My 1998 Sienna XLE suddenly lost its low beams. The daytime running lights (DLR) also do not work. The high beams do work. This happened after I blew the cig lighter/power outlet fuse, which I replaced. I wonder it it was related?
I tried another -good- relay, with the same results.
Also replace the bulbs.
Could it be a problem with the photo sensor on the dash?
I could not find another relay (other than the one under the hood) to the headlights.