorer to not start?

When your 2021 Ford Explorer refuses to start, it can be frustrating, but understanding the common problems can help you troubleshoot effectively. One of the first things to check is the battery; a dead or weak battery is often the culprit, especially if the vehicle has been exposed to extreme temperatures or if lights were left on. If the battery is functioning, the next step is to inspect the starter motor, as a faulty starter can prevent the engine from turning over. Additionally, issues within the fuel system, such as a clogged fuel filter or a malfunctioning fuel pump, can hinder the engine's ability to receive the necessary fuel. It's also important to consider the ignition switch, as a malfunction here can disrupt the electrical system's engagement. If the alternator is not charging the battery properly, it may lead to insufficient power for starting. Worn-out spark plugs can also be a factor, as they are essential for igniting the fuel-air mixture. Furthermore, problems with the vehicle's security system, like an immobilizer issue, can prevent the car from starting altogether. Lastly, malfunctioning sensors, including the crankshaft or camshaft position sensors, can provide incorrect data to the engine control unit, leading to starting difficulties. By systematically checking these components, you can identify and resolve the issue preventing your Explorer from starting.

How urgent is it to address the starting issue in a 2021 Ford Explorer?

When dealing with a starting issue in a 2021 Ford Explorer, understanding the urgency of the situation is crucial for any DIY enthusiast. If your vehicle fails to start completely, it is imperative to act quickly to avoid being stranded or risking further damage to the engine or electrical system. Warning lights, such as the check engine light, should not be ignored, as they often indicate underlying problems that could compromise safety or lead to costly repairs if left unaddressed. Intermittent starting issues, while seemingly less urgent, can signal deeper mechanical concerns that may escalate over time, making prompt investigation essential. Additionally, any unusual sounds or smells during the starting process warrant immediate attention, as they could point to serious mechanical failures. Regular maintenance is also a key factor; neglecting routine checks can lead to diminished vehicle performance and reliability. In summary, addressing starting issues in your Ford Explorer without delay is vital to ensure safety, prevent further complications, and maintain the vehicle's overall health.

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