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Steering System: Adjustment

WARNING: This page is about a different car, the 2008 Lexus IS F. However, it is still accessible from the selected car via links, so may be relevant.
  1. STEERING OFF CENTER ADJUSTMENT PROCEDURE 

    HINT

    This is the steering wheel off center adjustment procedure.

    1. Inspect steering wheel off center
      1. Apply masking tape on the top center of the steering wheel and steering column upper cover
      2. Drive the vehicle in a straight line for 100 meters at a constant speed of 35 mph (56 km/h), while holding the steering wheel to maintain the course
        Fig 1: Applying Masking Tape On Top Center Of Steering Wheel And Steering Column Upper Cover
        G05753016Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      3. Draw a line on the masking tape as shown in the illustration
      4. Turn the steering wheel to the center position

        HINT

        Look at the upper surface of the steering wheel, steering spoke and SRS airbag line to find the center position

        Fig 2: Identifying Line On Masking Tape
        G05753017Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      5. Draw a new line on the masking tape on the steering wheel as shown in the illustration
      6. Measure the distance between the 2 lines on the masking tape on the steering wheel.
      7. Convert the measured distance to steering angle

        HINT

        • Measured distance 1 mm (0 0394 in) = Steering angle of approximately 1 degree.
        • Make a note of the steering angle.
          Fig 3: Identifying Line On Masking Tape On Steering Wheel
          G05753018Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Adjust steering angle
      Fig 4: Identifying Line On Tie Rod Ends And Rack Ends
      G05297408Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Draw a line on the RH and LH tie rod ends and rack ends respectively where it can be easily seen
      2. Using a paper gauge, measure the distance from the RH and LH tie rod ends to the rack end screws

        HINT.

        • Measure both the RH and LH sides
        • Make a note of the measured values.
      3. Remove the RH and LH boot clips from the rack boots
        Fig 5: Locating Lock Nut And Boot Clip
        G05297409Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      4. Loosen the RH and LH lock nuts
      5. Turn the RH and LH rack ends by the same amount (but in different directions) according to the steering angle.

        HINT.

        One 360 degree turn of rack end (1 5 mm (0 0591 in) horizontal movement) equals to 12 degrees of steering angle.

      6. Tighten the RH and LH lock nuts to the specified torque.

        Torque: 56 N*m (570 kgf*cm, 41 ft.*lbf) 

        NOTE: Make sure that the difference in length between the RH and LH tie rod ends and rack end screws is within 1.5 mm (0.0591 in.).
      7. Install the RH and LH boot clips.
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