The DRL's use the same lights. If they work normally any other time, I'm guessing that the relay could have gone bad. Most people disable the DRL anyway by unplugging the wiring from the relay. You can get to it by opening the little hatch at the left end of the dash. You can open the driver side door to see it. When I disabled mine, I removed that hatch and reached up from the underside of the dash to unplug the wires. I believe that there are a couple of relays there but I cannot remember what is what. You may just take a peek and see if anything is unplugged which I think is unlikely with how those connectors work.
