how to fix P0700 code in Tesla Model S Original (2012-2020)

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 necessary tools and parts.
• Park the vehicle on a level surface and engage the parking brake.
• Disconnect the negative terminal of the 12V battery to ensure safety.

2. Inspect and Replace Transmission Fluid

• Sub-steps:
  1. Locate the transmission fluid fill and drain plugs.
  2. Place a drain pan underneath the transmission.
  3. Remove the drain plug and allow the old fluid to fully drain out.
  4. Inspect the old fluid for metal shavings or burning smell, indicating potential internal issues.
  5. Replace the drain plug with a new gasket if necessary.
  6. Refill the transmission with the recommended fluid type (check Tesla specs).
• Tools Required: Socket set, drain pan, funnel.

3. Check and Repair Wiring/Connectors

• Sub-steps:
  1. Visually inspect the wiring harness and connectors for signs of wear or damage.
  2. Use a multimeter to check for continuity and proper voltage at the transmission control module connector.
  3. Repair or replace any damaged wiring or connectors as needed.
• Tools Required: Multimeter, wire strippers/crimpers.

4. Reprogram or Replace Transmission Control Module

• Sub-steps:
  1. If diagnostics indicate a faulty transmission control module, remove it according to manufacturer guidelines.
  2. Install the new or refurbished module.
  3. Use a diagnostic tool to reprogram the new module to the vehicle.
• Tools Required: OBD-II scanner, socket set.

5. Reconnect Battery and Test

• Sub-steps:
  1. Reconnect the negative terminal of the battery.
  2. Start the vehicle and check for any remaining error codes.
  3. Conduct a test drive to assess the transmission's performance.
• Safety Warnings: Ensure all tools are removed from the engine bay before reconnecting the battery.