I do now own a F150, but I do have a 2015 Focus ST. This and another truck forum's are the only 2 I play around on. Here I research stuff as I work towards getting my 66 F100 back on the road.

Well my Focus ST has a issue where when I am driving, and if hit a bump just right the hatch pops open. Then rattles till I reclose it. I have had it at the dealer twice. Once for a new latch mechanism, and the other for a BCM reprogramming. Or Body Control Module.

The problem started last November, and was first looked at in December.

I have gone as far as not having my key fob in my pocket when I drive, and making sure I can not hit the dash button. Which for me is a physical impossibility at my height. As for the key fob I have put it face up as so the buttons can not get pressed, and keeping it separate of stuff.

After the repairs it works fine for a couple weeks. Then once it pops the first time it starts to become more frequent. Sometimes little bumps will pop it where big bumps will not. I have tried several times to recreate the popping, but it won't work that way. Also it has happened all but once at freeway speeds.

Compounding the issue to some extent I drive it about 600 miles a month, and 75% being a hour or so trips. With almost exclusively weekend drive time. I have a company supplied work van, and a free gas card.

I have checked online, and Ford has a recall for the BCM. The jist of it is that if you hit the trunk release button once "the one in the car" the hatch will pop open. Also a few other owners have reported their hatches will not open when the button is pressed. I have a feeling one was lemoned after a failed hatch replacement. So my problem is the inverse of their issues, but I believe it stems from a common problem area. What I do not know.

I bought the car because I just kind of needed/wanted something fun that I did not have to worry about for quite awhile. All but 1 of my cars I have always driven old cars/trucks, and being dependant on my skills + time to keep them on the road. My new job or career is a bit demanding of my time so I thought why not. So it bugs me alot when I have to deal with rattling from my hatch for as little as I get to drive it.

So do any of you guys work for a Ford dealership, and may have seen this issue? If so what area was it in so I can pass it along. My service writer is stumped, and not sure where to go next time when I drop it off again.
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I'll take a guess and say that they might want to check the wiring to the latch and make sure that it isn't pinched somewhere, causing an intermittent short.

Disconnect the switch on the dash or at the latch by unplugging it. If it stops, there's a short circuit somewhere.

 

Good point. A friend of mine's SUV (of another make) had a similar problem. It turned out to be a faulty module on the door lock. They found it by taking the door lock module & motor out.