Hyundai Palisade (LX2): Auto Lighting Control System / Description and operation

Hyundai Palisade (LX2) 2020-2026 Service 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

    Repair procedures Inspection Check 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.

    Other information:

    Hyundai Palisade (LX2) 2020-2026 Service Manual: Schematic diagrams

    System Block Diagram Component Parts And Function Outline Component part Function Vehicle-speed sensor, ESP/ABS Control Module Converts vehicle speed to pulse. ECM Receives signals from sensor and control switches.

    Hyundai Palisade (LX2) 2020-2026 Service Manual: Troubleshooting

    Trouble Symptom Charts Trouble Symptom 1 Trouble Symptom 2 Trouble symptom Probable cause Remedy The set vehicle speed varies greatly upward or downward "Surging" (repeated alternating acceleration and deceleration) occurs after set

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