Heating, Ventilation, and Air Conditioning

Auto Defog Sensor (FATC only)

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

  1. 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

  1. Disconnect the battery ground cable.

  2. Remove the anti-fog sensor cover (A).

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

  4. 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.