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: System Maintenance
Climate control air filter
This filter is installed behind the glove box. It filters the dust or other pollutants
that enter the vehicle through the heating and air conditioning system.
Have the climate control air filter replaced by an authorized HYUNDAI dealer
according to the maintenance sched ...
Hyundai Sonata LF 2014-2019 Service Manual: Components and Components Location
Components
[Manual Seat Type]
1. Front seat headrest2. Front seat headrest guide3. Front seat back board4. Front seat back frame assembly5. Front seat back pad6. Front seat back heater7. Front seat cushion frame assembly8. Front seat shield cushion pad9. Front seat cushion heater mat10. Heig ...