FAULTBASE
Error CodesASKCars
© 2026 FAULTBASE
All rights reserved.
v2.0.0 • Production
ContactPrivacyImpressum
why does my Tesla Model S Plaid/Refresh (2021-present) battery overcharge in hot weather - Tesla Model S
Home/Cars/Tesla/Model S/Plaid/Refresh (2021-present)/why does my Tesla Model S Plaid/Refresh (2021-present) battery overcharge in hot weather

why does my Tesla Model S Plaid/Refresh (2021-present) battery overcharge in hot weather

Tesla Model S Plaid/Refresh (2021-present)

Error Codes
1-2 hours
Time
medium
Difficulty
high
Severity
Navigation
ProblemSymptomsDiagnosisSolution
ProblemSymptomsDiagnosisSolution
3 min read
511 words

⚠️ Safety Warning

This issue requires immediate attention. If you are not experienced with automotive repairs, consult a professional mechanic. Working on critical systems can be dangerous.

Problem Statement

Learn how to diagnose and fix battery overcharging issues in Tesla Model S Plaid during hot weather. Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component
Electrical
Estimated Time
1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

  • •Always allow the vehicle to cool down before inspecting the battery or cooling system.

Symptoms

  • •Battery charge exceeds recommended limits
  • •Battery temperature warning alerts on the dashboard
  • •Decreased driving range
  • •Reduced charging efficiency
  • •Check battery health notifications in the vehicle's interface

Diagnostic Steps

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

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
  • •Diagnostic laptop
  • •Coolant
  • •Funnel
  • •Flashlight
  • •Safety gloves

Parts Required

  • •Manufacturer-recommended coolant

Additional Information

Affected Component
Electrical
Estimated Time
1-2 hours
Difficulty
medium
Severity
high
Tools Required
6 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
  • Ensure the vehicle is parked in a shaded area or garage to minimize external temperature effects.
  • Disconnect any charging cables before beginning repairs.
  • Tools required: Diagnostic laptop (if necessary), safety gloves.
2. Software Update
  • Connect the vehicle to Wi-Fi to check for updates.
  • Navigate to the software update section on the touchscreen.
  • Follow prompts to install any available updates to the BMS.
  • Tools required: None specific for this step.
3. Battery Cooling System Inspection
  • 1.1 Open the hood and locate the battery cooling system components.
  • 1.2 Inspect the coolant reservoir for proper fluid levels; refill with the manufacturer-recommended coolant if low.
  • 1.3 Check the cooling fans for proper operation by starting the vehicle and observing fan behavior.
  • 1.4 Look for any visible leaks in the coolant lines or connections.
  • Tools required: Coolant, funnel, flashlight.
4. Charge Settings Adjustment
  • 4.1 Access charging settings on the vehicle's touchscreen.
  • 4.2 Set the maximum charge limit to 80% to prevent overcharging.
  • 4.3 Enable scheduled charging during cooler times of the day to mitigate heat effects.
  • Tools required: None specific for this step.
5. Battery Health Monitoring
  • 5.1 Use the vehicle's diagnostics screen to monitor battery health and performance metrics.
  • 5.2 If any anomalies are detected, consider contacting Tesla service for a deeper analysis.
  • Tools required: Diagnostic laptop (if necessary).