2014 Visor Power Gone, Fuse Blown

I went on a road trip, and while visiting family, I had the local Ford dealer repair the sunroof. It had previously been stuck open, but I manually (with a wrench) closed it to keep the rain out. The dealer had to replace the sunroof frame.

When I got home, I found that the garage door opener (CAR2U type) wouldn't open our garage door and the LEDs above the buttons were not lighting. It was working when we left and I didn't have a reason to try it until we got back. Looking through the manual, I saw that the power is fed via position 25 in the passenger compartment fuse panel (demand lamps, glove box, visor). I noticed that the lights on the visor vanity mirrors were also not working. So I checked the 10 amp fuse in position 25 and found it was blown. I replaced it with the 10 amp spare from position 31 and it blew immediately upon insertion.

My presumption is that the Ford dealer damaged the wiring to the visors when he was repairing the sunroof, causing the short circuit that is blowing the fuse. There hasn't been any other trauma or work on the vehicle that's related to this problem.

When I brought it to my dealer at home, for some reason the mechanic said that the problem was the "body control module", and that his diagnostic system told him so. This makes no sense to me, and in fact, when I Google it, I don't even find a part number for a "body control module" for a 2014 Expedition. I rejected his explanation and asked the service advisor to ensure the mechanic has all the details about the issue that I had supplied them even before bringing the vehicle in.

So just wondering...does my assumption about the cause make sense? And what on earth would a "body control module" have to do with it, if such a part even exists?

I'd bet the sunroof repair mechanic pinched or damaged one or more wires for the visor mounted garage door opener wiring harness (and other items on the circuit). This would cause an open short, blowing the fuse, if the wire break was touching the metal roof (or other metal braces or an adjacent broken wire).

The visors were probably removed to repair the sunroof, and the wiring feeds through the shafts and into a bundled harness.

You are correct that the BCM should not be the culprit - especially due to the recent work that was done.

99WhiteC5Coupe said:

I'd bet the sunroof repair mechanic pinched or damaged one or more wires for the visor mounted garage door opener wiring harness (and other items on the circuit). This would cause an open short, blowing the fuse, if the wire break was touching the metal roof (or other metal braces or an adjacent broken wire).

The visors were probably removed to repair the sunroof, and the wiring feeds through the shafts and into a bundled harness.

You are correct that the BCM should not be the culprit - especially due to the recent work that was done.

Click to expand...

Update from the Ford service guy - he told the service advisor that he looked at the wiring and there was no damage, and that it's still the BCM. They are getting quotes and ETA on the parts they claim they need to fix this and the two other issues it's in the shop for. My guess is that they will change the BCM, the problem will still be there, additional delay will ensue, and there will be a claims mess with Ford Continued Service Plan, especially if the sunroof repair they paid for caused the problem. A real adventure.