Heating, Ventilation, and Air Conditioning

Auto Defogging Sensor

4steps
~24min
2/5difficulty
Done 0 of 4

Description and Operation

Description

The auto defogger sensor is installed on the windshield. The sensor detects moisture and sends a signal when it appears, so that air is blown to prevent fogging. The A/C control module receives the signal from the sensor and controls humidity and eliminates fogging by controlling the intake actuator, A/C, auto defog actuator, blower motor speed, and mode actuator.

Repair Procedures

Replacement

  1. Disconnect the negative (-) battery terminal.

  2. Remove the auto defogger cover (A).

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

  4. To install, reverse the removal procedure.

Test yourself

A quick Kia Forte BD quiz: every answer comes with an explanation and a link to the manual page.