Last Modified: 01-30-2024 6.11:8.1.0 Doc ID: RM100000001R68O
Model Year Start: 2021 Model: RAV4 Prod Date Range: [08/2020 - 12/2021]
Title: CRUISE CONTROL: FRONT RADAR SENSOR SYSTEM: VEHICLE CONTROL HISTORY; 2021 MY RAV4 RAV4 HV [08/2020 - 12/2021]

VEHICLE CONTROL HISTORY

NOTICE:

When checking the Vehicle Control History, make sure to record the output codes. Then, clear the Vehicle Control History (RoB) and check it again.

CHECK VEHICLE CONTROL HISTORY (FRONT RADAR SENSOR SYSTEM)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Front Radar Sensor / Utility / Vehicle Control History (RoB).

Body Electrical > Front Radar Sensor > Utility

Tester Display

Vehicle Control History (RoB)

Vehicle Control History (RoB)

Multi-information Display

Code

Tester Display

Description

Diagnostic Note

Pre-Collision System Malfunction Visit Your Dealer

X2023

Front Radar Sensor Optical Axis Not Adjusted

History of millimeter wave radar sensor assembly beam axis not being adjusted.

If this Vehicle Control History code is stored, clear the Vehicle Control History (RoB) after performing front beam axis adjustment, and then check that this code is not output again.

2019 - 2021 MY RAV4 RAV4 HV [02/2019 - 12/2021]; CRUISE CONTROL: MILLIMETER WAVE RADAR SENSOR: ADJUSTMENT

Pre-Collision System Unavailable

X2024

Front Radar Sensor Temporary Unavailable (Vertical Direction Optical Axis Misalignment)

History of millimeter wave radar sensor assembly beam axis misalignment (vertical).

Stored when the vehicle is being driven and the vertical beam axis is calibrated.

Pre-Collision System Unavailable

X2025

Front Radar Sensor Temporary Unavailable (Horizontal Direction Optical Axis Misalignment)

History of millimeter wave radar sensor assembly beam axis misalignment (horizontal).

Stored when the vehicle is being driven and the horizontal beam axis is calibrated.

Pre-Collision System Unavailable Clean Sensor

X2026

Front Radar Sensor Dirt

History of system operation being temporarily suspended due to millimeter wave radar sensor assembly not being able to detect objects.

Check if any of the following conditions are met:

  • A non-genuine front grille emblem is installed
  • The millimeter wave radar sensor assembly or front grille emblem and its surrounding area are dirty
  • An accessory, such as bull bars, a grille guard, etc., which interferes with millimeter radio waves is installed
  • The front grille emblem or its surrounding area has been painted or has a sticker attached
  • There is foreign matter attached to the front grille emblem or millimeter wave radar sensor assembly

Cause:

  • The millimeter wave radar sensor assembly is dirty or obstructed by foreign matter.

Pre-Collision System Unavailable

X2027

Front Radar Sensor Outside Guaranteed Operating Temperature

History of system operation being temporarily suspended due to the millimeter wave radar sensor assembly being excessively hot or cold.
  1. Using the Techstream, check "Millimeter-wave Circuit Temperature Protection" in the Data List for Front Radar Sensor.

    2019 - 2021 MY RAV4 RAV4 HV [11/2018 - 12/2021]; CRUISE CONTROL: FRONT RADAR SENSOR SYSTEM: DATA LIST / ACTIVE TEST

  2. If the value of "Millimeter-wave Circuit Temperature Protection" is ON, warm or cool the area around the millimeter wave radar sensor assembly.

Cause:

  • The following millimeter wave radar sensor assembly conditions are met:
    • After being subjected to an extremely cold environment, the area around the millimeter wave radar sensor assembly is -30°C (-22°F) or less.
    • After being subjected to an extremely hot environment, the area around the millimeter wave radar sensor assembly is 70°C (158°F) or more.

Pre-Collision System Unavailable

X2028

Front Radar Sensor Outside Guaranteed Operating Voltage

History of system operation being temporarily suspended due to millimeter wave radar sensor assembly power source voltage being excessively high or low.
  1. If this Vehicle Control History code is output, clear the Vehicle Control History (RoB), drive the vehicle at 5 km/h (3 mph) or more and then check if this Vehicle Control History code is output again.
  2. If output again, check if the voltage between terminals IGB and SGND of the millimeter wave radar sensor assembly is within the specified range.

    2019 - 2021 MY RAV4 RAV4 HV [11/2018 - 12/2021]; CRUISE CONTROL: FRONT RADAR SENSOR SYSTEM: TERMINALS OF ECU

  3. Using the Techstream, check "IG Voltage" in the Data List for Front Radar Sensor.

    2019 - 2021 MY RAV4 RAV4 HV [11/2018 - 12/2021]; CRUISE CONTROL: FRONT RADAR SENSOR SYSTEM: DATA LIST / ACTIVE TEST

  4. If the value of "IG Voltage" is ON, check if the voltage between terminals IGB and SGND of the millimeter wave radar sensor assembly is within the specified range.

    2019 - 2021 MY RAV4 RAV4 HV [11/2018 - 12/2021]; CRUISE CONTROL: FRONT RADAR SENSOR SYSTEM: TERMINALS OF ECU

  5. w/ Stop and Start System:

    As power for the millimeter wave radar sensor assembly is supplied by the start and stop system, confirm that the start and stop system is not malfunctioning. 2019 - 2023 MY RAV4 [11/2018 - 10/2023]; STOP AND START: STOP AND START SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING

Cause:

  • The following millimeter wave radar sensor assembly conditions are met:
  • for HV Model:
    • The input voltage decreases to approximately 8 V or less directly after the hybrid system starts.
    • The input voltage increases to approximately 16 V or more directly after the hybrid system starts.
  • for Gasoline Model:
    • The input voltage decreases to approximately 8 V or less directly after the engine is started.
    • The input voltage increases to approximately 16 V or more directly after the engine is started.

CLEAR VEHICLE CONTROL HISTORY (FRONT RADAR SENSOR SYSTEM)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Front Radar Sensor / Utility / Vehicle Control History (RoB).

Body Electrical > Front Radar Sensor > Utility

Tester Display

Vehicle Control History (RoB)

(e) According to the display on the Techstream, clear the Vehicle Control History (RoB).

NOTICE:

By performing this procedure, all stored Vehicle Control History will be cleared.

CHECK VEHICLE CONTROL HISTORY (AIRBAG SYSTEM)

HINT:

A part of the control history can be confirmed using the Vehicle Control History.

Click here 2021 - 2024 MY RAV4 RAV4 HV [08/2020 -        ]; SUPPLEMENTAL RESTRAINT SYSTEMS: AIRBAG SYSTEM: VEHICLE CONTROL HISTORY