2007 Lexus LS 460LFACTORY OEM SERVICE PROCEDURE

Knock Sensor: Removal

  1. REMOVE INTAKE MANIFOLD 
    1. Remove the intake manifold (see REMOVAL )
  2. REMOVE ENGINE COVER SUB-ASSEMBLY  (See REMOVAL )
  3. REMOVE NO. 4 FUEL PIPE SUB-ASSEMBLY  (See REMOVAL )
  4. REMOVE SEPARATOR CASE 
    1. Disconnect the fuel pressure sensor connector.
      Fig 1: Locating Fuel Pressure Sensor Connector
      G04943089Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Remove the 4 bolts and separator case.
      Fig 2: Locating Separator Case Bolts
      G04943090Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  5. REMOVE KNOCK SENSOR 
    1. Disconnect the 4 knock sensor connectors.
    2. Remove the 4 bolts and 4 knock sensors.
      Fig 3: Locating Knock Sensor Connectors Bolts
      G04943091Courtesy 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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