2015 honda civic; 50,000 miles. automatic headlights and manual headlights emit a sound from the engine, both right and left sides. in essince, when the headlites are on, the sound is on 100%. several individuals shared same issue on the honda forum and shared several possible causes. one of which was small cracks in the soder within the module. my concern is when the cracks separate, the headlights will stop working.