Repair procedures: Removal

Turn the ignition switch OFF and disconnect the battery negative (-) cable.
Remove the air cleaner assembly (Refer to "INTAKE AND EXHAUST SYSTEM " ).
Disconnect the engine coolant temperature sensor connector (A).
Remove the spring clip (B), and then pull the sensor from the water temperature control assembly.
CAUTION:
- Note that engine coolant may be flowed out from the water temperature control assembly when removing the sensor.
  
  Fig 1: Engine Coolant Temperature Sensor Component Location And Connector
  Courtesy of KIA MOTORS AMERICA, INC.
Supplement the engine coolant (Refer to "COOLING SYSTEM " ).