2016 Mercedes-Benz S65 AMG Won't Start

Resolve Starting Issues for Your 2016 Mercedes-Benz S65 AMG

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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 2016 Mercedes-Benz S65 AMG 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 2016 Mercedes-Benz S65 AMG won't start?

When your 2016 Mercedes-Benz S65 AMG refuses to start, it's essential to adopt a methodical diagnostic approach to identify the root cause. Begin by checking the battery, as a weak or dead battery is a common culprit that can easily be overlooked. Next, inspect the key fob to ensure it is functioning correctly, as a malfunction here can prevent the vehicle from recognizing the key. It's also crucial to verify that the gear is in Park or Neutral, as many vehicles are designed not to start unless they are in the correct position for safety reasons. Pay attention to any warning lights on the dashboard, as these can provide valuable clues about underlying issues. Additionally, confirm that there is sufficient fuel in the tank, as running out of gas is a straightforward yet often forgotten reason for a no-start condition. Don't forget to examine the fuses related to the starting system, as a blown fuse can disrupt the entire process. Finally, if the problem persists, using a diagnostic scanner to check for error codes can help pinpoint more complex issues within the vehicle's computer system. By following these steps, you can effectively troubleshoot the starting problem and take the necessary actions to get your S65 AMG back on the road.

What are the common problems that could cause a 2016 Mercedes-Benz S65 AMG to not start?

When troubleshooting starting issues with a 2016 Mercedes-Benz S65 AMG, it's essential to consider several common problems that could be at play. First, the battery is often the primary suspect; a weak or dead battery can easily prevent the vehicle from starting, so checking its condition and ensuring all connections are secure is a crucial first step. If the battery is in good shape, the next component to examine is the starter motor, as a malfunctioning starter can inhibit the engine from cranking. Additionally, the fuel system should not be overlooked; issues such as a clogged fuel filter or a faulty fuel pump can disrupt fuel delivery, leading to starting difficulties. The ignition switch is another critical element; if it is defective, it may fail to send the necessary signals to start the engine. Furthermore, worn or faulty spark plugs can also contribute to starting problems, so inspecting their condition and replacing them if needed is advisable. Lastly, consider the engine control module (ECM), as any issues here can affect various engine functions, including starting. By systematically addressing these potential issues, owners can effectively diagnose and resolve starting problems with their S65 AMG.

What are the potential causes and urgent steps to take when a 2016 Mercedes-Benz S65 AMG won't start?

When your 2016 Mercedes-Benz S65 AMG won't start, it's crucial to act swiftly to prevent potential damage and ensure your safety. A dead battery is often the first suspect, as it can leave you stranded and may indicate underlying electrical issues. If the starter motor is faulty, it can lead to frustrating no-start situations, and ignoring this can result in more extensive repairs. Fuel delivery problems, such as a clogged filter or malfunctioning pump, can also prevent your engine from firing, and delaying action could leave you with a costly repair bill. Additionally, issues within the ignition system, including damaged spark plugs or a faulty ignition switch, can compromise your vehicle's performance and safety. Lastly, if the security system malfunctions, it may lock you out of your own car, necessitating immediate attention. By promptly diagnosing and addressing these issues, you not only enhance your vehicle's reliability but also safeguard against more severe consequences down the line.

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