how to fix the CVT slipping problem in my Tesla Model S Plaid/Refresh (2021-present)

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a level surface and the parking brake is applied.

2. Check and Replace Transmission Fluid

• Tools Required: Transmission fluid pump, fluid container, funnel, socket set.
• Sub-steps:
  1. Remove the fill plug from the CVT using the socket set.
  2. Using the transmission fluid pump, extract old fluid from the transmission pan.
  3. Inspect the old fluid for metal shavings or contaminants; if present, further diagnostics may be needed.
  4. Replace with the manufacturer-recommended CVT fluid, filling to the correct level via the fill plug.
  5. Reinstall the fill plug and torque to the specified value in the service manual.

3. Update Software

• Tools Required: Tesla account and internet connection.
• Sub-steps:
  1. Access the software update section through the Tesla touchscreen.
  2. Check for any available updates and follow on-screen instructions to update the vehicle's software.
  3. Restart the vehicle after the update process is completed.

4. Inspect and Repair Electrical Connections

• Tools Required: Multimeter, screwdriver set.
• Sub-steps:
  1. Disconnect the battery to ensure safety while working on electrical components.
  2. Locate the wiring harness connected to the transmission.
  3. Use the multimeter to check for continuity and inspect for damage or corrosion.
  4. Repair or replace any damaged connectors or wiring as necessary.
  5. Reconnect the battery.