what does code P0700 mean for my Toyota Highlander XU70 (2020-Present)?

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a level surface and the engine is off.
• Disconnect the battery to reset the system.

2. Inspect and Replace Transmission Fluid

• Sub-steps:
  1. Locate the transmission fluid dipstick or drain plug.
  2. If necessary, drain the old fluid using a catch pan (follow manufacturer's guidelines).
  3. Replace with the correct type of transmission fluid (e.g., Toyota ATF WS).
  4. Refill the transmission fluid to the proper level.
• Tools Required:
  • Catch pan
  • Funnel
  • Torque wrench (if applicable for drain plug)

3. Check and Repair Wiring/Connectors

• Sub-steps:
  1. Visually inspect the wires and connectors leading to the TCM for any damage.
  2. Repair or replace any damaged wiring or connectors as necessary.
• Tools Required:
  • Wire stripper/crimper
  • Multimeter

4. Replace Transmission Control Module (if necessary)

• Sub-steps:
  1. Locate the TCM (typically near the transmission or under the dashboard).
  2. Disconnect the electrical connectors from the TCM.
  3. Remove the mounting screws and take out the old TCM.
  4. Install the new TCM, ensuring it is securely mounted and connectors are firmly attached.
• Tools Required:
  • Socket set
  • Screwdriver set