Well, we won't "bare" with you, but we will "bear" with you.
The light control module is sensitive to bulb quality. If you used Chinese bulbs, or those with brass-colored bases, that could be the problem. The bulb sockets could also be dirty or corroded. No need to reset.
BTW, what exact warning light came on? It may be pointing to another fault.
Ed in San Jose '97 540i 6 speed aspensilber over aubergine leather. Build date 3/97. Golden Gate Chapter BMW CCA Nr 62319.