how to troubleshoot P0700 code in Tesla Model S Plaid/Refresh (2021-present)

Learn how to troubleshoot and fix P0700 transmission fault in Tesla Model S Plaid. Step-by-step guide with diagnostic procedures and repair instructions.

Solution

1. Preparation

• Gather tools and parts needed for the repair.
• Ensure the vehicle is parked on a level surface and the parking brake is engaged.
• Disconnect the negative terminal of the battery to avoid electrical issues.

2. Inspect and Replace Transmission Fluid

• Tools Required: Transmission fluid pump, funnel, torque wrench.
• Remove the transmission fluid drain plug and allow the fluid to drain completely into a suitable container.
• Inspect the old fluid for signs of contamination or burning. If the fluid is discolored or has a burnt smell, it should be replaced.
• Reinstall the drain plug and torque to manufacturer specifications.
• Using a fluid pump, add the recommended transmission fluid through the fill port until the fluid reaches the appropriate level.

3. Check and Repair Wiring/Connectors

• Visually inspect the wiring harness and connectors leading to the TCM.
• Tools Required: Multimeter, wire stripper/crimper.
• Use the multimeter to check for continuity in the wiring. Repair or replace any damaged wires or connectors.
• Reconnect all wiring and ensure they are properly secured.

4. Update Software (if applicable)

• Connect the Tesla to Wi-Fi and check for software updates in the vehicle settings.
• Follow on-screen instructions to download and install any available updates.

5. Reconnect Battery

• Reconnect the negative terminal of the battery and ensure it is secure.
• Start the vehicle and allow it to run for a few minutes to check for any error codes.