2008 Lexus ES 350FACTORY OEM SERVICE PROCEDURE

Knock Sensor: Installation

  1. INSTALL KNOCK CONTROL SENSOR 
    1. Install the 2 knock control sensors with the 2 bolts as shown in the illustration.

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

      Fig 1: Locating Knock Control Sensors With Bolts
      G04973906Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Connect the 2 knock control sensor connectors.
  2. INSTALL INTAKE MANIFOLD  (See INSTALLATION )
  3. CONNECT FUEL TUBE SUB-ASSEMBLY  (See INSTALLATION )
  4. INSTALL INTAKE AIR SURGE TANK  (See INSTALLATION )
  5. INSTALL NO. 1 AIR CLEANER INLET  (See INSTALLATION )
  6. INSTALL AIR CLEANER CASE SUB-ASSEMBLY  (See INSTALLATION )
  7. INSTALL AIR CLEANER CAP SUB-ASSEMBLY (See  INSTALLATION   ) 
  8. INSTALL AIR CLEANER INLET ASSEMBLY  (See INSTALLATION )
  9. ADD ENGINE COOLANT  (See Drain or Add coolant under ON-VEHICLE INSPECTION )
  10. CHECK FOR ENGINE COOLANT LEAKS  (See ON-VEHICLE INSPECTION )
  11. CHECK FOR FUEL LEAKS  (See ON-VEHICLE INSPECTION )
  12. INSTALL FRONT SUSPENSION UPPER CENTER BRACE  (See INSTALLATION )
  13. INSTALL V-BANK COVER SUB-ASSEMBLY  (See INSTALLATION )
  14. INSTALL ENGINE ROOM SIDE COVER LH  (See INSTALLATION )
  15. INSTALL ENGINE ROOM SIDE COVER RH  (See INSTALLATION )
  16. INSTALL COOL AIR INTAKE DUCT SEAL  (See INSTALLATION )
  17. INSTALL ENGINE UNDER COVER RH 
  18. INSTALL ENGINE UNDER COVER LH 
Factory Service Tools

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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.