2007 Lexus LS 460LFACTORY OEM SERVICE PROCEDURE

Suspension Control System: Precaution

  1. WHEN USING JACK OR LIFT 
    1. When work is performed under the vehicle or when jacking the vehicle up, make sure to turn the engine switch off.
    2. If the vehicle must be raised with its engine running, connect terminals 11 (OPA) and 4 (CG) of the DLC3 to stop the vehicle height control operation of the suspension control ECU.
      Fig 1: Identifying DLC3 Connector Terminals
      G04944086Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. WHEN ADDING AIR 
    NOTE:
    • Only operate the height control compressor to add air for less than 3 minutes. In order to protect the height control compressor, if it is operated for 3 minutes continuously, its operation is prohibited for 10 minutes.
    • If the height control compressor is operated continuously, its operation is automatically stopped after 3 minutes and its operation is prohibited for 10 minutes to protect the height control compressor.
  3. DISCONNECT AND CONNECT HEIGHT CONTROL TUBE (Type 1) 
    NOTE:
    • Disconnecting and connecting the height control tube should be performed by hand to prevent dust or foreign objects from entering it.
    • Be careful not to damage the height control tube.
    1. Disconnect the height control tube.
      1. for Except Front Pneumatic Cylinder:

        Pinch "A" to disconnect the No. 1 connector and pull it out from the housing.

        Fig 2: Disconnecting Height Control Tube (For Except Front Pneumatic Cylinder)
        G04944087Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      2. for Front Pneumatic Cylinder:

        Pinch "B" to disconnect the holder air connector clip and pull it out from the No. 1 connector.

        Pinch "C" to disconnect the No. 1 connector and pull it out from the housing.

        Fig 3: Disconnecting Height Control Tube (For Front Pneumatic Cylinder)
        G04944088Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      3. Set SST to the tube.
        Fig 4: Setting SST To Tube
        G04944089Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

        SST 09730-00010 

      4. Insert SST into the housing to expand the claw of the plug or tube connector in the housing.
        Fig 5: Inserting SST Into Housing
        G04944090Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      5. Pull out the tube with SST inserted.
        NOTE: Do not force the tube.
      6. Insert a screwdriver into the circular hole on the housing, and remove the No. 2 connector, 2 O-rings and plate from the housing.

        HINT:

        The O-rings, plate and No. 2 connector are non-reusable parts.

    2. Install 2 new O-rings and a new plate.
      NOTE: When replacing the parts onto which the tube is to be installed with new ones, it is not necessary to perform this installation procedure.
      1. Apply MP grease to 2 new O-rings and a new plate, and then install them to a straight tube.
        Fig 6: Identifying Plate And O-Rings
        G04944091Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

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