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Home >> Kia >> 2012 >> Optima LX, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 20 (Engine Control System - HEV) >> Knock Sensor (KS) >> Repair procedures >> Removal

Repair procedures: Removal

WARNING: This page is about a different variant/trim than selected.
  1. Turn the ignition switch OFF and disconnect the battery negative (-) cable.
  2. Drain the engine coolant (Refer to COOLANT "Cooling System" in EM group).
  3. Remove the radiator upper hose (Refer to RADIATOR "Cooling System" in EM group).
  4. Disconnect the knock sensor connector (A).
    Fig 1: Identifying Knock Sensor Connector
    G08312862Courtesy of KIA MOTORS AMERICA, INC.
  5. Remove the intake manifold (Refer to INTAKE MANIFOLD "Intake And Exhaust System" in EM group).
  6. Remove the installation bolt (A), and then remove the sensor from the cylinder block.
    Fig 2: Knock Sensor Connector Component Location And Mounting Bolt
    G08312863Courtesy of KIA MOTORS AMERICA, INC.
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