how to fix P0700 code in Tesla Model Y Current (2020-present)

Solution

1. Preparation

• Gather tools and parts needed for the repair.
• Ensure the vehicle is parked on a flat surface and the parking brake is engaged.
• Disconnect the 12V battery to avoid electrical shorts during inspection.

2. Inspect Transmission Fluid

• Sub-steps:
  • Locate the transmission fluid dipstick or fill port.
  • Remove the dipstick, wipe it clean, then reinsert it to check the fluid level.
  • If the fluid is low, add the recommended type of transmission fluid (consult owner's manual).
  • If the fluid appears dark or has a burnt smell, consider a fluid change.
• Tools Required: Fluid pump (if adding fluid), funnel.

3. Update Software

• Sub-steps:
  • Connect the vehicle to Wi-Fi and check for software updates through the Tesla app or vehicle settings.
  • If an update is available, follow the prompts to install it.
• Tools Required: Internet connection.

4. Examine Wiring and Connectors

• Sub-steps:
  • Visually inspect the wiring harness leading to the TCM for any signs of wear or damage.
  • Disconnect and reconnect the TCM connectors to ensure a tight fit.
  • Use a multimeter to test for continuity in the wiring if issues are detected.
• Tools Required: Multimeter.

5. Reset System

• Sub-steps:
  • Disconnect the negative terminal of the 12V battery for 5-10 minutes.
  • Reconnect the battery terminal securely.
  • Start the vehicle and check if the warning light has cleared.
• Safety Warnings: Ensure you have the radio code and other settings backed up, as disconnecting the battery may reset some electronic systems.