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Home >> Subaru >> 2021 >> Ascent Base >> Repair and Diagnosis >> Accessories & Equipment >> Drivers Assistance Systems - ADAS >> Blind Spot Detection/Rear Cross Traffic Alert System >> Radar Sensor >> Adjustment >> Radar Axis Adjustment

Radar Axis Adjustment

CAUTION:
  • After removal/installation or replacement of the radar sensor or radar bracket, perform the radar axis adjustment.
  • The procedure for the master is only shown here. However the procedure for the slave can also be done in the same way as the master.
  1. Before performing the inspection, check the following items.
    • The inflation pressure of tires is correct.
    • The vehicle does not have load.
    • Vehicle's fuel tank is fully filled.
  2. Place the vehicle on a level surface, where approximately 5 m (16.41 ft) square area can be secured behind the vehicle.
    CAUTION:
    • No metallic objects around the vehicle and on the floor in the area.
    • Do not let in objects other than the radar reflector (ST), persons and metallic objects inside the area.
    G13865667Courtesy of SUBARU OF AMERICA, INC.
    NOTE: The illustration shows the secured area for adjusting the radar axis on the master side.
  3. Prepare the Subaru Select Monitor, measure, leveling line, plumb bob, packing tape, RADAR REFLECTOR (ST), and stand or tripod for fixing the RADAR REFLECTOR.

    Preparation tool: 

    ST: RADAR REFLECTOR (87699AL00A)

  4. Set up the radar reflector.
    NOTE: The following procedure explains the method of setting the radar reflector so that the distance between radar reflector and radar sensor is 1, 500 mm (4.92 ft) and the radar is positioned at an angle of 50 degrees.
    1. Suspend the plumb bob from the center of the under cover rear LH mounting bolt, and mark the position where the plumb bob touches the ground. (Point A)
      G13865668Courtesy of SUBARU OF AMERICA, INC.
      NOTE: Stick the packing tape etc. on the floor, then make a marking on the tape.
    2. Suspend the plumb bob from the center of the bumper face rear mounting clip, and mark the position where the plumb bob touches the ground. (Point B)
      G13865669Courtesy of SUBARU OF AMERICA, INC.
      NOTE: Stick the packing tape etc. on the floor, then make a marking on the tape.
    3. Stretch a leveling line to draw an arc with the marked point A as a pivot.
    4. Stretch a leveling line to draw an arc with the marked point B as a pivot.
    5. Set up the radar reflector at the cross point.
    CAUTION: When setting up the radar reflector, adjust the height so that the center of the pyramid points at the radar sensor as shown in the figure.
    G13865670Courtesy of SUBARU OF AMERICA, INC.
    G13865671Courtesy of SUBARU OF AMERICA, INC.
  5. Connect the Subaru Select Monitor.
  6. Turn the ignition switch to ON and wait for 10 seconds.
  7. Perform radar axis adjustment.
    1. Using the Subaru Select Monitor, select [Work Support] on the [Select Function] display. Ref. to COMMON (diag)>Work Support>OPERATION .
    2. On the work support item list, select [RADAR Alignment].
    3. Follow the messages displayed on the Subaru Select Monitor screen when working.
      NOTE: Deviation of radar axis direction is indicated by + (plus) or - (minus).
      G13865672Courtesy of SUBARU OF AMERICA, INC.
    4. If the result is out of permissive range, it is assumed that the radar reflector position may be incorrect or the radar bracket or its installation location on the vehicle may be deformed. Check the set position of the radar reflector, radar bracket and other attachment, and perform the radar axis adjustment again.
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