Engine Coolant Temperature Sensor (ECTS) EGR Cooler Tube

Turn the ignition switch OFF and disconnect the battery (-) terminal.
Remove the air cleaner assembly.
(Refer to Engine Mechanical System - "AIR CLEANER ")
Disconnect the engine coolant temperature sensor connector (A).
Remove the spring clip (B), and then pull the sensor from the water temperature control assembly.

Courtesy of KIA MOTORS AMERICA, INC.

NOTE: Note that engine coolant may flow out from the water temperature control assembly when removing the sensor.