Kia Optima: Air Conditioning System / Auto Defogging Sensor

Kia Optima DL3 2019-2021 Service and Repair Manual / Heating, Ventilation and Air Conditioning / Air Conditioning System / Auto Defogging Sensor

Description and operation
Description

The auto defogging sensor is installed on the front window glass. The sensor judges and sends signal if moisture occurs to blow out wind for defogging. The air conditioner control module receives signal from the sensor and restrains moisture and eliminate defog by controlling the intake actuator, A/C, auto defogging actuator, blower motor rpm, and mode actuator.

Repair procedures
Replacement
1.

Disconnect the negative (-) battery terminal.

2.

Remove the inside rear view mirror cover (A),(B).

3.

Separate the auto defogging sensor connector (A) and remove the auto defogging sensor (B).

4.

To install, reverse the removal procedure.

  

Make sure connectors are connected properly.

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