2009 Lexus LS 460L AWDFACTORY OEM SERVICE PROCEDURE

Knock Sensor: Installation

  1. INSTALL KNOCK SENSOR 
    1. Install the 4 knock sensors with the 4 bolts so that the sensors are angled as shown in the illustration.

      Torque: 20 N*m (204 kgf*cm, 15 ft.*lbf) 

      HINT:

      The acceptable installation angle of the sensors is between 10° upwards and downwards from the horizontal position.

    2. Connect the 4 knock sensor connectors.
    Fig 1: Locating Knock Sensors With Bolts
    G06190213Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. INSTALL SEPARATOR CASE 
    1. Install the separator case with the 4 bolts.

      Torque: 10 N*m (102 kgf*cm, 7 ft.*lbf) 

      Fig 2: Locating Separator Case With Bolts
      G06190214Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Connect the fuel pressure sensor connector.
    Fig 3: Identifying Fuel Pressure Sensor Connector
    G06190215Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. INSTALL NO. 4 FUEL PIPE SUB-ASSEMBLY  (See INSTALLATION )
  4. INSTALL NO. 2 ENGINE COVER SUB-ASSEMBLY LH  (See INSTALLATION )
  5. INSTALL NO. 2 ENGINE COVER SUB-ASSEMBLY  (See INSTALLATION )
  6. INSTALL NO. 1 ENGINE COVER SUB-ASSEMBLY  (See INSTALLATION )
  7. INSTALL INTAKE MANIFOLD 
    1. Install the intake manifold (See INSTALLATION ).
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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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