Hyundai Sonata: 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.
Schematic Diagrams
Circuit Diagram ...

Auto Light Sensor 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 (illuminati ...

Other information:

Hyundai Sonata LF 2014-2019 Service Manual: AVN Remote Controller (Sonata Sports) Components and Components Location
Components 1. Left remote control switch (Audio + Hands free)2. Right remote control switch (Cruise+Trip Computer)3. Paddle shift switch (Down)4. Paddle shift switch (Up) ...

Hyundai Sonata LF 2014-2019 Owners Manual: Light Bulbs
Consult an authorized HYUNDAI dealer to replace most vehicle light bulbs. It is difficult to replace vehicle light bulbs because other parts of the vehicle must be removed before you can get to the bulb. This is especially true for removing the headlamp assembly to get to the bulb(s). Removing/in ...

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