Kia Optima DL3 Quiz
Heating, Ventilation, and Air Conditioning

Auto Defogging Sensor

In this manual: Heating, Ventilation, and Air Conditioning
General Information — 8Advanced Driver Assistance System (ADAS) — 21Maintenance — 27Engine Mechanical System — 45Engine Electrical System — 11Emission Control System — 11Engine Control System/Fuel System — 25Automatic Transmission — 20Drive Shaft and Axle — 7Suspension System — 22Steering — 7Restraints — 11Brake System — 22Body (Interior and Exterior) — 116Body Electrical System — 90Heating, Ventilation, and Air Conditioning — 32
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 inside rearview mirror cover (A), (B).

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

  4. To install, reverse the removal procedure.

Test yourself

A quick Kia Optima DL3 quiz: every answer comes with an explanation and a link to the manual page.