Hyundai Ioniq (AE): Auto Lighting Control System / Description and operation

Hyundai Ioniq (AE) 2017-2022 Service & Repair Manual / Body Electrical System / Auto Lighting Control System / Description and operation

Description
It's a system that uses illumination sensor to automatically turn ON the tail lamp and head lamp based on the change in surrounding environment's illumination condition. It activates when the vehicle enters/exits tunnel, or when the illumination condition in surrounding environment changes due to rain, snow, or fog. Precautions corresponding to the use of this system are as follows.
1.
Do not add another device on top of this device.
2.
Be sure to switch to manual during poor visibility climate, such as fog, heavy rain, or cloudy weather.
3.
Illumination intensity in an actual vehicle is not always constant, and lamp ON/OFF time may very depending on the climate, season, and surrounding environment.
4.
Use this system only during sunrise and sunset period, and manually control lamp ON/OFF for general conditions.
5.
Error may occur if light block coating that may change interior illumination is applied.

    Circuit Diagram

    InspectionCheck if the auto light control operates like a timing chart shown below. Tail lamp output and head lamp (Low) output is controlled based on the auto light sensor's input (illumination intensity) when the Auto Light Switch in Multi-Function Switch is turned ON, and the vehicle is in IGN1 or IGN2 ON Mode.

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    Hyundai Ioniq (AE) 2017-2022 Service & Repair Manual: Evaporator Temperature Sensor. Description and operation

    DescriptionThe evaporator temperature sensor will detect the evaporator core temperature and interrupt compressor relay power in order to prevent evaporator from freezing by excessive cooling. The evaporator temperature sensor has the Negative Temperature Coefficient (NTC).

    Hyundai Ioniq (AE) 2017-2022 Service & Repair Manual: Parking Distance Warning (PDW) Sensor. Repair procedures

    Removal1.Disconnect the negative (-) battery terminal.2.Remove the front / rear bumper cover.(Refer to Body - "Front Bumper Cover")(Refer to Body - "Rear Bumper Cover")3.Disconnect the connector (A) from the parking assist sensor.4.Remove the sensor (A) by pulling out both ends of the sensor holder.

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