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HOMESERVICE MANUALSTOYOTA2020RAV4 XLE, AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 20 (ENGINE CONTROL SYSTEM (A25A-FXS) - DIAGNOSTICS - INTRODUCTION (1 OF 4))SFI SYSTEMREGISTRATION [08/2020 - ]PROCEDURE
2020 Toyota RAV4 XLE, AWD

Registration [08/2020 - ]: Procedure

2020 Toyota RAV4 XLE, AWDSECTION Procedure
WARNING: This page is about a different car, the 2025 Toyota RAV4, 2024 Toyota RAV4, 2023 Toyota RAV4, 2022 Toyota RAV4, and 2021 Toyota RAV4. However, it is still accessible from the selected car via links, so may be relevant.
  1. VIN (VEHICLE IDENTIFICATION NUMBER) 
    NOTE:

    The Vehicle Identification Number (VIN) must be written to a replacement ECM.

    HINT: 

    The VIN is a 17-digit alphanumeric vehicle identification number. The Techstream is required to register the VIN.

    1. DESCRIPTION

      HINT: 

      This registration information consists of 2 parts: Read VIN and Write VIN.

      1. Read VIN: This procedure allows the VIN stored in the ECM to be read in order to confirm that the 2 VINs, provided with the vehicle and stored in the vehicle ECM, are the same.
      2. Write VIN: This procedure allows the VIN to be written into the ECM. If the ECM is replaced, or the ECM VIN and vehicle VIN do not match, the VIN can be registered, or overwritten in the ECM by following this procedure.
    2. READ VIN
      1. Confirm the vehicle VIN.
      2. Connect the Techstream to the DLC3.
      3. Turn the ignition switch to ON.
      4. Turn the Techstream on.
      5. Enter the following menus: Powertrain / Engine / Utility / VIN / VIN Read.

        Powertrain > Engine > Utility 

        Tester Display
        VIN
      6. According to the display on the Techstream, read the VIN stored in the ECM.
    3. WRITE VIN
      1. Confirm the vehicle VIN.
      2. Connect the Techstream to the DLC3.
      3. Turn the ignition switch to ON.
      4. Turn the Techstream on.
      5. Enter the following menus: Powertrain / Engine / Utility / VIN / VIN Write.

        Powertrain > Engine > Utility 

        Tester Display
        VIN
      6. According to the display on the Techstream, write the VIN to the ECM.
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.