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

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

Solution

1. Preparation

• Gather tools and parts.
• Ensure the vehicle is parked on a level surface and the parking brake is engaged.
• Disconnect the negative battery terminal to prevent electrical shorts.

2. Check Transmission Fluid

• Tools Required: Transmission fluid dipstick or funnel (if applicable).
• Inspect the transmission fluid level through the dipstick or fill port.
• If fluid is low, add the recommended transmission fluid type as per Tesla specifications.
• Check the fluid condition—if it is dark or smells burnt, consider changing the fluid.

3. Inspect Wiring and Connectors

• Tools Required: Multimeter and basic hand tools.
• Visually inspect the wiring harness and connectors leading to the TCM for any signs of damage or corrosion.
• Use a multimeter to check for continuity in the wiring and ensure proper voltage is reaching the TCM.
• Repair or replace any damaged wires or connectors.

4. Replace Transmission Control Module (if necessary)

• Tools Required: Socket set and torque wrench.
• Locate the TCM (usually found near the transmission).
• Disconnect the electrical connectors from the TCM.
• Remove the mounting bolts using the socket set and carefully take out the TCM.
• Install the new TCM by reversing the removal steps and torque bolts to manufacturer specifications.

5. Reconnect Battery and Clear Codes

• Reconnect the negative battery terminal.
• Use an OBD-II scanner to clear the P0700 code and any related codes.
• Start the vehicle and monitor for any error codes reappearing.