2020 Tesla S Won't Start

Troubleshooting Common Issues That Prevent Your 2020 Tesla S from Starting and How to Resolve Them

Find Repair Location
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 Tesla S 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 Tesla S that won't start?

When your 2020 Tesla Model S won't start, the first step is to check the battery, as a low or dead battery is a common culprit. Ensure that the battery is fully charged and that all connections are secure. Next, inspect the key fob; a weak battery in the fob can prevent the vehicle from recognizing it, so replace it if necessary. It's also important to verify that the car is in the correct gear, either "Park" or "Neutral," as this is a requirement for starting. If these initial checks do not resolve the issue, consider performing a hard reset of the vehicle's computer system, which can clear minor software glitches. Pay attention to any error messages displayed on the dashboard, as they can provide insights into the problem. If all else fails, reaching out to Tesla support can be beneficial, as they offer remote diagnostics that may help pinpoint the issue. By following these steps, you can systematically troubleshoot the starting problem with your Tesla Model S.

What are the common problems that could cause a 2020 Tesla S to not start?

When troubleshooting a 2020 Tesla Model S that won't start, it's essential to consider several common problems that could be at play. One of the primary culprits is battery-related issues, which may involve a drained battery, poor connections, or complications with the battery management system. Additionally, the key fob can be a source of trouble; a dead battery or malfunctioning key fob can prevent the vehicle from recognizing the key and starting. Software glitches are another potential issue, as the vehicle's operating systems may experience bugs that interfere with starting. Furthermore, inadequate charging or problems within the charging system can lead to insufficient power for ignition. Lastly, faulty components such as the motor or powertrain can also contribute to starting difficulties. By systematically diagnosing these areas, you can identify the root cause and take the necessary steps to resolve the issue, ensuring your Tesla Model S is back on the road in no time.

How urgent is it to address the starting issue in a 2020 Tesla S that won't start?

Addressing a starting issue in a 2020 Tesla Model S that won't start is of utmost urgency due to several critical factors. First and foremost, safety is paramount; a vehicle that fails to start unexpectedly can create hazardous situations, particularly if it occurs while driving or in a vulnerable location. Additionally, the inconvenience of a non-starting car can disrupt daily life, leaving you stranded and unable to fulfill essential commitments. Beyond immediate concerns, neglecting the issue can lead to further damage to the vehicle's components, resulting in more extensive and costly repairs down the line. Timely intervention not only helps in diagnosing the problem more efficiently but also ensures that your Tesla remains reliable and safe for use. Therefore, it is crucial to act swiftly when faced with starting issues to mitigate risks and restore your vehicle's functionality.

You’ve got options with RepairPal

Whether you need a more accurate auto repair estimate or help finding a reputable shop in your area, we’ve got you covered.