Heating, Ventilation, and Air Conditioning
Auto Defog Sensor (FATC only)
In this manual: Heating, Ventilation, and Air Conditioning
4steps
~24min
2/5difficulty
Done 0 of 4
Description and Operation
Description
The auto defog sensor is installed on the windshield. The auto defog sensor detects moisture on the windshield. The A/C control unit receives the signal from the sensor and removes fogging by controlling the intake actuator, A/C, front fog lamp actuator, blower speed and mode actuator.

repair procedures
TEST
Press the MODE switch more than 4 times within 2 seconds; at the same time, hold the OFF button.
DISPLAY Malfunction Description 00 Normal 51 Communication failure with the defog sensor and incorrect input signal
* Refer to the Troubleshooting Guide for diagnosis.
REMOVAL AND INSTALLATION
Disconnect the battery ground cable.
Remove the anti-fog sensor cover (A).

Disconnect the connector (B) of the auto defog sensor, then remove the sensor (A).

Installation is the reverse of removal.
Test yourself
A quick Kia Stonic quiz: every answer comes with an explanation and a link to the manual page.
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