Hyundai Palisade: Heater / Auto Defogging Actuator

Hyundai Palisade (LX2) 2020-2023 Service Manual / Heating,Ventilation And Air Conditioning / Heater / Auto Defogging Actuator

Description and operation
The auto defogging sensor is installed on the front window glass. The sensor judges and sends signal if moisture occurs to blow out wind for defogging. 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.
Components and components location
Components Location

Hyundai Palisade. Components and components location

1. Auto defogging actuator

Repair procedures
Turn the ignition switch OFF.
Disconnect the auto defogging connector.
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.

Hyundai Palisade. Repair procedures

1. -
2. -
3. DEF (Close)
4. DEF (Open)
5. Sensor power (+5V)
6. Feedback signal
7. Sensor ground

Connect the auto defogging actuator connector.
Turn the ignition switch ON.
Check the voltage between terminals 5 and 4.
Hyundai Palisade. Repair procedures   
It will feedback the current position of the actuator to controls.
Door position
Voltage (V)
Error detecting
Defog ON (Open)
0.5 ± 0.15
Low voltage : 0.7V or less
Defog OFF (Close)
4.7 ± 0.15
High voltage : 4.9V or less

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.
Disconnect the negative (-) battery terminal.
Remove the main crash pad assembly.
(Refer to Body - "Main Crash Pad Assembly")
Press the lock pin and separate the connector (A) and loosen the mounting screws and remove the auto defogging actuator (B).

Hyundai Palisade. Repair procedures

Install in the reverse order of removal.

    Mode Control Actuator

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    Manual adjustment

    The front seat can be adjusted by using the levers located on the outside of the seat cushion. Before driving, adjust the seat to the proper position so that you can easily control the steering wheel, foot pedals and controls on the instrument panel.

    Hyundai Palisade. Manual adjustment

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