No power at fog light module 2019

[nick22t]

2019 Ford Expedition Limited

Factory led fog lights

Ive recently noticed that neither one of my fog light are working. Green indicator on dash illuminates but neither light comes on. I checked to see if the module and get 12v and they’re not getting any power.

What should I check? I have forscan and adapter which I used to turn on Bambi mode in the drop down menu.. this is what led me to realize that neither was working in any scenario

 

[Hellwig]

are you sure the light bulbs good? I am aware you've checked power module. But just in case, you know.

 

[nick22t]

No I don’t even bother with the bulb once I realized there’s no power to the module

 

[Hellwig]

No I don’t even bother with the bulb once I realized there’s no power to the module

what about fuse?

 

[nick22t]

That was my first thought too but couldn’t find anything in the owners manual in either fuse box.. My understanding is that there isn’t a fuse because it’s controlled by the bcm..

 

[99WhiteC5Coupe]

2019 Ford Expedition Limited

Factory led fog lights

Ive recently noticed that neither one of my fog light are working. Green indicator on dash illuminates but neither light comes on. I checked to see if the module and get 12v and they’re not getting any power.

What should I check? I have forscan and adapter which I used to turn on Bambi mode in the drop down menu.. this is what led me to realize that neither was working in any scenario

Perhaps use ForScan to return to the original setting and see if that resolves the fog light issue?

 

[Anthony DeVor]

You are correct that there is no fuse it is controlled through a FET within the BCM. The BCM on my 17 Expy and 16 & 18 F150's have two fuses from the SJB in the engine bay that provides power to the BCM - one fuse for the drive side lighting and the other for passenger side lighting. If I remember correctly 1 is a 50amp & 1 is a 40amp. I do not remember the fuse numbers off hand. Usually if a FET has been shorted there will be a code visible in Forscan.

 

[Mr Big]

Did your fog lights ever work? If not did you buy new or used? If used the vehicle may not have come with fog lights and the previous owner installed an OEM set. If this was the case, you can check with ForScan, to see if they are disabled in the BCM.
I'm not sure this could be your issue but this is what I read:
There is no fuse or relay for the fog lamps.
Signal for the fog lamps is sent from the headlamp switch to the body control module and then the body control module turns on the fog lamps directly.
Check for 12v on the grey wire at the headlamp switch with the fog lamps selected. If 12v is not present, replace the headlamp switch. If 12v present, then the body control module is not sending signal to the fog lamps and it will need to be replaced.

 

[LegalBrief]

Sorry to be obvious, but are the high beams on, fogs turn off with high beams enabled

 

[Mr Big]

Sorry to be obvious, but are the high beams on, fogs turn off with high beams enabled

My fog lights turned on only with low beams, as well. My vehicle, having LED head lights, allowed high and low beams on at the same time. But I needed to enable Bambi mode to have fog lights and low and high beams on at the same time.