KIA Niro: Auto Defogging Actuator


Installed on the windshield glass, the auto defogging sensor detects humidity to blow out wind for defogging to improve visibility and driver comfort. The air conditioner control module receives a signal from the sensor and restrains moisture and eliminates defog by the intake actuator, A/C, auto defogging actuator, blower motor rpm and mode actuator.


  1. Switch "OFF" the ignition.
  2. Disconnect the auto defogging sensor connector.
  3. Connect the power (+) terminal to mode actuator connector terminal 3, and ground the negative (-) terminal to terminal 7. Then, inspect that the motor is operated in defrost mode. Reverse the connections to see that it operates in reverse.
  4. Connect the auto defogging actuator sensor connector.
  5. Switch "ON" the ignition.
  6. Check the voltage between terminals 4 and 5.

  1. -
  2. -
  3. OPEN (CW)
  4. SENSOR REF (+5V)
  5. Actuator Feed back
  6. Sensor Ground
  7. Close (CCW)


It will feedback the current position of the actuator to controls.

It will feedback the current position of the actuator to controls.

  1. If the measured voltage does not satisfy the specifications, replace with a genuine auto defogging actuator.
  2. Replace the auto defogging actuator if it is proved that there is a problem with it.


  1. Disconnect the negative (-) battery terminal.
  2. Remove the glove box housing.

    (Refer to Body - "Glove Box Housing".)

  3. Loosen the mounting screw and remove the passenger seat shower duct (A).

  1. Disconnect the connector and then remove the auto defogging actuator (A) after loosening the screws.

  1. Install in the reverse order of removal.


In ordinary cars, the mechanical water pump mounted on the engine for heating purposes is activated to circulate the cooling water, but in hybrid cars, AWEP is used to circulate the cooling water when the engine is not operating.


  1. Remove the battery (-) terminal.
  2. Remove the engine room under cover.

    (Refer to Engine Mechanical System - "Engine Room Under Cover")

  3. Remove the heater hose (A) and AEWP hose (B).

  1. Disconnect the lock pin to remove the heater hose pump connector (A).

  1. Loosen the mounting bolts and remove the AEWP (A).

Tightening torque : 18.6 - 21.6 N.m (1.9 - 2.2 kgf.m, 13.7 - 15.9 Ib-ft)



  1. Install in the reverse order of removal.


  • Be careful not to damage other hoses nearby when tightening the clamp.
  • Install the clamp in the specified direction to prevent interference with surrounding components.
  • The cooling system should be refilled with the coolant after replacing the AEWP.

    (Refer to Engine Mechanical System - "Coolant ")

  • After installing, check for leakage of coolant or fluid from hose connection during engine start.


     Emergency Rescue Guide

     Emergency Rescue Guide - Introduction/ Identification

    Emergency Rescue Guide - Introduction Document Purpose The purpose of this document is to familiarize first responders and the towing/roadside assistance industry with the proper methods to handle the Niro PHEV in an emergency situation. This gu

     Main Electronic Systems


     AC inverter

    Type A Type B The AC inverter supplies 220V/200W or 115V/150W electric power to operate electric accessories or equipment. If you wish to use the AC inverter, open up the AC inverter cover and connect a plug to it. The AC inverter supplies

     Limitations of Navigation-based Smart Cruise Control

    Navigation-based Smart Cruise Control may not operate properly under the following circumstances: The navigation is not working properly Speed limit and road information in the navigation is not updated Map information is not transmitted