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

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.