FAULTBASE
Error CodesASKCars
© 2026 FAULTBASE
All rights reserved.
v2.0.0 • Production
ContactPrivacyImpressum
why is my Tesla Model S Original (2012-2020) battery losing charge quickly - Tesla Model S
Home/Cars/Tesla/Model S/Plaid/Refresh (2021-present)/why is my Tesla Model S Original (2012-2020) battery losing charge quickly

why is my Tesla Model S Original (2012-2020) battery losing charge quickly

Tesla Model S Plaid/Refresh (2021-present)

Error Codes
1-3 hours
Time
medium
Difficulty
medium
Severity
Navigation
ProblemSymptomsDiagnosisSolution
ProblemSymptomsDiagnosisSolution
3 min read
441 words

Problem Statement

Learn how to diagnose and fix rapid battery charge loss in Tesla Model S (2012-2020). Step-by-step guide with symptoms, diagnostic steps, and solutions.

Affected Component
Electrical
Estimated Time
1-3 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

  • •Disconnect the battery before working on electrical systems.
  • •Allow the vehicle to cool down before inspecting the battery pack.

Symptoms

  • •Significant decrease in range per charge
  • •Frequent need for recharging
  • •Battery percentage dropping quickly during use
  • •Battery warning notifications on the dashboard
  • •Unusual heat generation from the battery pack

Diagnostic Steps

  1. 1
  2. 2
  3. 3
  4. 4
  5. 5
  6. 6

Solution

💡 Expert Tip

For complex repairs like this, consider taking photos at each step. This helps if you need to reverse a step or consult with a mechanic. Also, keep all removed parts organized - you may need to reference them during reassembly.

Verification

After completing the repair, verify that the issue has been resolved:

  • ✓Test the affected component to ensure it functions correctly
  • ✓Check for any error codes or warning lights
  • ✓Monitor the vehicle for a few days to ensure the issue does not recur

Prevention Tips

To prevent this issue from occurring again:

  • •Follow the manufacturer's recommended maintenance schedule
  • •Address warning signs early before they develop into major issues
  • •Use quality parts and fluids recommended for your vehicle
  • •Keep detailed records of all repairs and maintenance

Tools & Equipment Required

  • •OBD-II scanner
  • •Socket set (T30 Torx)
  • •Laptop or mobile device for software updates

Parts Required

  • •Replacement battery (if necessary based on health check)

Additional Information

Affected Component
Electrical
Estimated Time
1-3 hours
Difficulty
medium
Severity
medium
Tools Required
3 items
Parts Required
1 item

Related Faults

Loading...

Share this solution

Comments

Sign in to share your thoughts

Sign In

No comments yet

Be the first to share your thoughts

Back to Generation
Solution
1. Preparation
  • Gather necessary tools and parts.
  • Park the vehicle in a well-ventilated area.
  • Disconnect the vehicle from charging.
2. Check Battery Health
  • Use the Tesla app to access battery health metrics.
  • Note the current state of charge (SoC) and cycle count.
  • If the battery health is significantly diminished (below 70%), consider replacement.
3. Inspect Battery Pack
  • Remove the underbody cover using a socket set (typically T30 Torx).
  • Visually inspect the battery pack for any signs of physical damage or corrosion.
  • Check the connectors and wiring for secure connections.
4. Update Battery Management Software
  • Connect the vehicle to Wi-Fi.
  • Navigate to the software update section in the vehicle’s settings.
  • Follow the prompts to install any available updates to the battery management system.
5. Optimize Charging Settings
  • Access the charging settings in the Tesla app.
  • Set the charging limit to 80-90% for daily use to prolong battery life.
  • Adjust charging times to avoid charging during peak hours, which may cause overheating.