2017 BMW 550i GT XDrive Won't Start

Resolve Starting Issues for 2017 BMW 550i GT xDrive

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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 2017 BMW 550i GT xDrive 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 550i GT xDrive won't start?

When your 2017 BMW 550i GT xDrive 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 often the most common culprit behind starting issues. Ensure that the battery is fully charged and in good condition. Next, verify that there is sufficient fuel in the tank; sometimes, a low fuel level can lead to starting problems. If the battery and fuel levels are adequate, inspect the key fob to ensure it is functioning correctly, as a malfunctioning key fob can prevent the vehicle from starting. Listen for any unusual sounds, such as clicking or grinding, when attempting to start the car, as these noises may indicate a problem with the starter motor. Additionally, using a diagnostic scanner to check for error codes can provide insights into any underlying issues within the vehicle's computer system. Finally, examine the ignition system components, including spark plugs and ignition coils, for any signs of damage or malfunction. By following these steps, you can effectively narrow down the potential causes of the starting issue and take the necessary actions to resolve it.

What are the common problems that could cause a 2017 BMW 550i GT xDrive to not start?

When your 2017 BMW 550i GT xDrive refuses to start, it can be frustrating, but understanding the common problems can help you diagnose the issue effectively. One of the first areas to check is the battery; a weak or dead battery is often the culprit, so ensure it is fully charged and in good condition. Next, consider the fuel system, as a clogged fuel filter or a malfunctioning fuel pump can hinder fuel delivery to the engine. The ignition system is another critical component; inspect the spark plugs and ignition coils for wear or damage, as these can prevent the engine from firing. Additionally, the starter motor should be examined, as a failure here will stop the engine from cranking altogether. Don't overlook the Engine Control Module (ECM), which manages various engine functions and can cause starting issues if it malfunctions. Faulty sensors, particularly the crankshaft and camshaft position sensors, can also disrupt the starting process. Lastly, ensure that the vehicle's security system is functioning correctly, as issues with the immobilizer or key fob can prevent the car from starting. By systematically checking these areas, you can identify and resolve the starting issues with your BMW, making it a manageable DIY project.

How urgent is it to address the starting issue in a 2017 BMW 550i GT xDrive?

Addressing starting issues in a 2017 BMW 550i GT xDrive is crucial, as neglecting these problems can lead to significant safety risks and costly repairs. If the vehicle fails to start completely or experiences intermittent issues, it may indicate underlying problems that require immediate attention. Diagnostic trouble codes (DTCs) can provide valuable insights into the specific issues affecting the starting system, and certain codes may signal critical failures that should not be ignored. Additionally, the health of the battery plays a vital role; an aging or weak battery can exacerbate starting difficulties, making prompt replacement essential to avoid further complications. Furthermore, components of the ignition and fuel systems, such as spark plugs, ignition coils, fuel filters, and fuel pumps, must be inspected regularly, as their malfunction can prevent the engine from starting altogether. Lastly, electrical issues, including faulty wiring or relays, can disrupt the starting process and lead to more extensive damage if left unaddressed. Therefore, recognizing and acting on these symptoms swiftly is key to maintaining the vehicle's reliability and safety on the road.

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