Repair Procedures: Removal

Turn the ignition switch OFF and disconnect the battery negative (-) cable.
Disconnect the engine coolant temperature sensor connector (A).

Fig 1: Disconnecting Engine Coolant Temperature Sensor Connector
Courtesy of HYUNDAI MOTOR AMERICA
Remove the spring clip (A), and then pull the sensor from the water temperature control assembly.

Fig 2: Removing Spring Clip
Courtesy of HYUNDAI MOTOR AMERICA

CAUTION: Note that engine coolant may be flowed out from the water temperature control assembly when removing the sensor.
Supplement the engine coolant.
(Refer to "ENGINE COOLING SYSTEM Cooling System" in EM procedure)