2003 Hyundai Sonata Owner's Manual - Page 178
2003 Hyundai Sonata Manual
Page 178 highlights
DO-IT-YOURSELF MAINTENANCE 6- 23 High Beam G270B01Y-AAT Front turn signal Light HEF-227 HEF-223 HEF-221 Low Beam 3. Replace to the new bulb. 1. Take off the headlight module to remove three bolts with a spanner. HEF-231 6. Replace to the new bulb. HEF-222 2. Disconnect the power code.