2017 BMW 320i Won't Start

Troubleshooting Common Issues That Prevent Your 2017 BMW 320i from Starting and How to Resolve Them

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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 2017 BMW 320i 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 320i won't start?

When your 2017 BMW 320i refuses to start, the first step is to check the battery, as a dead or weak battery is a common culprit. If the battery appears low, consider jump-starting the vehicle or using a multimeter to measure its voltage. Next, ensure that there is sufficient fuel in the tank, as running out of gas can easily lead to starting problems. Following this, inspect the ignition system, which includes checking the spark plugs and ignition coils for any signs of wear or malfunction. If these components are functioning correctly, turn your attention to the starter motor; listen for any clicking sounds when attempting to start the car, which may indicate a faulty starter. Additionally, using a diagnostic scanner can help identify any error codes that may point to specific issues within the vehicle's systems. Lastly, verify that the fuel system is operational, ensuring the fuel pump is delivering fuel to the engine. By systematically addressing these areas, you can effectively diagnose and potentially resolve the starting issue with your BMW.

What are the common problems that could cause a 2017 BMW 320i to not start?

When troubleshooting a 2017 BMW 320i that won't start, it's essential to consider several common problems that could be at play. A weak or dead battery is often the first suspect, as it can stem from either the battery itself or issues within the charging system. If the battery checks out, the next area to investigate is the fuel system; a clogged fuel filter or a malfunctioning fuel pump can prevent the engine from receiving the necessary fuel. Additionally, the ignition system plays a crucial role in starting the vehicle, so be sure to examine components like the ignition switch and spark plugs for faults. If these systems are functioning correctly, the starter motor may be the culprit, as a failure here can stop the engine from cranking altogether. Furthermore, the Engine Control Unit (ECU) is vital for managing various vehicle functions, and any issues with it can lead to starting difficulties. Lastly, don't overlook the sensors, particularly the crankshaft and camshaft position sensors, as their failure can also hinder the engine's ability to start. While DIY troubleshooting can help identify these issues, consulting a professional mechanic is advisable for an accurate diagnosis and effective repairs.

How urgent is it to diagnose and fix the starting issue in a 2017 BMW 320i that won't start?

When faced with a starting issue in a 2017 BMW 320i, the urgency to diagnose and resolve the problem cannot be overstated. A vehicle that fails to start not only poses immediate safety risks, particularly if it occurs in a precarious situation, but it can also lead to more severe complications if left unaddressed. Ignoring the symptoms may result in further damage to critical components, which could escalate repair costs significantly. Additionally, the inconvenience of being unable to rely on your vehicle can disrupt daily life, making it essential to restore functionality as soon as possible. Engaging a qualified mechanic for a thorough inspection is advisable, as they can quickly identify the underlying issues and facilitate a prompt repair. Ultimately, prioritizing the diagnosis and repair of a starting issue is vital for ensuring safety, preventing additional damage, and maintaining the convenience of your vehicle.

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2017 BMW 320i Won't Start: Causes & Repairs | RepairPal