how to fix P0700 code on my Toyota RAV4 Fifth Generation (2019-present)

Solution

1. Preparation

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

2. Inspect and Replace Transmission Fluid

• Fluid Check:
  • Remove the transmission dipstick and check the fluid level and condition.
  • If the fluid is low, add the recommended transmission fluid type (e.g., Toyota WS).
• Fluid Change (if necessary):
  • Drain the old transmission fluid using a fluid pump or by removing the drain plug.
  • Replace the transmission filter if applicable and reinstall the pan with a new gasket.
  • Refill with the recommended amount of new transmission fluid.

3. Repair or Replace Transmission Control Module (if required)

• Remove TCM:
  • Locate the TCM, usually found near the transmission or under the dashboard.
  • Disconnect the wiring harness from the TCM.
  • Remove the mounting bolts using a socket set and take out the TCM.
• Install New TCM:
  • Position the new TCM in place and secure it with the mounting bolts.
  • Reconnect the wiring harness.

4. Reconnect Battery and Clear Codes

• Reconnect the negative battery terminal securely.
• Use the OBD-II scanner to clear the P0700 and any other related trouble codes.

5. Test Drive

• Perform a test drive to ensure that the transmission operates smoothly without any warning lights illuminating.