2015 Ford Mustang Won't Start

Resolve Starting Issues with Your 2015 Ford Mustang

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Reviewed by
Devin Cabugcal
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 2015 Ford Mustang 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 2015 Ford Mustang won't start?

When your 2015 Ford Mustang refuses to start, begin by checking the battery, as a dead or weak battery is a common culprit. If the battery appears fine, inspect the starter motor to ensure it is operational, as a malfunctioning starter can prevent the engine from turning over. Next, verify that there is sufficient fuel in the tank, as running out of gas can often be overlooked. Following this, examine the ignition system, including spark plugs and ignition coils, since faulty components here can lead to starting failures. Utilizing an OBD-II scanner to check for error codes can provide further insights into any underlying issues. Additionally, inspect the fuel system components, such as the fuel pump and filter, to ensure proper fuel delivery to the engine. Lastly, consider whether the engine immobilizer system is activated, as this can also prevent the vehicle from starting. By methodically working through these steps, you can effectively diagnose and address the starting issues with your Mustang.

What are the common problems that could cause a 2015 Ford Mustang to not start?

When troubleshooting starting issues with a 2015 Ford Mustang, it's essential 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, poor connections, or a faulty battery itself. If the battery checks out, the next component to examine is the starter motor, which may fail to engage properly, preventing the engine from turning over. Additionally, the fuel system plays a critical role; a clogged fuel filter or malfunctioning fuel pump can hinder fuel delivery, making it impossible for the engine to start. The ignition system is another key area to investigate, as faulty spark plugs, ignition coils, or a defective ignition switch can disrupt the starting process. Furthermore, a failing alternator may not adequately charge the battery, leading to insufficient power for starting. Lastly, don't overlook the sensors, such as the crankshaft or camshaft position sensors, which can send incorrect data to the vehicle's computer, complicating the starting issue. By systematically addressing these potential problems, you can effectively diagnose and resolve the starting difficulties with your Mustang.

How urgent is it to address the starting issue in a 2015 Ford Mustang?

When dealing with a starting issue in a 2015 Ford Mustang, the urgency of the situation cannot be overstated. If your vehicle is showing signs of failure to start consistently, or if you hear unusual noises or see smoke, it is essential to act quickly. These symptoms not only indicate a potential mechanical failure but also pose significant safety risks, especially if they occur while driving. Ignoring these issues could lead to being stranded in unsafe or inconvenient locations, which can be both stressful and dangerous. Moreover, delaying repairs can result in more extensive damage, leading to costly repairs that could have been avoided with timely intervention. Therefore, it is crucial to prioritize addressing any starting issues promptly to ensure your safety, maintain the integrity of your vehicle, and avoid the hassle of unexpected breakdowns.

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