2008 Lexus LX 570FACTORY OEM SERVICE PROCEDURE

Knock Sensor: Installation

  1. INSTALL KNOCK SENSOR 
    1. Install the 4 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) 

      NOTE: The acceptable installation angle of the sensor is between 10° upward and downward from the horizontal position.
    2. Connect the 4 sensor connectors.
  2. INSTALL NO. 1 ENGINE COVER  (See INSTALLATION )
  3. INSTALL NO. 2 ENGINE COVER  (See INSTALLATION )
  4. INSTALL INTAKE MANIFOLD 
    1. Install the intake manifold (See INSTALLATION ).
    Fig 1: Locating Knock Sensor And Bolts
    G05628277Courtesy 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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