2017 BMW I8 Won't Start

Troubleshooting Common Issues That Prevent Your 2017 BMW i8 from Starting and How to Resolve Them

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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 2017 BMW i8 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 2017 BMW i8 won't start?

When faced with a situation where your 2017 BMW i8 won't start, it's essential to adopt a systematic diagnostic approach to identify the root cause effectively. Begin by checking the battery, as a weak or dead battery is often the most common culprit behind starting issues. Ensure that the battery terminals are clean and securely connected. Next, inspect the key fob; if the battery in the fob is low or the fob itself is malfunctioning, it may not communicate properly with the vehicle, preventing it from starting. Additionally, verify that the gear selector is in the correct position, typically Park or Neutral, as many vehicles are designed with safety features that inhibit starting in other gears. It's also wise to check the fuel level; running out of gas can be an easily overlooked reason for a no-start condition. If these initial checks do not resolve the issue, consider using a diagnostic tool to scan for error codes, which can provide insights into any underlying problems. Lastly, inspect the vehicle's fuses, as a blown fuse can disrupt the electrical system and lead to starting failures. By following this structured approach, you can efficiently troubleshoot and potentially resolve the starting issue with your BMW i8.

What are the common problems that could cause a 2017 BMW i8 to not start?

When a 2017 BMW i8 fails to start, several common problems may be at play, and understanding these can help you diagnose the issue. Start by checking the battery, as a dead or weak battery is often the primary culprit. Ensure that the battery connections are clean and secure, and consider testing the alternator to confirm it is charging the battery properly. Next, inspect the fuel system; a clogged fuel filter or a malfunctioning fuel pump can prevent fuel from reaching the engine, leading to starting difficulties. Additionally, examine the ignition system components, including spark plugs and ignition coils, as these can also hinder the starting process if they are faulty. The starter motor is another critical component; if it is not functioning correctly, the engine will not crank. Furthermore, issues with the Engine Control Unit (ECU) can disrupt the starting sequence, so it may be worth checking for any error codes. Lastly, don’t overlook the vehicle's security system, as a malfunctioning immobilizer or key fob can prevent the car from starting altogether. By systematically checking these areas, you can identify the root cause of the starting issue and take the necessary steps to resolve it.

What are the potential risks and necessary steps to take if my 2017 BMW i8 won't start?

When your 2017 BMW i8 won't start, it's essential to act swiftly to mitigate potential risks and avoid further complications. Neglecting issues such as a dead battery, faulty starter, or fuel system malfunctions can lead to significant damage and safety hazards. Start by checking the battery; ensure it is charged and properly connected, as a dead battery is a common culprit. If you hear a clicking sound when turning the key, this may indicate a problem with the starter, which should be addressed immediately. Additionally, verify that your fuel levels are sufficient, as a malfunctioning fuel gauge can mislead you into thinking you have enough fuel. Don't forget to inspect the ignition system; worn spark plugs or a faulty ignition switch can prevent your vehicle from starting and should be examined closely. By addressing these issues promptly, you not only enhance your vehicle's reliability but also ensure your safety on the road. If you're unable to diagnose or fix the problem yourself, consulting a certified mechanic is highly recommended to prevent any potential risks associated with ignoring these symptoms.

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2017 BMW i8 Won't Start? Common Causes & Solutions