2019 Tesla S Won't Start

Troubleshooting Common Issues That Prevent Your 2019 Tesla S 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 2019 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 when a 2019 Tesla S won't start?

When faced with a 2019 Tesla Model S that won't start, it's essential to approach the situation methodically to identify the root cause. Begin by checking the battery charge, as a low battery can often be the culprit; you can easily monitor this through the dashboard or the Tesla mobile app. Next, inspect the key fob to ensure it has sufficient battery power and is functioning correctly; if you have a spare, try using it to rule out any issues with the primary fob. If these initial checks do not resolve the problem, attempt a hard reset by pressing the brake pedal and holding the power button for about 10 seconds. This can sometimes clear minor glitches. Pay attention to any error messages displayed on the dashboard, as they can provide valuable clues about the issue at hand. Additionally, confirm that the vehicle is in Park or Neutral and that the parking brake is disengaged, as these factors can prevent the car from starting. If the problem persists after these steps, it may be time to reach out to Tesla support for further assistance and potential remote diagnostics. By following this structured approach, you can efficiently troubleshoot the starting issue and determine the next steps needed to get your Tesla back on the road.

What are the common problems that could cause a 2019 Tesla S to not start?

When troubleshooting a 2019 Tesla Model S that won't start, it's essential to consider several common problems that could be at play. First, battery issues are often the primary culprit; a dead or low battery can prevent the vehicle from starting, which may stem from a faulty battery or complications within the battery management system. Additionally, charging problems can arise if the vehicle hasn't been charged adequately or if there are malfunctions in the charging system, leaving the battery without sufficient power. Another factor to investigate is the key fob; a dead battery or malfunctioning key fob can hinder the starting process. Software glitches are also a possibility, as the car's system may require a software update or reset to function correctly. Furthermore, faulty components such as the starter motor or ignition switch can lead to starting issues, as can safety features like the immobilizer system, which may prevent the car from starting if it detects an anomaly. By systematically addressing these potential issues, you can effectively diagnose and resolve the starting problem, ensuring your Tesla Model S is back on the road in no time.

How urgent is it to address the starting issue in a 2019 Tesla S that won't start?

Addressing a starting issue in a 2019 Tesla Model S that won't start is of utmost importance due to several critical factors. First and foremost, battery concerns are often at the forefront of such problems; if the battery is indeed the culprit, delaying action can lead to a complete drain, complicating any attempts to jump-start the vehicle or necessitating a costly battery replacement. Additionally, software or firmware glitches can also contribute to starting issues, and prompt attention can prevent these minor problems from escalating into more significant software failures that could affect the vehicle's overall performance. Furthermore, neglecting a starting issue may result in further component failures within the electrical system, leading to additional damage and expensive repairs. Lastly, some starting issues may indicate underlying safety concerns, particularly if they involve critical vehicle systems. By addressing these problems quickly, you not only safeguard the vehicle's functionality but also ensure the safety of all passengers. Therefore, it is crucial for DIY enthusiasts to act swiftly when faced with a starting issue in their Tesla Model S to mitigate risks and avoid unnecessary complications.

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