Just had this issue while pulling my trailer at 65 mph with my 012 Super Crew, 5.0. Engine died for about 15 seconds, then came back on with check engine wrench and flashing battery symbol. I pulled off at the next exit and pulled into a Flying J parking lot. Shut her down and checked all the battery connections. All tight and no corrosion. Started it back up and no warnings. We were day and half from home, so I took it to the nearest Ford dealer, luckily only 7 miles away from where we were.
Service manager put a tester on the battery and it showed good. Then he had a mechanic come out to read the codes. Nothing. Then the mechanic says he thinks he's pretty sure he knows what the problem is and tells us about the TSB. He pops the lid off the fuse box and shows me that the fuse is burned looking on one end.
The problem is that the fuse box socket for the fuel pump 20A fuse can't handle a 20 Amp load. the socket gets so hot that the fuse melts - it doesn't blow. The fix is to move the circuit to an unused socket in the fuse block that will handle the current. Ford sells a kit for about $20 to fix this. The TSB is 15-0137.
I had them do the fix and after a couple of hours (mostly paper work, proper procedure BS), we were good to go.
I think you're nuts if you decide to ignore this TSB fix, because it probably will bite you at a most inopportune time. I sure would have done the fix if I had known about it, before setting out on a 5K mile RV trip, mostly out in the boonies.
-jj
Current Rig: 2017 F350 Crew Cab Short Bed 4X4 Powerstroke, 2018 Grand Design Reflection 29RS. Dearly Departed: 2003 GMC Sierra 3500 Dually, 2002 Bigfoot 25C10.6.
