The Daytime Running Lights on my '03 stopped working, and I need them back. I checked fuses and all the associated ones are good. Can anyone help me out with what to check or how to get them working please?

 

I'm not sure what caused your DRL to stop working but I have a link that shows you how to disable them.

www.fordf150.net/howto/drl.php

I know that's not what your looking for but the pics and diagrams on that page should help you track down what caused your DRL to stop working.

 

Your fuses should be good. There is no separate fuse for the DRL setup. If your headlights work, the fuse is good.

Have you checked the resistor in the left front fenderwell yet? Actually, that going bad would still have your lights on, but at full power. Possibly a bad relay under the dashboard lid. My setup doesn't use that, but that's about the only other piece to this that sticks out.