This indicator illuminates when the headlights are on and in the high beam position or when the turn signal lever is pulled into the Flash-to-Pass position.
Kia Cee'd JD Service Manual: Evaporator Temperature Sensor Repair procedures
Inspection
1.
Turn the ignition switch OFF.
2.
Disconnect the evaporator temperature sensor connector.
3.
Measure resistance between terminal “+” and “-” of the evaporator temperature
sensor. ...
Kia Cee'd JD Service Manual: Repair procedures
Replacement
1.
Loosen the wheel nuts slightly.
Raise the vehicle, and make sure it is securely supported.
2.
Remove the rear wheel and tire (A) from rear hub .
Tightening torque:
88.2 ~ ...