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Home/Cars/Tesla/Model S/Plaid/Refresh (2021-present)/why does my Tesla Model S Plaid/Refresh (2021-present) feel like it’s losing power while driving?

why does my Tesla Model S Plaid/Refresh (2021-present) feel like it’s losing power while driving?

Tesla Model S Plaid/Refresh (2021-present)

Severity: highDifficulty: medium2-4 hours
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 diagnose and fix power loss issues in Tesla Model S Plaid (2021-present). Step-by-step guide with symptoms, diagnostics, and repair instructions.

Component
Electrical
Repair Time
2-4 hours

Safety Warnings

  • ⚠Always disconnect the battery before working on high-voltage systems.
  • ⚠Allow the vehicle to cool down before inspecting the battery or cooling system.

Symptoms

  • •Power delivery feels inconsistent or reduced during acceleration
  • •Sudden loss of power at higher speeds
  • •Increased battery drain or reduced range
  • •Unusual noises during acceleration (e.g., whining or grinding)
  • •Dashboard warning lights illuminated (e.g., battery, powertrain)

Diagnostic Steps

  1. 1Check for any error messages or alerts on the vehicle's touchscreen.
  2. 2Inspect battery state of charge and health using the Tesla app or vehicle interface.
  3. 3Run a diagnostic scan using Tesla's built-in diagnostic tools for any logged faults or issues.
  4. 4Inspect the battery cooling system for blockages or leaks that might cause overheating.
  5. 5Test the performance of the electric motors using the vehicle's performance diagnostics.
  6. 6Review software version and update if necessary to ensure optimal performance.

Solution

Solution

1. Preparation

  • Ensure vehicle is parked on a flat surface and is in "Park" mode.
  • Disconnect the high-voltage battery system if necessary (consult Tesla service manual).

2. Battery Inspection

  • Check Battery Connections:

    • Inspect and tighten the battery connections and terminals.
    • Ensure there is no corrosion on the battery terminals.

  • Inspect Battery Cooling:

    • Remove the undercarriage shield using a socket set.
    • Visually inspect the battery cooling system for any obstructions or leaks.
    • Clear any debris from cooling vents.

3. Software Update

  • Connect the vehicle to a Wi-Fi network.
  • Navigate to the software update section in the touchscreen interface.
  • Download and install the latest software version available.

4. Motor Performance Test

  • Using Tesla’s diagnostic tools, run a test on the electric motors.
  • Ensure that both motors are performing within factory specifications.
  • If a motor is underperforming, consult with Tesla service for potential replacement.

5. Reassemble and Test

  • Reattach any components removed during inspection and ensure all fasteners are tightened to specifications.
  • Reconnect the battery system if previously disconnected.
  • Conduct a test drive to assess power delivery.

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
  • Torque wrench

Parts Required

  • Battery terminal cleaner (if corrosion is present)
  • Replacement cooling system components (if damage is found)

Additional Information

Component

Electrical

Repair Time

2-4 hours

Difficulty

medium

Severity

high

Tools

3 items

Parts

2 items

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