2021 Ford Ranger Won't Start

Resolve Starting Issues for Your 2021 Ford Ranger

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Reviewed by
Bo Fader
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 Ranger 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 when a 2021 Ford Ranger won't start?

When your 2021 Ford Ranger refuses to start, the first step is to check the battery, as a dead or low battery is a common culprit. If the battery appears weak, consider jump-starting the vehicle or testing it with a multimeter to confirm its voltage. Next, ensure that there is sufficient fuel in the tank, as running out of gas can easily lead to starting issues. If both the battery and fuel levels are adequate, turn your attention to the ignition switch; a malfunction here can prevent the engine from cranking. Following this, inspect the starter motor to see if it engages when you attempt to start the vehicle, as a faulty starter can also be a significant factor. To gain further insight, use an OBD-II scanner to check for any error codes that might indicate specific problems. Lastly, don’t overlook the spark plugs; ensure they are in good condition and properly connected, as worn or faulty spark plugs can hinder the starting process. By systematically addressing these areas, you can effectively diagnose and potentially resolve the starting issue with your Ford Ranger.

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

When troubleshooting a 2021 Ford Ranger that won't start, it's crucial to consider several common problems that could be at play. A weak or dead battery is often the first suspect, as it can stem from age, a faulty battery, or issues within the charging system. If the battery checks out, the next area to investigate is the fuel system; a clogged fuel filter or a malfunctioning fuel pump can prevent fuel from reaching the engine, while running out of fuel is a straightforward but often overlooked issue. Additionally, the ignition system plays a vital role in starting the vehicle; faulty spark plugs or ignition coils can disrupt the ignition process. If the engine cranks but doesn't start, the starter motor may be malfunctioning, which is another common culprit. Furthermore, a faulty alternator can lead to battery drainage, exacerbating starting issues. It's also important to consider the role of various sensors, such as the crankshaft and camshaft position sensors, which can affect the engine's ability to start. Lastly, electrical issues, including problems with wiring or fuses, can complicate the situation. By systematically diagnosing these areas, you can effectively identify and resolve the starting issue with your Ford Ranger.

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

When dealing with a starting issue in a 2021 Ford Ranger, the urgency of addressing the problem cannot be overstated. Ignoring symptoms such as difficulty starting or intermittent stalling can lead to serious safety concerns, especially if the vehicle fails to start in critical situations. Moreover, a malfunctioning starting system can compromise the overall functionality of the vehicle, resulting in inconvenient breakdowns that could leave you stranded. From a DIY perspective, tackling these issues early not only helps maintain the vehicle's reliability but also prevents more extensive and costly repairs down the line. Additionally, if your Ranger is still under warranty, prompt action ensures that any necessary repairs are covered, saving you from unexpected expenses. Therefore, it is crucial to assess and address any starting issues as soon as they arise to safeguard both your safety and your investment in the vehicle.

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2021 Ford Ranger Won't Start: Common Causes & Solutions