I just fixed this problem , it was my daytime running light module
The switch is broken. You need to replace it.
there are two diff types of bulbs. High beam and low beam bulbs. If your low beam doesn't work then you need to replace those lights because they are probably blown.
"It's possible that you blew the low beam filaments. I blew my high beam filaments while charging the battery." --MM
It sounds like the low beam/high beam switch is bad. Fuses are not the problem since they are built into the headlight switch and would cause headlights to blink or not come on for both high and low beam headlights.
Headlights that serve as a high and low beam have two different filiments in them. The low beam filiment is most likely burnt out. Time to replace it.
The switch.
low beam
Change the globe or lamp. H4 type globes contain the high and low beam, so whilst low beam is working OK the high beam part is likely blown.
High beam headlights reveal objects at a distance of at least 450 feet away. High beam headlights allow the driver to view obstacles in the road much sooner than low beam headlights.
Check fuses and bulps.
If the headlights on a 1997 Ford F-150 work on low beam but not on high beam, the issue could be due to a faulty high beam relay, a burned-out bulb in the high beam circuit, or a problem with the wiring or connections specific to the high beam system. Additionally, a malfunctioning switch on the steering column could prevent the high beams from activating. It's advisable to check the bulbs, fuses, and relays to diagnose the problem effectively.
if you've tried hitting the high/low beam switch & headlights are out on both, then a bad headlight switch or headlight switch plug or high/low beam switch plug not fully engaged.