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Home › Kia › 2017 › Optima SX › Repair and Diagnosis › Engine Performance › Engine Control Systems › Engine Control System - 2.0L (Except HEV) › Engine Coolant Temperature Sensor (ECTS) › Repair Procedures › Removal

Repair Procedures: Removal

  1. Turn the ignition switch OFF and disconnect the battery negative (-) terminal.
  2. Remove the battery.

    (Refer to Engine Electrical System - "BATTERY ")

  3. Remove the air cleaner.

    (Refer to Engine Mechanical System - "AIR CLEANER ")

  4. Disconnect the engine coolant temperature sensor connector (A).
    Fig 1: Disconnecting Engine Coolant Temperature Sensor Connector
    G12145703Courtesy of KIA MOTORS AMERICA, INC.
  5. Remove the spring clip (A), and then pull the sensor from the water temperature control assembly.
    Fig 2: Removing Spring Clip
    G12145704Courtesy of KIA MOTORS AMERICA, INC.
    CAUTION: Note that engine coolant may be flowed out from the water temperature control assembly when removing the sensor.
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