Hello! I just found out I have no brake lights. None of them work but the side ones flash briefly upon pressing the brake pedal down but turn right off. All other lights work. I checked the brake fluid level, the fuse, and changed the brake light switch but the side ones still just flash and nothing from the top one at all. It seems I can't replace the bulbs because it's some LED system and id have to replace the entire light unit? Is this my only option left? I'm sorry I don't know much about cars