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Home >> Lexus >> 2007 >> LS 460L >> Repair and Diagnosis >> Restraints >> Air Bag, SRS >> Supplemental Restraint System >> Steering Pad >> Disposal

Steering Pad: Disposal

HINT:

When scrapping a vehicle equipped with the SRS or disposing of the steering pad, be sure to deploy the airbag first in accordance with the procedure described below. If any abnormality occurs with the airbag deployment, contact the SERVICE DEPT. of TOYOTA MOTOR SALES, U.S.A., INC.

CAUTION:
  • Never dispose of a steering pad that has an unactivated airbag.
  • The airbag produces an exploding sound when it is deployed, so perform the operation outdoors and where it will not create a nuisance to nearby residents.
  • When deploying the airbag, always use the specified SST (SRS Airbag Deployment Tool). Perform the operation in a place away from electrical noise.
  • When deploying the airbag, perform the operation at least 10 m (33 ft.) away from the steering pad.
  • The steering pad becomes extremely hot when the airbag is deployed, so do not touch it for at least 30 minutes after deployment.
  • Use gloves and safety glasses when handling a steering pad with a deployed airbag.
  • Do not apply water, etc. to a steering pad with a deployed airbag.
  • Always wash your hands with water after completing the operation.
  • An airbag or pretensioner may be activated by static electricity. To prevent this, be sure to touch a metal surface with bare hands to discharge static electricity before performing this procedure.
  1. DISPOSE OF STEERING PAD (WHEN INSTALLED IN VEHICLE) 

    HINT:

    Prepare a battery as the power source to deploy the airbag.

    1. Check the function of SST.

      SST 09082-00700 

      CAUTION: When deploying the airbag, always use the specified SST (SRS Airbag Deployment Tool).
      Fig 1: Identifying SRS Airbag Deployment Tool
      G04951155Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Connect SST to the battery. Connect the red clip of SST to the battery positive (+) terminal and the black clip of SST to the battery negative (-) terminal.
        Fig 2: Locating SST To Battery
        G04951156Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      2. Check the function of SST. Press the SST activation switch, and check that the LED of the SST activation switch comes on.
        CAUTION:
        • Do not connect the SST connector (yellow colored) to the airbag.
        • If the LED comes on when the activation switch is not being pressed, SST malfunction is possible, so replace the SST with a new one.
          • Fig 3: Locating SST Activation Switch
          G04951157Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      3. Disconnect SST from the battery.
    2. Read the precaution (see SYSTEM DIAGRAM  ).
    3. Disconnect the cable from the negative (-) battery terminal.
      CAUTION: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to prevent airbag and seat belt pretensioner activation.
    4. Remove the steering column cover lower.
      1. While turning the steering wheel to the right and left, remove the 3 screws and steering column cover lower.
        Fig 4: Locating Steering Wheel To Right And Left
        G04951158Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    5. Install SST.
      CAUTION: Check that there is no looseness in the steering wheel assembly and steering pad.
      1. Disconnect the airbag connector (yellow colored) from the spiral cable with steering sensor.
        NOTE: When handling the airbag connector, take care not to damage the airbag wire harness.
        Fig 5: Locating SST Connector To Airbag Connector
        G04951159Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      2. Connect the SST connector to the airbag connector of the spiral cable with steering sensor.

        SST 09082-00780 

        NOTE: To avoid damaging the SST connector and wire harness, do not lock the secondary lock of the twin lock.
      3. Move SST at least 10 m (33 ft.) away from the vehicle front side window.
        4. Fig 6: Identifying Distance Between Vehicle And SST
        G04951160Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      4. Maintaining enough clearance for the SST wire harness in the front side window, close all doors and windows of the vehicle.
        NOTE: Take care not to damage the SST wire harness.
      5. Connect the red clip of SST to the battery positive (+) terminal and the black clip of SST to the negative (-) terminal.
    6. Deploy the airbag.
      1. Check that no one is inside the vehicle or within a 10 m (33 ft.) radius of the vehicle.
      2. Press the SST activation switch and deploy the airbag.
        Fig 7: Identifying Steering Pad In Plastic Bag
        G04951161Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        CAUTION:
        • When deploying the airbag, make sure that no one is near the vehicle.
        • The steering pad becomes extremely hot when the airbag is deployed, so do not touch it for at least 30 minutes after deployment.
        • Use gloves and safety glasses when handling a steering pad with a deployed airbag.
        • Do not apply water to a steering pad with a deployed airbag.
        • Always wash your hands with water after completing the operation.

        HINT:

        The airbag is deployed as the LED of the SST activation switch comes on.

  2. DISPOSE OF STEERING PAD (WHEN NOT INSTALLED IN VEHICLE) 
    CAUTION: Be sure to follow the procedure detailed below when deploying the airbag.

    HINT:

    Prepare a battery as the power source to deploy the airbag.

    1. Check the function of SST (see REMOVAL ).
    2. Remove the steering pad (see REMOVAL  ).

      SST 09082-00700 

      Fig 8: Identifying SRS Airbag Deployment Tool
      G04951155Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      CAUTION:
      • When removing the steering pad, work must be started 90 seconds after the engine switch is turned off and the negative (-) terminal cable is disconnected from the battery.
      • When storing the steering pad, keep the airbag deployment side facing upward.
    3. Using a service-purpose wire harness for the vehicle, tie down the steering pad to the disc wheel.

