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/installing the headlamp assembly can result in damage to the vehicle.
Information
After heavy driving, rain or washing, headlamp and trunk lenses could appear frosty. This condition is caused by the temperature difference between the lamp inside and the outside temperature. This is similar to the condensation on your windows inside your vehicle during the rain and doesn’t indicate a problem with your vehicle. If the water leaks into the lamp bulb circuitry, have your vehicle checked by an authorized HYUNDAI dealer.
WARNING
Absorbent
This vehicle contains a dehumidifying dehumidifier inside the headlamp to mitigate the blurring of the headlamp due to moisture.
The desiccant is a consumable part and its performance may change depending on the usage time or environment.
If the inside of the headlamp continues to become cloudy due to moisture, we recommend that you consult an authorized HYUNDAI dealer.
The desiccant is a consumable part and cannot be guaranteed.
Hyundai Sonata LF 2014-2019 Owners Manual: Air Cleaner
Filter Replacement
The air cleaner filter can be cleaned for inspection using compressed air. Do
not attempt to wash or to rinse it, as water will damage the filter. If soiled,
the air cleaner filter must be replaced.
1. Remove the air cleaner filter cover.
2. Wipe the inside of the air cleaner. ...
Hyundai Sonata LF 2014-2019 Owners Manual: 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 engine is running. The adaptive
front lighting system will operate when the headlamps are ON. To t ...