what does it mean when my Toyota Highlander shows code P0700

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the battery to ensure safety while working on electrical components.

2. Inspect and Replace Transmission Fluid

• Sub-steps:
  1. Raise the vehicle securely using jack stands.
  2. Locate the transmission dipstick and remove it.
  3. Check the fluid level; if low, add the appropriate Toyota transmission fluid (typically Toyota WS type).
  4. If the fluid is dark or has a burnt smell, drain and replace the fluid using a fluid pump.
  5. Replace the transmission filter if applicable.

3. Repair or Replace Faulty Components

• Sub-steps:
  1. If any wiring or connectors are damaged, repair or replace them as necessary.
  2. If the TCM is found faulty during testing, remove it from its mounting location.
  3. Install the new TCM, ensuring all connectors are secure.
  4. Reconnect the battery and clear the error codes using the OBD-II scanner.

4. Recheck Fluid Levels

• Sub-steps:
  1. After repairs, ensure the transmission fluid level is at the proper level again.
  2. Run the engine and cycle through the gears to ensure smooth operation.