my Tesla Model S Original (2012-2020) has a P0700 code, what does it mean?

Learn how to diagnose and fix P0700 transmission control malfunction in Tesla Model S (2012-2020). Step-by-step guide with diagnostic procedures and repair instructions.

Solution

1. Preparation

• Gather tools and parts required for the repair.
• Ensure the vehicle is parked on a level surface and the parking brake is engaged.
• Disconnect the vehicle's battery to prevent any electrical shorts.

2. Inspect and Replace Transmission Fluid

• Sub-steps:
  1. Remove the transmission fluid drain plug using a socket set.
  2. Allow the old fluid to fully drain into a suitable container.
  3. Replace the drain plug with a new gasket and torque to manufacturer specifications (typically around 15-20 Nm).
  4. Refill the transmission with new fluid as specified in the owner's manual (usually Tesla-approved transmission fluid).
  5. Start the vehicle and cycle through the gears while checking for leaks.

3. Inspect Wiring and Connectors

• Sub-steps:
  1. Visually inspect the wiring harness connected to the TCM for fraying or corrosion.
  2. Disconnect and reconnect any loose connectors to ensure a good connection.
  3. Use a multimeter to check for continuity in the wiring; replace any damaged wires as necessary.

4. Test and Reprogram TCM (if required)

• Sub-steps:
  1. Using a compatible diagnostic tool, access the TCM settings.
  2. Check for software updates and perform any necessary updates.
  3. If a TCM replacement is needed, carefully remove the old TCM, install the new one, and reprogram it using the diagnostic tool.