The light in the middle top portion of the instrument cluster is the general warning light indicating things such as open moonroof, open door, open glass hatch, low washer fluid..
This light indicates low tire pressure, or in my case no tire pressure sensors at all.
I know some cars have an indicator light that will come on if you have a burnt out light. I have never had a burnt out head/tail light (knock on wood) so I don't know what light would illuminate (if any) in this case. Maybe you should check your tail lights?