      Wire harness: 

      Stripped wire harness section 1.25 mm 2  or more (0.0019 in. 2  or more) 

      Fig 9: Identifying Stripped Wire Harness Section
      G04951163Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      CAUTION: If the wire harness is too thin or an alternative object is used to tie down the steering pad, it may be snapped by the shock when the airbag is deployed. Always use a wire harness for vehicle use with an area of at least 1.25 mm2 (0.0019 in.2 ).

      HINT:

      To calculate the area of the stripped wire harness section: Area = 3.14 x (Diameter)2 divided by 4

      1. Install the 2 bolts with washers into the 2 bolt holes on the steering pad.

        Bolt: 

        L: 35.0 mm (1.378 in.) 

        M: 6.0 mm (0.236 in.) 

        Pitch: 1.0 mm (0.039 in.) 

        NOTE:
        • Tighten the bolts by hand until they become difficult to turn.
        • Do not tighten the bolts excessively.
        Fig 10: Identifying Bolts With Washers Into 2 Bolt Holes On Steering Pad
        G04951164Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      2. After connecting SST each other, connect them to the steering pad.

        SST 09082-00820 

        Fig 11: Locating SST To Steering Pad
        G04951165Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      3. Wind 3 wire harnesses at least 2 times each around the bolts installed on the left and right sides of the steering pad.
        CAUTION:
        • Tightly wind the wire harnesses around the bolts so that there is no slack.
        • Make sure that the wire harnesses are tight. If there is slack in the wire harnesses, the steering pad may become loose due to the shock when the airbag is deployed.
          Fig 12: Identifying Wire Harnesses Around Bolts
          G04951166Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      4. Face the airbag deployment side of the steering pad upward. Separately tie the left and right sides of the steering pad to the disc wheel through the hub nut holes. Position the SST connector so that it hangs downward through the hub hole of the disc wheel.
        Fig 13: Identifying Left And Right Sides Of Steering Pad To Disc Wheel
        G04951167Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        CAUTION:
        • Make sure that the wire harnesses are tight. If there is slack in the wire harnesses, the steering pad may become loose due to the shock when the airbag is deployed.
        • Always tie down the steering pad with the airbag deployment side facing upward.
        NOTE: As the disc wheel may be damaged by the airbag deployment, use a disc wheel that you are planning to throw away.
    4. Install SST.
      CAUTION: Place the disc wheel on level ground.
      1. Connect the SST connector.

        SST 09082-00700 

        NOTE: To avoid damaging the SST connector and wire harness, do not lock the secondary lock of the twin lock. Also, secure some slack for the SST wire harness inside the disc wheel.
        Fig 14: Identifying SST Connector
        G04951168Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      2. Move SST at least 10 m (33 ft.) away from the steering pad tied down to the disc wheel.
        Fig 15: Identifying Distance Between Steering Pad And SST
        G04951169Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    5. Cover the steering pad with a cardboard box or tires.
      1. Covering method using a cardboard box: Cover the steering pad with the cardboard box and place the weights on the cardboard box in 4 places with at least 190 N (19 kgf, 43 lbf). Cardboard box size:

        Must exceed the following dimensions X: 

        460 mm (18.11 in.) 

        Y: 

        650 mm (25.59 in.) 

        NOTE:
        • When the dimension Y of the cardboard box exceeds the diameter of the disc wheel with tire which the steering pad is tied to, X should be the following size. X = 460 mm (18.11 in.) + width of tire
        • If a cardboard box which is smaller than the specified size is used, the cardboard box will be broken by the shock from the airbag deployment.
          Fig 16: Identifying Steering Pad With Cardboard Box
          G04951170Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      2. Covering method using tires: Place at least 3 tires without disc wheels on the tire with disc wheel which the steering pad is tied to. Place the tire with disc wheel on them.

        Tire size: 

        Must exceed the following dimensions Tires 

        Width: 185 mm (7.28 in.) 

        Inner diameter: 360 mm (14.17 in.) 

        CAUTION: Do not use tires with disc wheels except on the top and bottom.
        NOTE:
        • As the tires may be damaged by the airbag deployment, use a tire that you are planning to throw away.
        • Do not place the SST connector under the tire because it could be damaged.
        Fig 17: Identifying Tires Without Disc Wheels On Tire With Disc Wheel Which Steering Pad
        G04951171Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      3. Tie the tires together with 2 wire harnesses.
        CAUTION: Make sure that the wire harnesses are tight. Looseness in the wire harnesses results in the tires coming free due to the shock when the airbag is deployed.
        Fig 18: Identifying Tires With Wire Harnesses
        G04951172Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    6. Deploy the airbag.
      1. Connect the red clip of SST to the battery positive (+) terminal and the black clip of the SST to the battery negative (-) terminal.
      2. Check that no one is within a 10 m (33 ft.) radius of the disc wheel which the steering pad is tied to.
      3. Press the SST activation switch and deploy the airbag.
        CAUTION: When deploying the airbag, make sure that no one is near the tire.

        HINT:

        The airbag is deployed as the LED of the SST activation switch comes on.

        Fig 19: Identifying Distance Between Steering Pad And SST
        G04951173Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    7. Dispose of the steering pad.
      CAUTION:
      • The steering pad becomes extremely hot when the airbag is deployed, so do not touch it for at least 30 minutes after deployment.
      • Use gloves and safety glasses when handling a steering pad with a deployed airbag.
      • Do not apply water to a steering pad with a deployed airbag.
      • Always wash your hands with water after completing the operation.
      1. Remove the steering pad from the disc wheel.
      2. Place the steering pad in a plastic bag, tie it tightly and dispose of it in the same way as other general parts.
        Fig 20: Identifying Steering Pad In Plastic Bag
        G04951161Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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