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Horn Button ASSY: Disposal

WARNING: This page is about a different car, the 2005 Toyota Sienna. However, it is still accessible from the selected car via links, so may be relevant.

HINT:

When scrapping a vehicle equipped with the SRS or disposing of a horn button assy, 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 the horn button assy that has an undeployed airbag.
  • The airbag produces a sizeable exploding sound when it is deployed. So perform the operation out-of-doors and where it will not create a nuisance to nearby residents.
    Fig 1: Identifying SST
    G02610049Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  • 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 horn button assy.
  • The horn button assy is extremely hot when the airbag is deployed, so leave it alone for at least 30 minutes after deployment.
  • Use gloves and safety glasses when handling the horn button assy with the deployed airbag.
  • Do not apply water, etc. to the horn button assy with the deployed airbag.
  • Always wash your hands with water after completing the operation.
  1. DISPOSE OF HORN BUTTON ASSY (WHEN SCRAPPING VEHICLE DEPLOYMENT METHOD) 

    HINT:

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

    Fig 2: Connecting SST To Battery
    G02610050Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Check the function of the SST.
      CAUTION: When deploying the airbag, always use the specified SST: SRS Airbag Deployment Tool.

      SST 09082-00700

      Fig 3: Identifying SST
      G02610051Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Connect the SST to the battery.

        Connect the red clip of the SST to the battery positive (+) terminal and the black clip of the SST to the battery negative (-) terminal.

        HINT:

        Do not connect the yellow connector of the SST which is to be connected with the supplemental restraint system.

        Fig 4: Connecting SST To Battery
        G02610052Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      2. Check the function of the SST.

        Press the SST activation switch, and check that the LED of the SST activation switch comes on.

        CAUTION: If the LED illuminates when the activation switch is not being pressed, SST malfunction is probable, so definitely do not use the SST.
      3. Disconnect the SST from the battery.
      Fig 5: Pressing SST Activation Switch
      G02610053Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Install the SST.
      CAUTION: Check that there is no looseness in the steering wheel and horn button assy.
      1. While turning the steering wheel right / left, remove the 2 screws and column lower cover.
      2. Disconnect the airbag connector of the spiral cable sub-assy.
        Fig 6: Disconnecting Airbag Connector Of Spiral Cable Sub-Assy
        G02610054Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      3. Connect the connectors of the SST to the airbag connector of the spiral cable sub-assy.

        SST 09082-00700,09082-00780

        Fig 7: Connecting Connectors Of SST To Airbag Connector Of Spiral Cable Sub-Assy
        G02610055Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      4. Move the SST at least 10 m (33 ft) away from the front of the vehicle.
      5. Close all the doors and windows of the vehicle.
        NOTE: Take care not to damage the SST wire harness.
      6. Connect the red clip of the SST to the battery positive (+) terminal and the black clip of the SST to the negative (-) terminal.
      Fig 8: Moving SST From Front Of Vehicle
      G02610056Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Deploy the airbag.
      1. Confirm that no one is inside the vehicle or within 10 m (33 ft) area around the vehicle.
      2. Press the activation switch of the SST and deploy the airbag.

      HINT:

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

    4. Dispose of the horn button assy (with airbag).
    CAUTION:
    • The horn button assy is extremely hot when the airbag is deployed, so leave it alone for at least 30 minutes after deployment.
    • When moving a vehicle which has a horn button assy with deployed airbag for scrapping, use gloves and safety glasses.
    • Use gloves and safety glasses when handling the horn button assy with the deployed airbag.
    • Always wash your hands with water after completing the operation.
    • Do not apply water, etc. to the horn button assy with the deployed airbag.

    HINT:

    When scrapping a vehicle, deploy the airbag and scrap the vehicle with the horn button assy still installed.

  2. DISPOSE OF HORN BUTTON ASSY (WHEN DISPOSING OF AIRBAG ASSEMBLY DEPLOYMENT METHOD) 
    NOTE:
    • When disposing of the horn button assy (with airbag) only, never use the customer's vehicle to deploy the airbag.
    • Be sure to follow the procedure given below when deploying the airbag.
    Fig 9: Connecting SST To Battery
    G02610057Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    HINT:

    Have a battery ready as the power source to deploy the airbag.

    1. Check the function of the SST (see step 1 - ( a)).
    2. Remove the horn button assy (See REPLACEMENT ).
      CAUTION:
      • When removing the horn button assy, work must be started 90 seconds after the ignition switch is turned to the "LOCK" position and the negative (-) terminal cable is disconnected from the battery.
      • When storing the horn button assy, keep the upper surface of the pad facing upward.
    3. Using a service-purpose wire harness for the vehicle, tie down the horn button assy to the disc wheel.

