Repair Procedures: Removal

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

Fig 1: Identifying 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: Identifying ECTS 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: "COOLANT " in EM procedure).