2005 Lexus RX 330 AWDFACTORY OEM SERVICE PROCEDURE

Knock Sensor (3MZ-FE): Replacement

  1. DISCHARGE FUEL SYSTEM PRESSURE (See  FUEL SYSTEM (3MZ-FE)  ) 
  2. DRAIN ENGINE COOLANT (See  ENGINE COOLANT (3MZ-FE)  ) 
  3. REMOVE FR WIPER ARM LH (See  WINDSHIELD WIPER MOTOR ASSY  ) 
  4. REMOVE FR WIPER ARM RH (See  WINDSHIELD WIPER MOTOR ASSY  ) 
  5. REMOVE FRONT FENDER TO COWL SIDE SEAL LH 
  6. REMOVE FRONT FENDER TO COWL SIDE SEAL RH 
  7. REMOVE COWL TOP VENTILATOR LOUVER SUB-ASSY (See  WINDSHIELD WIPER MOTOR ASSY  ) 
  8. REMOVE WINDSHIELD WIPER LINK ASSY (See  WINDSHIELD WIPER MOTOR ASSY  ) 
  9. REMOVE COWL TOP PANEL SUB-ASSY OUTER (See  REPLACEMENT  ) 
  10. REMOVE V-BANK COVER SUB-ASSY (See  REPLACEMENT  ) 
  11. REMOVE AIR CLEANER CAP SUB-ASSY (See  REPLACEMENT  ) 
  12. REMOVE EMISSION CONTROL VALVE SET (See  REPLACEMENT  ) 
  13. REMOVE INTAKE AIR SURGE TANK (See  REPLACEMENT  ) 
  14. REMOVE INTAKE MANIFOLD 
    1. Disconnect the fuel pipe No. 1.
      1. Remove the EFI fuel pipe clamp.
      2. Pinch the tube connector and then pull out the fuel pipe No. 1.
        Fig 1: Pinching Tube Connector And Pulling Out Fuel Pipe No. 1
        G03010615Courtesy 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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