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Home >> Lexus >> 2020 >> LS 500h AWD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Collision/Avoidance >> Monitor System - Service Information (3 Of 3) >> FRONT SIDE RADAR SENSOR (w/o Front LiDAR Sensor) >> Target Adjustment (Triangle Target) [10/2023 - ] >> Procedure

Target Adjustment (Triangle Target) [10/2023 - ]: Procedure

  1. ADJUST STANDARD VEHICLE HEIGHT 

    Refer to PROCEDURE - Step 2

  2. PERFORM FRONT SIDE RADAR BEAM AXIS CONFIRMATION 
    NOTE:
    • If body repairs have been performed at the radio wave transmission area of the front bumper cover, select a target distance of 2500 mm (8.2 ft.) and be sure to perform "Check Reflection Power".

      Refer to CHECK REFLECTION POWER [10/2023 - ] 

      GTY1235832Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Bumper Rear Side *b Scribed Line
      Radio Wave Transmission Area - -
    • The radiation range of electromagnetic waves is a guide, so when this range is adjusted, a target adjustment and a reflection power check should be performed.
      GTY1230050Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a 192 mm (7.56 in.) *b 120 mm (4.72 in.)
      *c 138 mm (5.43 in.) *d 182 mm (7.17 in.)
      *e 21 mm (0.83 in.) *f 245 mm (9.65 in.)
      *g 140 mm (5.51 in.) *h 278 mm (10.94 in.)
      *j 209 mm (8.23 in.) *k 140 mm (5.51 in.)
      *l 130 mm (5.12 in.) *m 269 mm (10.59 in.)
      GTY1148069Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      		 Radiation Range of Electromagnetic Waves - -

    HINT: 

    • The front side radar beam axis confirmation is performed to confirm whether the sensor's beam axis is correct, and perform adjustment of the beam axis by using reflector.
    • To check the beam axis of the front side radar, select a target distance of 2500 mm (8.2 ft.).
    • The radiation range of electromagnetic waves is a guide, so when this range is adjusted, a target adjustment and a reflection power check should be performed.
    1. When performing the front side radar beam axis confirmation, move the vehicle to a place where the space shown in the illustration can be secured.
      GTY1133343Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *A Right Side of Vehicle *B Left Side of Vehicle
      *a Vehicle Center Line *b Front Bumper
      *c Inspection Area - -

      Standard

      Location Measurement
      a 2 m (6.56 ft.)
      b 4 m (13.12 ft.)
      c 6 m (19.68 ft.)
      NOTE:
      • Perform this inspection on level ground.
      • Make sure that there are no metal objects around the vehicle or on the ground.
      • Unload the vehicle before beginning the inspection.
      • Confirm that the tire pressure is correct before beginning the inspection.

        Refer to PROCEDURE - Step 2

      • Do not place any objects other than the reflector (such as a large metallic object) in the inspection area or allow people to enter the inspection area (W 6 m [19.68 ft.] x L 6 m [19.68 ft.] x H 3 m [9.84 ft.]) shown in the illustration.
    2. Place the reflector.
      1. Hang a weight with a pointed tip from the center of the rear emblem, and mark the rear center point of the vehicle (point A) on the ground.
        GTY792949Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *a String *b Weight
        *c Center point *d Bilateral Symmetry

        HINT: 

        Lightly flick the string with your fingers several times to confirm that the string is aligned with mark A.

      2. Hang a weight with a pointed tip from the center of the radiator grille (or front panel) emblem, and mark the front center point of the vehicle (point B) on the ground.
        GTY966274Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *a String *b Weight
        *c Center point *d Bilateral Symmetry

        HINT: 

        Lightly flick the string with your fingers several times to confirm that the string is aligned with mark B.

      3. Draw a vehicle center line so that it passes through mark A and B (front and rear center points).
        GTY787059Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *a Vehicle center line
      4. Enlarge and print out the poster shown in the illustration.
        GTY1241261Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *a Poster *b Edge of Front Bumper
        *c Line C *d Vehicle Center Line

        Standard

        Part Angle
        a 73.9°
      5. Attach the printed poster to the floor with the vehicle center line aligned with point B as shown in the illustration.
        GTY835428Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *a Poster
        *b Vehicle Center Line
      6. Align a piece of string with line C and mark point D at a distance of 3168 mm (10.4 ft.) from point B.
        GTY807085Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *a Vehicle Front
        *b Vehicle Center Line
        *c String
        *d Poster
      7. Set the reflector at the point D shown in the illustration below.
        • SST: 09870-60000 
          1. 09870-60010
        • SST: 09870-60040 
        GTY801278Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *A Right Side of Vehicle *B Left Side of Vehicle
        *a Vehicle Center Line *b Reflector

        Standard

        Part Length
        a 3168 mm (10.4 ft.)
        NOTE:
        • Set the reflector so that its center is 515 mm (1.69 ft.) above the ground.
          GTY806612Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
          *a SST (reflector)
          *b 515 mm (1.69 ft.)
        • The center of the triangular pyramid is the reference point for the setting position and angle.
          GTY829998Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
          *a Center of Triangular Pyramid
          GTY786174Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
          *a SST (reflector)
    3. Perform the front side radar beam axis display.
      1. Turn the power switch off.
      2. Connect the Techstream to the DLC3.
      3. Turn the power switch ON and turn the front side radar system on.
      4. Turn the Techstream on.
      5. Enter the following menus: Body Electrical / Front Side Radar "A" or Front Side Radar "B" / Utility / Front Side Radar "A" Beam Axis Display or Front Side Radar "B" Beam Axis Display.

