Hyundai Elantra: Auto Lighting Control System / Description and Operation

Hyundai Elantra AD (2016-2020) 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.

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 Elantra AD (2016-2020) Owners Manual: Side View Mirrors
Be sure to adjust mirror angles before driving. Your vehicle is equipped with both left-hand and right-hand side view mirrors. The mirrors can be adjusted remotely with the remote switch. The mirror heads can be folded to prevent damage during an automatic car wash or when passing through a ...

Hyundai Elantra AD (2016-2020) Service Manual: Master Cylinder Repair procedures
Removal 1. Turn ignition switch OFF and disconnect the negative (-) battery cable. 2. Remove the battery. (Refer to Engine Electrical System - "Battery") 3. Remove the ECM (A). 4. Loosen the mounting bolts (A) and then remova the ECM bracket (B). 5. Disconnect the brake fluid l ...