Hyundai Elantra service light activation upon headlight use and recurring tail light issues on Hyundai Elantra

Some Hyundai Elantra owners report experiencing issues with the headlight warning light being triggered, even when all lights appear to be functioning properly, due to subtle problems like variations in bulb resistance or minor wiring issues. Additionally, recurring tail light problems are noted, which can activate warning lights or service indicators if not all lights are operating correctly. Owners also mention needing to reset the headlight warning light by starting the car's electrical systems without the engine running and following the owner's manual instructions. Furthermore, some find that the service light can be reset by accessing the on-board computer menu through the steering wheel buttons, but neglecting to reset the "SERVICE REQUIRED" light after servicing can lead to unnecessary triggers. It is important for owners to follow the reset procedures for maintenance indicators to avoid these issues.