Kia Sportage: Air conditioning System / Auto Defogging Sensor (DATC only) Description and operation
Installed on the windshield glass, the auto defogging sensor judges and sends
signal to blow out wind for defogging if moisture occurs. On receiving the signal
from the sensor, the air conditioner control module restrains moisture and eliminates
fog by controlling the intake actuator, A/C, auto defogging actuator, blower
motor rpm, and mode actuator.

Inspection
1.
Turn the ignition switch OFF.
2.
Remove the front bumper.
(Refer to Body - "Front Bumper Cover")
...
Inspection
To inspect and diagnose the sensor, refer to Self-Diagnosis procedure and DTC
guide.
Replacement
1.
Disconnect the negative (-) bat ...
Other information:
Follow the Normal Maintenance Schedule if the vehicle is usually operated where
none of the following conditions apply. If any of the following conditions apply,
follow the Maintenance Under Severe Usage Conditions.
Repeated driving short distance of less than 5 miles (8 km) in normal
tem ...
Replacement
Do not apply sealant to the body.
1.
Remove the tailgate weatherstrip (A).
2.
Install in the reverse order of removal.
...