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

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

Solution

1. Preparation

• Tools Required: OBD-II scanner, socket set, transmission fluid, funnel, cleaning materials
• Ensure the vehicle is parked on a level surface and the parking brake is engaged. Disconnect the 12V battery to avoid electrical shorts during repairs.

2. Fluid Check and Replacement

• Sub-steps:
  1. Remove the transmission fluid fill plug using the socket set.
  2. Insert the OBD-II scanner to check the transmission fluid temperature (if applicable) and ensure it is at the correct level.
  3. If low, add the appropriate Tesla-approved transmission fluid using a funnel until it reaches the proper level.
  4. If the fluid appears contaminated or burnt, drain the existing fluid from the transmission pan by removing the drain plug, and replace it with new fluid.
  5. Reinstall the drain plug and torque it to the manufacturer's specification.

3. Electrical Inspection and Repairs

• Sub-steps:
  1. Inspect the wiring harness connected to the transmission control module for any signs of wear or damage.
  2. Clean any corroded connectors with electrical contact cleaner and reassemble them securely.
  3. If damaged wiring is found, repair or replace the affected wiring sections.

4. Software Update

• Sub-steps:
  1. Connect the vehicle to a Wi-Fi network and check for available software updates in the Tesla interface.
  2. If an update is available, follow the on-screen prompts to install the latest software version related to the transmission system.

5. Clear Codes and Test Drive

• Sub-steps:
  1. Use the OBD-II scanner to clear the P0700 code and any related codes that were retrieved.
  2. Reconnect the 12V battery and perform a test drive to monitor transmission behavior and ensure the check engine light does not reappear.