Auto Defogging Sensor

Description and Operation

Description

The auto defogging sensor is installed on the windshield. The sensor detects moisture and sends a signal when moisture appears, so that air is blown to prevent fogging. The A/C control unit receives the signal from the sensor and removes moisture and fogging by controlling the intake actuator, the A/C compressor, the auto defogging actuator, the blower motor speed, and the mode actuator.

Repair Procedures

Inspection

To inspect and diagnose the sensor, refer to the self-diagnosis procedure and DTC guide.

Replacement

When removing with a flat-blade screwdriver or puller, wrap the tool with protective tape to prevent damage to the components. Wear gloves to avoid cutting your hands.

1. 1
   Disconnect the negative (-) battery terminal.
2. 2
   Remove the rain sensor inner cover (A).

   

3. 3
   Remove the rain sensor cover (A).

   

4. 4
   Disconnect the auto defogging sensor connector (B) and remove the auto defogging sensor (A).

   

5. 5
   Install in the reverse order of removal.

   Be careful not to damage the windshield. Check that the hood latch release cable is connected properly.