2005 f150 xlt 5.4l auto headights no longer turn on at night. What causes and how to fix? Someone said the little black bubble on dash next to windshield is sensor and sometimes gets dirty from cleaning dash but mines been cleaned and still nothing.

 

Switch ?

 

Everything else on switch works. When turned to auto my parking lights do turn on just not my headlights.

 

So... the running lights come on when in auto ?? just not the head lights ?? are they stock head lights.. ?? have you wired anything lately ?? do the head lights work in manual ??

 

Stock headlights. No wiring done. And still work in manual.

 

I would try a new switch

 

I have the somewhat the same issue, except when the switch is set to auto, my headlights are always on. Ford recommended checking fuses

 

Any idea of a fuse number?

 

F36 is what they told me

 

F36 is actually for the trailer stop and turn signal. Would driving running lights (DRL) be a cause for this? It makes sence auto lights and DRL kinda same thing right?