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Hyundai Tucson: Auto defogging actuator

Hyundai Tucson - Fourth generation (NX4) - (2020-2023) - Workshop Manual / Heating, Ventilation and Air Conditioning (HVAC) / Heater / Auto defogging actuator

Components Location

  1. Auto defogging actuator

Inspection

  1. Turn the ignition switch OFF.
  2. Disconnect the auto defogging connector.
  3. Verify that the auto defogging actuator operates to the open position when connecting 12V to terminal 3 and grounding terminal 6

Verify that the auto defogging actuator operates to the close position when connected in reverse.

  1. -
  2. -
  3. DEF (Close)
  4. DEF (Open)
  5. Sensor (+ 5V)
  6. Feedback signal
  7. Sensoer ground
  1. Connect the auto defogging actuator connector.
  2. Turn the ignition switch ON.
  3. Check the voltage between terminals 5 and 4.

* 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 is not within specification, check the operation by replacing the existing auto defogging actuator with a new genuine part. After that, determine whether replacement of the auto defogging actuator is required or not.
  2. Replace the auto defogging actuator if it is proved that there is a problem with it.

Replacement

  1. Disconnect the negative (-) battery terminal.
  2. Remove the main crash pad assembly.

    (Refer to Body (Interior and Exterior) - "Main Crash Pad Assembly")

  3. Disconenct the connector (A) and loosen the mounting screws and remove the auto defogging actuator (B).

  1. Install in the reverse order of removal.

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