Dynamic Radar Cruise Control System Adjustment

Cruise Control System. Lexus Gs430, Gs300. Uzs190 Grs190
Cruise Control. Lexus Gs430, Gs300. Uzs190 Grs190

  1. REMOVE COOL AIR INTAKE DUCT SEAL

  2. REMOVE ENGINE UNDER COVER

  3. REMOVE FRONT FENDER LINER LH

  4. REMOVE FRONT FENDER LINER RH

  5. REMOVE FRONT BUMPER COVER

  6. ADJUST MILLIMETER WAVE RADAR SENSOR ASSEMBLY

  7. INSTALL FRONT BUMPER COVER

  8. INSTALL FRONT FENDER LINER LH

  9. INSTALL FRONT FENDER LINER RH

  10. INSTALL ENGINE UNDER COVER

  11. INSTALL COOL AIR INTAKE DUCT SEAL

Dynamic Radar Cruise Control System -- Adjustment



1. REMOVE COOL AIR INTAKE DUCT SEAL


Lexus Gs430, Gs300. Uzs190 Grs190
  1. Using a clip remover, remove the 7 clips and duct seal.



2. REMOVE ENGINE UNDER COVER


Lexus Gs430, Gs300. Uzs190 Grs190
  1. Using a clip remover, remove the 3 clips.

  1. Remove the 10 screws and under cover.



3. REMOVE FRONT FENDER LINER LH


Lexus Gs430, Gs300. Uzs190 Grs190
  1. Using a screwdriver, remove the 2 clips.

  1. Partially remove the fender liner.

    HINT:
    It is not necessary to fully remove the fender liner. Partially remove it so that the bumper assembly can be removed later.


4. REMOVE FRONT FENDER LINER RH
HINT:
Use the same procedures described for the LH side.


5. REMOVE FRONT BUMPER COVER
  1. Using a clip remover, remove the 2 clips.

    HINT:
    Put protective tape under the front fender.


    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Remove the 6 screws and 5 bolts.



    Lexus Gs430, Gs300. Uzs190 Grs190.Cruise Control.Cruise Control System.Dynamic Radar Cruise Control System  Adjustment
  1. Pull the bumper cover to detach the 3 claws on the LH side.

  1. Pull the bumper cover to detach the 3 claws on the RH side and remove the bumper cover.

  1. w/ Clearance sonar system:
    Disconnect the ultrasonic sensor connector.



6. ADJUST MILLIMETER WAVE RADAR SENSOR ASSEMBLY


Lexus Gs430, Gs300. Uzs190 Grs190.Cruise Control.Cruise Control System.Dynamic Radar Cruise Control System  Adjustment
CAUTION:
Exposure to radio frequency emissions is hazardous to your health. It is hazardous to be within 20 cm (7.9 in.) of the device's radio frequency aperture.
NOTICE:
  1. This device complies with FCC radio frequency emission regulations.
  2. Perform measurements on a level surface.
  3. Make sure that no large pieces of metal are within a 10 m (32.81 ft.) x 14 m (45.93 ft.) area in front of the vehicle. If possible, the surrounding area should also be free of large metal objects.
  1. Before adjusting the radar beam axis, prepare the vehicle as follows.

    1. Check the tire pressure and adjust it if necessary.

    2. Remove all excess weight from the vehicle (luggage, heavy objects, etc.).

  1. w/ Air suspension:
    Adjust the vehicle's height to the standard height.



  1. Check and adjust the vertical direction of the radar sensor.



      Lexus Gs430, Gs300. Uzs190 Grs190.Cruise Control.Cruise Control System.Dynamic Radar Cruise Control System  Adjustment
    1. Remove dust, oil and foreign matter from the radar sensor's level rack.

    2. Set a level on the radar sensor's level rack.



    3. Lexus Gs430, Gs300. Uzs190 Grs190.Cruise Control.Cruise Control System.Dynamic Radar Cruise Control System  Adjustment
    4. Check that the level's air bubble is within the red frame.

      OK:
      Level's air bubble is within red frame.
      If the bubble is not within the red frame, use a hexagon wrench to adjust screw A until the level's air bubble is within the red frame.
      HINT:
      1. The adjustable range within the red frame of the level is +- 0.2°.
      2. The target angle is +0.2° (upward angle of 0.2°).

      1. Result:

        Adjustment Direction
        Adjustment Procedure
        Adjustment Angle
        Vertical adjustment
        1. Upward direction: Turn screw A to negative (-) side
        2. Downward direction: Turn screw A to positive (+) side
        Approx. 1.0° per turn


    Lexus Gs430, Gs300. Uzs190 Grs190.Cruise Control.Cruise Control System.Dynamic Radar Cruise Control System  Adjustment
  1. Adjust the reflector height.

    1. Adjust the reflector so that the center of the SST reflector is the same height as the millimeter wave radar sensor.

      SST
      09870-60000
      HINT:
      Prepare a 10 m (32.81 ft.) string, a string with a sharp-pointed weight (plumb bob), and a 5 m (16.41 ft.) tape measure.


    Lexus Gs430, Gs300. Uzs190 Grs190.Cruise Control.Cruise Control System.Dynamic Radar Cruise Control System  Adjustment
  1. Place the reflector.

    1. Hang the string (with weight) from the center of the vehicle rear's emblem. Mark the vehicle rear's center point on the ground. Repeat for the front of the vehicle.



