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

Learn how to diagnose and fix P0700 transmission 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 on a flat surface and turn off the ignition.
• Disconnect the negative terminal of the battery to prevent electrical shorts.

2. Transmission Fluid Inspection and Replacement

• Tools Required: Fluid pump, torque wrench, transmission fluid (specific to Tesla specifications).
• Remove the transmission fluid drain plug and allow the old fluid to drain completely.
• Inspect the drain plug for metal shavings or debris; this may indicate internal transmission wear.
• Replace the drain plug and torque to manufacturer specifications.
• Use the fluid pump to refill the transmission with new fluid until it reaches the proper level.

3. Electrical Connection Inspection

• Reconnect the battery terminal and power on the vehicle.
• Use the OBD-II scanner to check for any active codes.
• Inspect the transmission control module wiring harness. Disconnect and reconnect the connectors to ensure a proper fit.
• If damage is found, replace the wiring harness or repair as necessary.

4. TCM Software Update or Replacement

• If the diagnostic steps indicate a software issue, connect the vehicle to the Tesla service computer.
• Check for any available software updates for the TCM and install them.
• If the TCM is faulty, remove it according to manufacturer specifications and replace it with a new unit, ensuring proper connections are restored.