Hyundai Sonata: Smart High Beam / Headlamp delay function

If the key is removed from the ignition switch or placed in the ACC position or the LOCK/OFF position with the headlamps ON, the headlamps (and/or parking lamps) remain on for about 5 minutes. However, if the driver’s door is opened and closed, the headlights are turned off after 15 seconds. However, with the engine off if the driver's door is opened and closed, the headlamps (and/or parking lamps) are turned off after 15 seconds.

The headlamps (and/or parking lamps) can be turned off by pressing the lock button on the remote key or smart key twice or turning the light switch to the OFF or AUTO position. However, if you turn the light switch to the AUTO position when it is dark outside, the headlamps will not be turned off.

You can activate or deactivate the Headlamp Delay function from the User Settings Mode (Light) on the LCD display.

NOTICE

If the driver gets out of the vehicle through other doors (except driver's door), the battery saver function does not operate and the headlamp delay function does not turn off automatically. Therefore, It causes the battery to be discharged. In this case, make sure to turn off the lamp before getting out of the vehicle.

Battery saver function
The purpose of this feature is to prevent the battery from being discharged. The system automatically turns off the parking lamp when the key is removed (remote key) or when the driver turns the eng ...

AFLS (Adaptive Front Lighting System) a.k.a. DBL (Dynamic Bending Light)
Adaptive front lighting system uses the steering angle and vehicle speed to help maximize your field of vision by swiveling and leveling the headlamp. Change the switch to the AUTO position when the ...

Other information:

Hyundai Sonata LF 2014-2019 Service Manual: Advanced Smart Cruise Control (ASCC) Unit-Radar Specifications
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Hyundai Sonata LF 2014-2019 Service Manual: Cooling Fan Components and Components Location
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