    2. Lexus Gs430, Gs300. Uzs190 Grs190.Cruise Control.Cruise Control System.Dynamic Radar Cruise Control System  Adjustment
    3. Set one end of the 10 m (32.82 ft.) string on the vehicle rear's center point. Run the string over the vehicle front's center point to a position 5 m (16.41 ft.) beyond the vehicle front's center point, as shown in the illustration. Mark the 5 m (16.41 ft.) position.



    4. Using a tape measure, measure 12 mm (0.47 in.) to the left of the 5 m (16.41 ft.) position. Place the reflector at that position.

      NOTICE:
      Perform the operation as precisely as possible.


      Lexus Gs430, Gs300. Uzs190 Grs190.Cruise Control.Cruise Control System.Dynamic Radar Cruise Control System  Adjustment



    Lexus Gs430, Gs300. Uzs190 Grs190.Cruise Control.Cruise Control System.Dynamic Radar Cruise Control System  Adjustment
  1. Adjust the radar beam axis.

    1. Connect the intelligent tester to the DLC3.

    2. Turn the engine switch on (IG).



    3. Turn the intelligent tester main switch ON, and turn the cruise control main switch ON.


      Lexus Gs430, Gs300. Uzs190 Grs190.Cruise Control.Cruise Control System.Dynamic Radar Cruise Control System  Adjustment



      Lexus Gs430, Gs300. Uzs190 Grs190.Cruise Control.Cruise Control System.Dynamic Radar Cruise Control System  Adjustment



  1. Check and adjust the horizontal direction of the radar sensor.

    1. Check that the divergence of the radar beam axis is 0° .

      Standard:
      0° (Both right and left)
      If the axis is not as specified, use a hexagon wrench to adjust screw B until the divergence of the radar beam axis is 0°.


    2. Lexus Gs430, Gs300. Uzs190 Grs190.Cruise Control.Cruise Control System.Dynamic Radar Cruise Control System  Adjustment
    3. Based on the measured divergence of the beam axis, turn and adjust screw B for horizontal adjustment of the millimeter wave radar sensor using a hexagon wrench.

      Result:

      Adjustment Direction
      Adjustment Procedure
      Adjustment Angle
      Horizontal adjustment
      1. Right direction: Turn screw B to positive (+) side.
      2. Left direction: Turn screw B to negative (-) side.
      Approx. 0.33° per turn
      HINT:
      1. If "LEFT SIDE: 1.0°" is displayed, the divergence is 1.0° in the left direction. Turn screw B approximately 3 turns to the negative (-) side.
      2. If the value does not change to 0°, it is possible that the sensor is aiming at something different. Reconfirm that there are no reflective materials in the surrounding area.


    4. Lexus Gs430, Gs300. Uzs190 Grs190.Cruise Control.Cruise Control System.Dynamic Radar Cruise Control System  Adjustment
    5. Reset the radar sensor's driving learning values. Prepare a type of metal that can block radio waves, such as aluminum foil. Cover the radar sensor's left half with the metal for 10 seconds.

      NOTICE:
      Be sure to keep the reflector in place and make sure that there is nothing between the sensor's left half and the reflector.
      HINT:
      When the reset is completed, the buzzer sounds for 10 seconds.
    6. Disconnect the intelligent tester from the DLC3.



  1. Recheck and readjust the vertical direction of the radar sensor.



      Lexus Gs430, Gs300. Uzs190 Grs190.Cruise Control.Cruise Control System.Dynamic Radar Cruise Control System  Adjustment
    1. Set a level on the radar sensor's level rack.



    2. Lexus Gs430, Gs300. Uzs190 Grs190.Cruise Control.Cruise Control System.Dynamic Radar Cruise Control System  Adjustment
    3. Check that the level's air bubble is within the red frame.

      OK:
      Level's air bubble is within the red frame.
      If the bubble is not within the red frame, use a hexagon wrench to adjust screw A until the level's air bubble is within the red frame.
      HINT:
      1. The adjustable range within the red frame is +- 0.2°.
      2. The target angle is +0.2° (upward angle of 0.2°).

      Result:

      Adjustment Direction
      Adjustment Procedure
      Adjustment Angle
      Vertical adjustment
      1. Upward direction: Turn screw A to negative (-) side
      2. Downward direction: Turn screw A to positive (+) side
      Approx. 1.0° per turn


7. INSTALL FRONT BUMPER COVER
  1. Connect the ultrasonic sensor connector.



    Lexus Gs430, Gs300. Uzs190 Grs190.Cruise Control.Cruise Control System.Dynamic Radar Cruise Control System  Adjustment
  1. Attach the 3 claws on the LH side.

  1. Attach the 3 claws on the RH side.



    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Install the bumper cover with the 2 clips, 6 screws and 5 bolts.



8. INSTALL FRONT FENDER LINER LH


    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Install the fender liner with the 2 clips.



9. INSTALL FRONT FENDER LINER RH
HINT:
Use the same procedures described for the LH side.


10. INSTALL ENGINE UNDER COVER


Lexus Gs430, Gs300. Uzs190 Grs190
  1. Install the under cover with the 3 clips and 10 screws.



11. INSTALL COOL AIR INTAKE DUCT SEAL


Lexus Gs430, Gs300. Uzs190 Grs190
  1. Install the duct seal with the 7 clips.