For the 2021-2022 Hyundai Elantra, the headlight configuration varies by trim level: lower trims typically use projector headlights with replaceable halogen bulbs (often H7 or H11), while higher trims feature integrated LED headlights that are not serviceable and require complete assembly replacement if they fail . The standard headlight assemblies themselves are model-specific, with options for either halogen or LED light sources depending on the vehicle's original factory equipment .