2020 BMW I3s Won't Start

Troubleshooting Common Issues That Prevent Your 2020 BMW i3s 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 2020 BMW i3s 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 for a 2020 BMW i3s that won't start?

When your 2020 BMW i3s refuses to start, the first step is to check the battery, as a weak or dead battery is a common culprit. Ensure the battery is fully charged and in good condition, as this can often resolve the issue. Next, inspect the key fob; a depleted battery in the fob can hinder communication with the vehicle, so testing with a spare fob can help rule this out. Additionally, confirm that the gear is in the correct position—either Park or Neutral—since many vehicles have safety features that prevent starting in other gears. Look for any warning lights or error messages on the dashboard, as these can provide clues about underlying problems. If the car still doesn’t respond, the starter motor may be at fault, so testing it is essential. Don’t forget to check your fuel levels; low fuel can also prevent the engine from starting. Finally, using a diagnostic scanner to check for fault codes can give you deeper insights into the issue. By systematically following these steps, you can effectively diagnose and potentially resolve the starting problem with your BMW i3s.

What are the common problems that could cause a 2020 BMW i3s to not start?

When a 2020 BMW i3s fails to start, several common issues may be at play, and understanding these can empower DIY owners to diagnose and potentially resolve the problem. One of the first areas to check is the battery, as a dead or weak battery is a frequent culprit. Ensure that the battery is fully charged and that the connections are clean and secure. Next, consider the key fob; if the battery in the fob is low or if there is a communication issue, it may prevent the vehicle from recognizing the key, thus inhibiting the start process. Additionally, inspect the fuel system, as a clogged fuel filter or malfunctioning fuel pump can disrupt fuel flow, which is essential for ignition. The ignition system also warrants attention; components like the ignition switch, coil, and spark plugs must be functioning correctly to initiate the starting sequence. Furthermore, a faulty starter motor can hinder the engine from turning over, so checking its operation is crucial. Lastly, don’t overlook the electrical system; issues such as blown fuses or faulty wiring can impede the starting process. By systematically addressing these areas, owners can effectively troubleshoot and resolve starting issues with their BMW i3s.

How urgent is it to diagnose and repair the starting issue in a 2020 BMW i3s that won't start?

When your 2020 BMW i3s refuses to start, the urgency to diagnose and repair the issue cannot be overstated. A non-starting vehicle can create immediate safety concerns, particularly if it occurs in a hazardous location or during adverse weather conditions. Moreover, delaying repairs can exacerbate the problem, leading to more extensive and costly damage to the vehicle's electrical or mechanical systems. This is especially critical for electric vehicles like the i3s, where battery health is paramount; a starting issue may indicate underlying battery problems that, if left unaddressed, could compromise the battery's performance and lifespan. Additionally, the inconvenience of a vehicle that won’t start disrupts daily routines and transportation needs, making it essential to prioritize a swift diagnosis and repair. By acting promptly, you not only ensure your safety but also protect your investment in the vehicle, maintaining its reliability and efficiency for the long term.

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