2016 Mercedes-Benz E350 Won't Start

Resolve Starting Issues for Your 2016 Mercedes-Benz E350

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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 2016 Mercedes-Benz E350 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 E350 won't start?

When faced with a 2016 Mercedes-Benz E350 that won't start, it's essential to adopt a systematic diagnostic approach to identify the underlying issue. Begin by checking the battery, as a weak or dead battery is a common culprit; ensure that the terminals are clean and securely connected. Next, verify the fuel level in the tank, as running low on fuel can lead to starting problems. It's also crucial to confirm that the vehicle is in Park or Neutral, especially for automatic transmissions, since safety features may prevent the engine from cranking in other gear positions. Pay attention to any warning lights on the dashboard, as these can provide valuable insights into potential system malfunctions. If the battery checks out but the engine remains unresponsive, testing the starter motor is the next logical step, as a faulty starter could be the issue. Lastly, inspect the fuses for any that may have blown, as this can disrupt the electrical system and hinder the starting process. By following this structured diagnostic approach, you can effectively narrow down the causes of the starting issue and take the necessary steps to resolve it.

What are the common problems that could cause a 2016 Mercedes-Benz E350 to not start?

When your 2016 Mercedes-Benz E350 refuses to start, several common issues may be at play. First, consider the battery; a weak or dead battery is often the culprit, so check for corrosion on terminals and ensure the battery is charged. If the battery is functioning, the next step is to inspect the starter motor, as a malfunction here can prevent the engine from turning over. Additionally, examine the fuel system, including the fuel pump and filter, as blockages or failures can hinder fuel delivery to the engine. The ignition switch is another critical component; if it’s faulty, turning the key may yield no response. Don’t overlook the spark plugs, as worn or damaged plugs can disrupt ignition. Lastly, issues with the vehicle's security system, such as a malfunctioning key fob or immobilizer, can also prevent starting. By systematically checking these areas, you can identify and potentially resolve the starting issues with your E350.

How urgent is it to address the starting issue in a 2016 Mercedes-Benz E350?

When dealing with starting issues in a 2016 Mercedes-Benz E350, the urgency of the situation cannot be overstated. If the vehicle fails to start, it is essential to act quickly to prevent being stranded or incurring further damage. Symptoms such as slow cranking, unusual clicking sounds, or warning lights on the dashboard should not be ignored, as they often signal underlying problems that require immediate attention. Diagnostic testing is a prudent step if the cause of the issue is unclear, as neglecting these symptoms can lead to more extensive and costly repairs. Additionally, starting issues can pose significant safety risks, particularly if they arise while driving, making prompt resolution critical for the safety of all passengers. It is also advisable to consult the owner's manual or a Mercedes-Benz dealership for specific guidance, as adhering to manufacturer recommendations can enhance the vehicle's performance and longevity. In summary, addressing starting issues without delay is vital to ensure the reliability and safety of your E350.

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