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Home/Cars/Tesla/Model S/Plaid/Refresh (2021-present)/why does my Tesla Model S Plaid/Refresh (2021-present) have a rough idle

why does my Tesla Model S Plaid/Refresh (2021-present) have a rough idle

Tesla Model S Plaid/Refresh (2021-present)

Severity: mediumDifficulty: medium1-3 hours
3 min read
528 words

Problem Statement

Learn to diagnose and fix rough idle issues in Tesla Model S Plaid (2021-present). Step-by-step guide with symptoms, diagnostics, and solutions.

Component
Electrical
Repair Time
1-3 hours

Safety Warnings

  • ⚠Disconnect the 12V battery before working on electrical systems.
  • ⚠Ensure the vehicle is properly secured on jack stands before inspecting underneath.

Symptoms

  • •Noticeable vibrations while stationary
  • •Unusual noises from the electric motors
  • •Inconsistent power delivery during acceleration
  • •Reduced efficiency or increased energy consumption
  • •Occasional error messages on the display

Diagnostic Steps

  1. 1Check for any error codes using Tesla's diagnostic tools or mobile app.
  2. 2Inspect the battery management system (BMS) for any abnormalities or alerts.
  3. 3Verify firmware is up to date using the vehicle's software settings.
  4. 4Examine the vehicle's suspension and mounts for wear or damage that could contribute to vibrations.
  5. 5Perform a visual inspection of the electric motor mounts and connections.
  6. 6Assess the state of the battery pack for cell balancing issues or damage.

Solution

Solution

1. Preparation

  • Ensure the vehicle is parked on a flat surface and in Park mode.
  • Disconnect the 12V battery for safety if necessary.
  • Gather tools: socket set, torque wrench, multimeter, and diagnostic tools.

2. Update Firmware

  • Connect the vehicle to Wi-Fi.
  • Navigate to the software section in the settings menu.
  • Check for updates and install the latest firmware to address potential software issues.

3. Inspect and Secure Connections

  • Open the front trunk and locate the electric motor connections.
  • Visually inspect all connectors for any signs of corrosion or loose fittings.
  • Use a multimeter to check for continuity in the connections.
  • If any connections are loose, secure them according to the manufacturer’s specifications.

4. Examine Motor Mounts

  • Lift the vehicle using a jack and secure it with jack stands.
  • Inspect the electric motor mounts for wear or damage.
  • If the mounts are compromised, replace them with OEM parts using the torque specifications provided in the service manual.

5. Battery Pack Inspection

  • Check the Battery Management System (BMS) readings via diagnostic tools.
  • If any cells are found to be out of balance, consider having the battery serviced or balanced by a professional technician.
  • Ensure the battery cooling system is functioning properly and not obstructed.

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

  • Diagnostic tools (Tesla software or app)
  • Socket set
  • Multimeter
  • Torque wrench

Parts Required

  • Electric motor mounts (if damaged)
  • Electrical connectors (if corroded or worn)

Additional Information

Component

Electrical

Repair Time

1-3 hours

Difficulty

medium

Severity

medium

Tools

4 items

Parts

2 items

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