        HINT: 

        The "A" is on the RH side and the "B" is on the LH side.

        Body Electrical > Front Side Radar "A" > Utility 

        Tester Display
        Front Side Radar "A" Beam Axis Display

        Body Electrical > Front Side Radar "B" > Utility 

        Tester Display
        Front Side Radar "B" Beam Axis Display
      6. Confirm the conditions displayed on the screen, and then press "Next".
      7. Select "2500 mm (8.2 ft.)" as the target distance and then press "Next".
      8. Perform the procedure in accordance with the instructions on the screen.
      9. Check the results displayed for the front side radar beam axis display.

        Allowable Range

        Item Front Side Radar Sensor ("A") Front Side Radar Sensor ("B")
        Angle -4.1 to +4.1° -4.1 to +4.1°

        HINT: 

        If the displayed results are outside the permissible range, the following are possible causes. Therefore, implement countermeasures, check the front side radar beam axis and perform the procedure again.

        Possible Causes Countermeasure
        Incorrect SST (reflector) position Check the position of SST (reflector) and checking space and perform the procedure again
        A metallic object is located in the vicinity of the checking space Check the position of SST (reflector) and checking space and perform the procedure again
        The front side radar sensor installation is abnormal Check the installation condition of the front side radar sensor
        Refer to ON-VEHICLE INSPECTION [10/2023 - ] 
      10. Enter the following menus: Body Electrical / Front Side Radar "A" or Front Side Radar "B" / Utility / Front Side Radar "A" Beam Axis Adjustment or Front Side Radar "B" Beam Axis Adjustment.

        HINT: 

        The "A" is on the RH side and the "B" is on the LH side.

        Body Electrical > Front Side Radar "A" > Utility 

        Tester Display
        Front Side Radar "A" Beam Axis Adjustment

        Body Electrical > Front Side Radar "B" > Utility 

        Tester Display
        Front Side Radar "B" Beam Axis Adjustment
      11. Confirm the conditions displayed on the screen, and then press "Next".
      12. Select "2500 mm (8.2 ft.)" as the target distance and then press "Next".
      13. In accordance with the screen, perform Front Side Radar "A" Beam Axis Adjustment' or Front Side Radar "B" Beam Axis Adjustment'.

        HINT: 

        • If the result of the front side radar beam axis display is within the specified range, then this adjustment has corrected the value to normal.
        • "Reflector Reflection Power" is displayed after completing the front side radar beam axis adjustment, but is not required.
    4. After the beam axis adjustment is completed, check the "Radio Wave Irradiation Condition" of the millimeter wave radar sensor assembly.

      HINT: 

      When performing the beam axis alignment, temporarily disable operation of the millimeter wave radar sensor assembly to prevent exposure to radio waves from the millimeter wave radar sensor assembly. For this reason, it is necessary to check that the millimeter wave radar sensor assembly is operational after completing beam axis alignment.

      1. Enter the following menus: Body Electrical / Front Radar Sensor / Data List / Radio Wave Irradiation Condition.

        Body Electrical > Front Radar Sensor > Data List 

        Tester Display Measurement Item Range Normal Condition Diagnostic Note
        Radio Wave Irradiation Condition Status of radio wave irradiation Under Radio Wave Irradiation or Under Radio Wave Stopping Under Radio Wave Irradiation: Radio wave irradiation status displayed
        Under Radio Wave Stopping: Radio wave irradiation stopped status displayed        		 -

        Body Electrical > Front Radar Sensor > Data List 

        Tester Display
        Radio Wave Irradiation Condition

        Standard

        The value of the Data List item is displayed as "Under Radio Wave Irradiation".

      2. When the value is "Under Radio Wave Stopping":
        1. Enter the following menus: Body Electrical / Front Radar Sensor / Utility / Radio Wave Irradiation Stop Mode Cancellation.

        Body Electrical > Front Radar Sensor > Utility 

        Tester Display
        Radio Wave Irradiation Stop Mode Cancellation
    5. After beam axis adjustment completes, clear the following system vehicle control history entries.
      1. Clear vehicle control history (Front Side Radar Sensor System).

        Refer to VEHICLE CONTROL HISTORY (RoB) [10/2023 - ]

      2. Clear vehicle control history (Front Camera System).

        Refer to VEHICLE CONTROL HISTORY (RoB) [10/2023 - ]

  3. CHECK VEHICLE HEIGHT CONTROL 

    Refer to PROCEDURE - Step 9

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