I am experiencing this very same problem. I have a 2004 F150 Lar. 4x4 SCrew. My truck just started experiencing the problem in December of 2009. I believe it may be intermittent.

The problem:
With Auto Lamps set on, only the fog lights and parking lamps power on, no head lights. I can turn the **** to low beam and pull out on it to turn on fog lights and all works fine. Just not in the Auto position.

Question:
How did Yenrod correct the problem and has anyone else experienced this problem.

Thanks in advanced for any advice you can give.
Chad

 

cmg1558 did you fix the problem? because I have the same problem, I have a 2005 F150 Lar. 4x4 SCrew

 

My guess is the switch isn't working on auto since the eye is working, you have no other fuses blown, and you can hear it clicking.

 

I have not fixed it yet, but have deduced where the problem is. This is an intermitting problem and it is due to faulty connecter or bad design and has nothing to do with the switch or anything in front of the rear most seats. Try starting your truck with the auto lamps on at night. If only the fog lights and parking lights come on, go to the back seat, raise the rear bench seat and slam it down. Now go see if your head lights came on. Mine did after doing this and it was by sheer frustration of the lights doing this that I happened to slam the bench seat. I had read on article stating that the problem was behind the rear seat in a connector. One pin on the connector overheats and melts the connector, causing it to lose contact. The head lights pull a lot of current and either the connector pin could not handle it or the connector did not make good contact, causing a bit of resistance at the pin which heated up. Trouble is, you have to remove the back seat and replace the connector which plugs into the BSM. Here is the link detailing the fix.

http://www.f150online.com/forums/electrical-systems/408510-automatic-headlight-problem.html

I had not had the time to mess with it, so I have been operating in manual mode.

 

All,

This is what I ended up finding: a short in the massive wire bundle that runs down the channel of the driver's door (removing mouldings and carpet). Mine happened to be located almost directly under the hood release lever (where the wires start to turn/bend upwards toaproach behind dash/firewall transitions.

 

none of my lights work on auto

 

pr

 

You can pry up both driver's side plastic door sills and carefully examine the wires to see if any look unusual (broken rusted, or burned). If they all look good, then the problem is likely with the BCM (located behind the back of the rear seat). Water entering around the sliding rear window could have caused a problem with one of its connectors. Or, the problem could be the BCM itself.

Considering the difficulty of removing the back of the rear seat and the high cost of replacing the BCM, you may opt to turn the headlights on manually.

 

I have the same ('05 Lariat Crewcab 4x4). My recent problem is the battery dying several times in a week and needing to be jumped. I unplugged any other parasitic drains - added lights and dashcam - but it still died. I am now on day five of the battery having no problems and keeping a charge. The difference? I turned off my autolight setting.

Has anyone else heard of this issue? I'm the original owner, have almost 200K miles, and my truck has been through some stuff (fives teens driving it, three learning to drive, mudding, driving through a creek {by a teen, of course}, hauling stuff, going on a RV trail, etc). Just looking to see if I can get a confirmation from anyone else that the autolights could be the source of my parasitic drain on m battery.

Thanks in advance!!

 

Have you tried to see if you bumped the roll dial beside the other light handles? Also, you’re aware that you turn the **** to the right & for your fogs then pull out that **** to turn on those lights? That roll dial got me one time. Guess I bumped it, got it out of normal position nothing seemed to work right…
I know your probably aware of those things but, if not your fix is simple…