electricd7

Hello,

I have always left my truck's (2006 F150 FX4 SuperCab) headlight setting on automatic. Well last night, the headlights didn't turn on, I had to switch to manually on. When I first turn my key to ignition (and headlight switch is in auto), the headlights flash on quickly and then off. The parking lights are left on. No matter what I do, I can not get the headlights to stay on when in auto mode. I noticed this the same day I had the driver's side front tire changed, but I can't figure out how that would be related? Can anyone give me some troubleshooting steps as I am not really even sure where to begin to figure this problem out. Thanks!

ED7

GATORB8

Check Central Junction Box Fuse #40.

If that doesn't work, it's either

• Circuit 15 (RD/YE) open
• Circuit 196 (DB/OG) open
• Vehicle security module

electricd7

I checked fuse 40 and it is good. Where do I find the 2 circuits?

GATORB8

15 runs from the switch to the BSM
196 is the fuse box to the switch

electricd7

Thanks.. Also where is the light sensor, so I can do this testing during the daylight!

GATORB8

It's the black bubble on the dash - drivers side near the windshield

electricd7

The one that flashes red when the doors are locked? If so, I see it

GATORB8

Yep, it's also the indicator for the PATS passive security system.