Vehicle control history:

• X2024: Front Radar Sensor Temporary Unavailable (Vertical Direction Optical Axis Misalignment)

1. Check the vehicle control history of the front radar sensor system.

   

2. Perform millimeter wave radar sensor assembly beam axis alignment.

   HINT:

   Beam axis alignment of the millimeter wave radar sensor assembly can be performed using either Triangle Target, Flat Surface Target or Driving Adjustment.

   Triangle Target:

   Flat Surface Target:

   Driving Adjustment:

3. Turn the ignition switch off.
4. Turn the ignition switch to ON.
5. Check that "Pre-Collision System Unavailable" is not displayed on the multi-information display.

• A determination was made that millimeter wave radar sensor assembly vertical axis was misaligned.

Vehicle control history:

• X2026: Front Radar Sensor Dirt

1. Check the vehicle control history of the front radar sensor system.

   

2. Check whether the millimeter wave radar sensor assembly and surrounding area is dirty or obstructed by foreign matter
   • A non-genuine millimeter wave sensor cover is installed
   • There is dirt on the radar, the radar sensor cover or the surrounding area
   • An accessory, such as bull bars, a grille guard, etc., which interferes with millimeter radio waves is installed
   • The sensor cover or its surrounding area has been painted or has a sticker attached
   • There is foreign matter between the radar and radar sensor cover
3. Clean away any dirt or foreign matter that is adhering to the area around the millimeter wave radar sensor assembly.
4. Turn the ignition switch off.
5. Start the hybrid system and drive the vehicle for 5 minutes or more.*1
6. Start the engine and drive the vehicle for 5 minutes or more.*2
7. Check whether "Pre-Collision System Unavailable Clean Sensor" is displayed on the multi-information display.
8. If the message is still displayed, perform beam axis alignment of the millimeter wave radar sensor assembly.

   HINT:

   Beam axis alignment of the millimeter wave radar sensor assembly can be performed using either Triangle Target, Flat Surface Target or Driving Adjustment.

   Triangle Target:

   Flat Surface Target:

   Driving Adjustment:

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

Vehicle control history:

• X2027: Front Radar Sensor Outside Guaranteed Operating Temperature

1. Check the vehicle control history of the front radar sensor system.

   

2. Using the Techstream, check "Millimeter-wave Circuit Temperature Protection" in the Data List for Front Radar Sensor.

   

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

• 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.

Vehicle control history:

• X2028: Front Radar Sensor Outside Guaranteed Operating Voltage

1. Check the vehicle control history of the front radar sensor system.

   

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

   

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

   

• The following millimeter wave radar sensor assembly conditions are met:
  • The input voltage decreases to approximately 8 V or less directly after the hybrid system is starts.*1
  • The input voltage increases to approximately 16 V or more directly after the hybrid system is starts.*1
  • The input voltage decreases to approximately 8 V or less directly after the engine is starts.*2
  • The input voltage increases to approximately 16 V or more directly after the engine is starts.*2

Vehicle control history:

• X202B: Front Radar Sensor Temporary Unavailable (Radio Wave Interference)

1. Check the vehicle control history of the front radar sensor system.

   

2. Move the vehicle to a different location until "Pre-Collision System Unavailable" disappears from the multi-information display.

• Determination was made for temporary suspension of system operation due to millimeter wave radar sensor assembly detecting interference from other nearby radar emitters.