Happened to me when I had osrams in there, both low beams failed within minutes of each other.since the h4 bulbs use separate filaments, what i mean more specifically is that the low beam filaments in both bulbs may have failed, basically making the bulbs useless. i just don't understand how something like that could happen to both bulbs at once.
Use a multi-meter or a test light to determine if there is any current available at the connection. I'd not rely on SID screen notifications. These bulbs do not last; maybe they are good for a year.The main bulb works fine when the high beams are on though and there are no head light failure notifications on the screen.