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Home >> Kia >> 2020 >> 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
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Repair Procedures: Removal

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

    (Refer to "BATTERY ")

  3. Remove the air cleaner.

    (Refer to "AIR CLEANER ")

  4. Disconnect the engine coolant temperature sensor connector (A).
    G12922285Courtesy of KIA MOTORS AMERICA, INC.
  5. Remove the spring clip (A), and then pull the sensor from the water temperature control assembly.
G12922286Courtesy of KIA MOTORS AMERICA, INC.
CAUTION: Note that engine coolant may be flowed out from the water temperature control assembly when removing the sensor.