2018 Hyundai Sonata headlight fitment varies by equipment. The low-beam and high-beam applications may use integrated LED lighting or 9005 bulbs, so confirm whether the vehicle has LED or bulb-type headlamp assemblies before ordering.
- Headlights: Low beam: LED or 9005. High beam: LED or 9005.
- Rear lighting: Vehicles with halogen headlights use 2357R bulbs for the brake and tail lights. Vehicles with LED headlights use LED assemblies for these functions.
- Front lighting: The front turn signal uses a 2357A bulb. Parking lights use 2357A with halogen headlights or LED with LED headlights. The front side marker uses 168NA.
- Other exterior bulbs: The rear turn signal uses 1156A, reverse lights use 921, and the center stop light and daytime running lights are LED.
- Interior: Dome, map, and trunk lights use DE3175; the vanity light uses 6418. License plate lighting may use 168 or 917.
Match replacement parts to the installed lighting configuration, especially when switching between halogen and LED headlight versions.