LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Kia >> 2016 >> Optima EX >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 36 (Engine Control System (HEV)) >> Engine Coolant Temperature Sensor (ECTS) >> Repair Procedures >> Removal
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Repair Procedures: Removal

WARNING: This page is about a different variant/trim than selected.
  1. Turn the ignition switch OFF and disconnect the battery negative (-) terminal.
  2. Disconnect the engine coolant temperature sensor connector (A).
    Fig 1: Locating Engine Coolant Temperature Sensor Connector
    G11815747Courtesy of KIA MOTORS AMERICA, INC.
  3. Remove the fixing clip (A), and then pull the sensor from the water temperature control assembly.
Fig 2: Locating Engine Coolant Temperature Sensor Fixing Clip
G11815748Courtesy of KIA MOTORS AMERICA, INC.
CAUTION: Note that engine coolant may be flowed out from the water temperature control assembly when removing the sensor.