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how to troubleshoot the loss of power in Tesla Model S Original (2012-2020) - Tesla Model S
Home/Cars/Tesla/Model S/Plaid/Refresh (2021-present)/how to troubleshoot the loss of power in Tesla Model S Original (2012-2020)

how to troubleshoot the loss of power in Tesla Model S Original (2012-2020)

Tesla Model S Plaid/Refresh (2021-present)

Error Codes
4-8 hours
Time
hard
Difficulty
high
Severity
Navigation
ProblemSymptomsDiagnosisSolution
ProblemSymptomsDiagnosisSolution
3 min read
484 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 troubleshoot loss of power in Tesla Model S (2012-2020). Step-by-step guide with diagnostic steps, tools required, and repair instructions.

Affected Component
Electrical
Estimated Time
4-8 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

  • •Disconnect the high-voltage battery before working on the vehicle.
  • •Always allow the vehicle to cool down before inspecting electrical components.

Symptoms

  • •Reduced acceleration responsiveness
  • •Warning messages on the dashboard (e.g., 'Performance Restricted')
  • •Unusual noises from the electric motor
  • •Decreased range on a full charge
  • •Sudden power loss while driving

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
  • •Multimeter
  • •Socket set
  • •Torque wrench

Parts Required

  • •Battery modules (if defective)
  • •Electric motor or inverter (if needed)

Additional Information

Affected Component
Electrical
Estimated Time
4-8 hours
Difficulty
hard
Severity
high
Tools Required
4 items
Parts Required
2 items

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Solution
1. Preparation
  • Tools Required: OBD-II scanner, multimeter, socket set, torque wrench.
  • Ensure the vehicle is parked on a flat surface and the parking brake is engaged.
  • Disconnect the high-voltage battery (follow Tesla's safety procedures).
2. Battery Inspection

  • Check Voltage Levels:

    • Use a multimeter to measure the voltage at the battery terminals.
    • Ensure the voltage is within specifications (typically around 350-400 volts).

  • Inspect Connections:

    • Remove the battery cover (if applicable).
    • Check all connections for tightness and corrosion; clean as necessary.
3. Repair or Replace Battery Components
  • Battery Module Replacement:
    • If any battery modules are found to be defective (based on diagnostics), proceed to remove and replace them.
    • Disconnect the battery module connectors, unbolt them, and replace with new modules.
4. Electric Motor and Inverter Check

  • Inspect Motor and Inverter:

    • Use a socket set to remove any covers or shields protecting the electric motor.
    • Check for signs of physical damage, wear, or overheating.

  • Connect Diagnostic Tools:

    • Use Tesla's proprietary diagnostic software to check motor and inverter performance.

  • Replace Faulty Components:

    • If any issues are found, replace the electric motor or inverter as needed.