2014 Mercedes-Benz SLS AMG Won't Start

Resolve Starting Issues for 2014 Mercedes-Benz SLS AMG

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Reviewed by
Andrew Hajjar
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 2014 Mercedes-Benz SLS 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 steps should I take to diagnose why my 2014 Mercedes-Benz SLS AMG won't start?

When faced with a non-starting 2014 Mercedes-Benz SLS AMG, it's essential to adopt a systematic diagnostic approach that prioritizes simpler solutions before delving into more complex issues. Begin by checking the battery, as a weak or dead battery is a common culprit; ensure it is fully charged and that the terminals are clean and securely connected. Next, inspect the fuel system to confirm there is adequate fuel in the tank and that the fuel pump and filter are functioning properly. Following this, examine the ignition system, focusing on components like spark plugs and ignition coils, which can often fail and prevent the engine from starting. Utilizing a diagnostic scanner can provide valuable insights by revealing any error codes that may indicate specific problems. If these initial checks do not resolve the issue, test the starter motor and solenoid to ensure they are operational. Additionally, inspect the engine compartment for any visible damage or leaks that could hinder the starting process. If all else fails and the problem persists, consulting a qualified mechanic with expertise in Mercedes-Benz vehicles is advisable to ensure a thorough diagnosis and repair. By following this structured approach, you can effectively identify and address the reasons behind your vehicle's starting issues.

What are the common problems that could cause a 2014 Mercedes-Benz SLS AMG to not start?

When troubleshooting a 2014 Mercedes-Benz SLS AMG that won't start, it's essential to consider several common problems that could be at play. One of the primary culprits is battery troubles; a weak or dead battery can prevent the vehicle from starting altogether. Regularly checking the battery's charge and connections can help maintain its health and ensure reliable performance. Additionally, engine vibration can indicate underlying issues that may disrupt the starting process. If the engine is not running smoothly, it could be a sign of mechanical problems that need addressing. Lastly, an unusual exhaust smell can provide critical clues about the vehicle's condition; it may suggest fuel system issues or other malfunctions that could hinder the starting mechanism. By systematically examining these factors, DIYers can effectively diagnose and potentially resolve the starting issues with their SLS AMG.

What immediate steps should be taken to diagnose and resolve the starting issue of a 2014 Mercedes-Benz SLS AMG?

When dealing with starting issues in your 2014 Mercedes-Benz SLS AMG, it is crucial to act promptly to avoid potential safety risks and costly repairs. Ignoring symptoms such as a weak battery or a malfunctioning starter motor can lead to more severe problems down the line, including complete engine failure or electrical system damage. Begin by checking the battery, as a simple jump-start may resolve the issue. If the battery is fine, inspect the starter motor and ignition switch, as these components are vital for initiating engine operation. Additionally, ensure that your fuel levels are adequate and that the fuel system is functioning correctly, as these factors are essential for a successful start. Utilizing a diagnostic tool to scan for error codes can provide insights into underlying issues, while checking for spark in the ignition system is equally important. By addressing these concerns swiftly, you not only enhance your vehicle's performance but also safeguard against more significant repairs, ensuring a smoother and safer driving experience.

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2014 Mercedes-Benz SLS AMG Won't Start: Causes & Repairs