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

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

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is in a safe working environment, parked on a level surface.
• Disconnect the vehicle's 12V battery to prevent electrical shorts.

2. Transaxle Fluid Inspection and Replacement

• Sub-steps:
  1. Remove the fluid fill plug from the transmission.
  2. If the fluid level is low, drain the old transmission fluid by removing the drain plug.
  3. Inspect the old fluid for contamination or burning; if contaminated, a full fluid change might be necessary.
  4. Replace the drain plug and fill the transmission with new Tesla-approved transmission fluid until it reaches the proper level.
  5. Reinstall the fill plug securely.

3. Electrical Connection Check

• Sub-steps:
  1. Visually 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.
  3. Reconnect all connectors securely.

4. Transmission Control Module Testing

• Sub-steps:
  1. Reconnect the battery.
  2. Use specialized diagnostic software to communicate with the transmission control module.
  3. Check for any fault codes and monitor live data for proper operation.
  4. If the module shows faults, replace it according to manufacturer's specifications.

5. Final Assembly and Testing

• Sub-steps:
  1. Reinstall any components removed during the service.
  2. Ensure all bolts are torqued to manufacturer specifications.
  3. Start the vehicle and check for any warning lights.
  4. Conduct a test drive to ensure proper shifting and performance.

Tools Required:

• OBD-II scanner
• Socket set
• Torque wrench
• Electrical contact cleaner
• Fluid pump for transmission fluid

Parts Required:

• Tesla-approved transmission fluid
• Transmission control module (if faulty)

Estimated Repair Time: 2-4 hours

Safety Warnings:

• Disconnect the battery before working on electrical systems.
• Allow the vehicle to cool before inspecting the transmission fluid.