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

      CAUTION: If a wire harness which is too thin or some other thing is used to tie down the horn button assy, it may be snapped by the shock when the airbag is deployed. This is highly dangerous. Always use a wire harness for vehicle use which is at least 1.25 mm 2 (0.0019 in2 ).
      Fig 10: Identifying Stripped Wire Harness Section
      G02610058Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      HINT:

      To calculate the square of the stripped wire harness section:

      Square = 3.14 x (Diameter) 2  divided by 4 

      1. Install the 2 bolts with washers in the 2 bolt holes in the horn button assy.

        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 the bolts become difficult to turn.
        • Do not tighten the bolts excessively.
        Fig 11: Installing Bolts
        G02610059Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      2. After connecting the SST below each other, connect them to the horn button assy.

        SST 09082-00802 (09082-10801,09082-30801)

        Fig 12: Connecting SST To Horn Button Assy
        G02610060Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      3. Using 3 wire harness, wind the wire harness at least 2 times each around the bolts installed on the left and right sides of the horn button assy.
        CAUTION:
        • Tightly wind the wire harness around the bolts so that there is no slack.
        • If there is slack in the wire harness, the horn button assy may become loose due to the shock when the airbag is deployed. This is highly dangerous.
        Fig 13: Winding Wire Harness Around Bolts
        G02610061Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      4. Face the upper surface of the horn button assy upward. Separately tie the left and right sides of the horn button assy to the disc wheel through the hub nut holes. Position the SST connector so that it hangs downward through a hub hole in the disc wheel.
      Fig 14: Positioning SST Connector
      G02610062Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      CAUTION:
      • Make sure that the wire harness is tight. It is highly dangerous when looseness in the wire harness results in the horn button assy coming free due to the shock from the airbag deployment.
      • Always tie down the horn button assy with the pad side facing upward. It is highly dangerous if the horn button assy is tied down with the metal surface facing upward as the wire harness will be cut by the shock caused by the airbag deployment and the horn button assy will be thrown into the air.
      NOTE: The disc wheel will be marked by airbag deployment, so use a redundant disc wheel.
    4. Install the SST.
      CAUTION: Place the disc wheel on the level ground.
      1. Connect the connector of the SST.

        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 15: Connecting Connector Of SST
        G02610063Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      2. Move the SST to at least 10 m (33 ft) away from the horn button assy tied down on the disc wheel.
      Fig 16: Moving SST From Horn Button Assy Tied Down On Disc Wheel
      G02610064Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    5. Cover the horn button assy with a cardboard box or tires.
      • Covering method using a cardboard box:

        Cover the horn button assy with the cardboard box and weight the cardboard box down in 4 places with at least 190 N (20 kg, 44 lb).

        Size of cardboard box: 

        Must exceed the following dimensions: 

        X = 460 mm (18.11 in.) 

        Y = 650 mm (25.59 in.) 

        Fig 17: Covering Horn Button Assy With Cardboard Box
        G02610065Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        NOTE:
        • When the dimension Y of the cardboard box exceeds the diameter of the disc wheel with tire to which the horn button assy is tied, X should be the following size.

          X = 460 mm (18.11 in.) + width of tire

        • If a cardboard box smaller than the specified size is used, the cardboard box will be broken by the shock from the airbag deployment.
        Fig 18: Identifying Covering Method Using Tires
        G02610066Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      • Covering method using tires:

      Place at least 3 tires with no disc wheels on top of the tire with disc wheel to which the horn button assy is tied.

      Tire size: Must exceed the following dimensions 

      Width: 185 mm (7.28 in.) 

      Inner diameter: 360 mm (14.17 in.) 

      CAUTION: Do not use tires with disc wheels.
      NOTE:
      • The tires may be marked by the airbag deployment, so use the redundant tires.
      • Do not place the SST connector under the tire because the SST connector could be damaged.
    6. Deploy the airbag.
      1. Connect the red clip of the 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 10 m (33 ft) area around the disc wheel to which the horn button assy is tied.
      3. Press the activation switch of the SST and deploy the airbag.

      HINT:

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

      Fig 19: Deploying Airbag
      G02610067Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    7. Dispose of the horn button assy (with airbag).
    CAUTION:
    • The horn button assy is extremely hot when the airbag is deployed, so leave it alone for at least 30 minutes after deployment.
    • Use gloves and safety glasses when handling the horn button assy with the deployed airbag.
    • Do not apply water, etc. to the horn button assy with the deployed airbag.
    • Always wash your hands with water after completing the operation.
    1. Remove the horn button assy from the disc wheel.
    2. Place the horn button assy in a plastic bag, tie the end tightly and dispose of it as the other general parts disposal.
    Fig 20: Placing Horn Button Assy In Plastic Bag
    G02610068Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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