my Tesla Model S Plaid/Refresh (2021-present) has a code P0700, what does it mean?

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

Solution

1. Preparation

• Gather tools and parts required for the repair.
• Disconnect the negative terminal of the battery to ensure safety.

2. Inspect and Replace Transmission Fluid

• Sub-steps:
  1. Locate the transmission fluid fill plug and drain plug.
  2. Using a socket set, remove the drain plug and allow the fluid to completely drain into a container.
  3. Inspect the old fluid for contaminants or burnt smell.
  4. Replace the drain plug and tighten to the manufacturer's torque specification.
  5. Refill the transmission with new fluid as per Tesla specifications using a funnel.

3. Check and Repair Wiring/Connectors

• Sub-steps:
  1. Visually inspect the wiring harness connected to the transmission control module for any signs of wear, fraying, or disconnection.
  2. Use a multimeter to check for continuity in the wiring.
  3. Repair or replace any damaged wiring or connectors.

4. Replace Transmission Control Module (if necessary)

• Sub-steps:
  1. Remove any covers or panels obstructing access to the transmission control module.
  2. Disconnect electrical connectors from the module.
  3. Unbolt the module from its mounting location using a socket set.
  4. Install the new transmission control module by reversing the removal steps, ensuring all connections are secure.

5. Reconnect Battery and Clear Codes

• Sub-steps:
  1. Reconnect the negative battery terminal securely.
  2. Use an OBD-II scanner to clear any stored fault codes from the system.
  3. Perform a test drive to confirm that the issue is resolved.