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Home >> Lexus >> 2016 >> GS 450h Base >> Repair and Diagnosis >> Suspension >> Wheel Alignment >> Wheel Alignment (Service Information) >> Rear Wheel Alignment >> Adjustment [09/2014 - 10/2015] >> Procedure

Adjustment [09/2014 - 10/2015]: Procedure

  1. INSPECT TIRES 

    (See article. Refer to INSPECTION [09/2014 - 10/2015] )

  2. MEASURE VEHICLE HEIGHT 

    (See article. Refer to ADJUSTMENT [09/2014 - 10/2015] )

    NOTE:

    Before inspecting wheel alignment, adjust vehicle height to the specified value.

  3. INSPECT CAMBER 
    1. Install a camber-caster-kingpin gauge or put the wheels on a wheel alignment tester.
      TEXT IN ILLUSTRATION

      *1 Gauge
      GTY409772Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Inspect the camber.

      CAMBER

      Camber -1°32' +/-45'
      (-1.53° +/-0.75°)
      Right-left error 45' (0.75°) or less

      If the measured value is not within the specified range, inspect the suspension parts for damage and wear. Replace parts as necessary because camber cannot be properly adjusted with any damaged or worn parts.

  4. INSPECT TOE-IN 
    GTY524752Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    TEXT IN ILLUSTRATION

    Front of Vehicle

    Toe-in (Unloaded Vehicle)

    Toe-in A: 0°7.7' +/-5' (0.13° +/-0.09°)
    B - C: 3 +/-2 mm (0.12 +/-0.08 in.)

    If the toe-in is not within the specified range, inspect the suspension parts and replace if necessary.

  5. ADJUST TOE-IN (w/o DYNAMIC REAR STEERING) 
    1. Loosen the toe adjust cam nut.
      GTY416060Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Turn the adjust cams by an equal amount to adjust toe-in.

      HINT: 

      • Try to adjust the toe-in to the center value.
      • The toe-in will change by the following specifications corresponding to each graduation of the cam.

        Approx. 4.7 mm (0.19 in.)

    3. Tighten the nut.

      Torque: 117 N*m (1193 kgf*cm, 86 ft.*lbf) 

  6. ADJUST TOE-IN (w/ DYNAMIC REAR STEERING) 
    NOTE:

    If any underbody rear suspension parts are removed and installed, replaced or adjusted, the steering wheel may become off center. Therefore, perform neutral point memorization and motor rotation angle sensor calibration.

    1. Measure the thread lengths of the right and left rack ends.
      GTY395911Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard

      Difference in thread length of 1.5 mm (0.059 in.) or less

    2. Remove the rack boot set clips.
    3. Loosen the tie rod end lock nuts.
    4. Adjust the rack ends if the difference in thread length between the right and left rack ends is not within the specified range.
      1. Extend the shorter rack end if the measured toe-in deviates toward the inner-side.
      2. Shorten the longer rack end if the measured toe-in deviates toward the outer-side.
    5. Turn the right and left rack ends by an equal amount to adjust toe-in.

      HINT: 

      Try to adjust toe-in to the center of the specified range.

    6. Make sure that the lengths of the right and left rack ends are the same.
    7. Tighten the tie rod end lock nuts.

      Torque: 55 N*m (561 kgf*cm, 41 ft.*lbf) 

      NOTE:

      Temporarily tighten the lock nut while holding the hexagonal part of the steering rack end so that the lock nut and the steering rack end do not turn together. Hold the width across flat of the tie rod end and tighten the lock nut.

    8. Place the boots on the seats and install the clips.
    9. Perform neutral position memorization and motor rotation angle sensor calibration for the dynamic rear steering system (See article. Refer to CALIBRATION [09/2014 - ] ).
  7. INSPECT REAR SUSPENSION 
    1. Inspect the rear suspension member.
      GTY395907Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Measure the distance between the centers of the installation bolts of the rear No. 2 suspension arm assembly LH and RH.

        Standard

        536.8 to 543.7 mm (1.761 to 1.783 ft.)

        HINT: 

        If the distance is not within the specified range, replace the rear suspension member.

    2. Inspect the rear No. 2 suspension arm assembly.
      GTY395910Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Measure the distance between the centers of the 2 installation bolts of the rear No. 2 suspension arm assembly.

        Standard

        433.5 to 434.5 mm (1.422 to 1.425 ft.)

        HINT: 

        If the distance is not within the specified range, replace the rear No. 2 suspension arm assembly.

    3. Inspect the rear upper control arm assembly.
      GTY416061Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Measure the distance between the centers of the installation bolt of the upper control arm assembly rear No. 2 and the ball joint stud.

        Standard

        299 mm (11.77 in.)

        HINT: 

        If the distance is not within the specified range, replace the rear upper control arm assembly.

    4. Inspect and adjust toe-in and camber.
      1. Inspect toe-in and camber.

        If the values are not within the specified range, adjust the installation bolt holding the rear suspension member to the vehicle body, or the bolt holding the upper control arm and rear suspension arm so that the values fall within the specified range.

  8. PLACE FRONT WHEELS FACING STRAIGHT AHEAD 
  9. REMOVE LUGGAGE COMPARTMENT FLOOR MAT 

    Refer to PROCEDURE - Step 1

  10. REMOVE LUGGAGE COMPARTMENT TRIM COVER LH 

    Refer to PROCEDURE - Step 2

  11. DISCONNECT CABLE FROM NEGATIVE AUXILIARY BATTERY TERMINAL 
    NOTE:

    Disconnect the cable from the negative (-) battery terminal for more than 2 seconds.

  12. CONNECT CABLE TO NEGATIVE AUXILIARY BATTERY TERMINAL 
    NOTE:

    When disconnecting the cable, some systems need to be initialized after the cable is reconnected (See article. Refer to INITIALIZATION [09/2014 - 10/2015] ).

  13. INSTALL LUGGAGE COMPARTMENT TRIM COVER LH 

    Refer to PROCEDURE - Step 24

  14. INSTALL LUGGAGE COMPARTMENT FLOOR MAT 

    Refer to PROCEDURE - Step 26

  15. PERFORM YAW RATE AND ACCELERATION SENSOR ZERO POINT CALIBRATION 

    (See article. Refer to CALIBRATION [09/2014 - ] )

  16. CHECK STEERING ANGLE SENSOR ZERO POINT CALIBRATION 

    (See article. Refer to CALIBRATION [09/2014 - ] )