2011 FX4, gen1 3.5... Today, hopped in the truck to take it to the body shop. It cranked, started (I think) then shut itself off immediately. I turned off the key then tried to start again... All dash cluster lights, climate controls still working. Of the many times I repeated the key-out, key-in, try-and-start routine. I saw the "sys off to save BATT" message at least once. In the dash I am getting the following alerts:
I have had off-and-on problems with this battery (3rd napa legend on original purchase, had two warranty replacements. This third one is stamped march 2020. It never died outright, but would trigger the bms to dissable the media system at key off intermittently) so I went and grabbed a new motorcraft hoping for and easy fix as a lot of other members have experienced. Unfortunately, the new battery has not solved this one.
We towed our camper yesterday and left it hooked up over night, everything was working properly. This morning I unhitched, started the truck and moved it closer to the garage to finish unloading a few things... also vacuumed the rugs so it would be presentable during its stay at the body shop. After that, the "no crank, no start" condition presented itself along with the aforementioned warning lights... so far no DTC's showing when I scan for codes. I can hear the relays clicking at the passenger kick panel, also hear them in the "tunnel" when in park and brake pedal depressed, new starter march 2021.
I have the factory trailer brake controller, it was installed by the local dealer shortly after we purchased the truck new back in 2012. I have tried pulling the fuses for the brake controller both under passenger side dash and at the power distribution panel under the hood to no avail.
Sure hope one of you guys has an idea of where I should look to rule out any other issues... my buddy is trying to get his scan tool set up with a Ford license so we can do a deeper dive into the can bus and see if anything looks awry.
EDIT: Update... MY problem was fixed by replacing a blown 15A fuse, no. 30 in the engine's fuse/relay panel. I suspect some shoddy seat heater wiring shorted out while vacuuming the carpets and caused it to blow the next time I started the truck. That one tiny fuse presented all of this supposed trouble.
Read on for links to tech manuals, wiring diagrams and some other things you might look at, if you are having a similar problem, before you spend money at the stealership or mechanic's shop.
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- battery
- "Service Advance Track"
- "Trailer Brake Module Fault"
I have had off-and-on problems with this battery (3rd napa legend on original purchase, had two warranty replacements. This third one is stamped march 2020. It never died outright, but would trigger the bms to dissable the media system at key off intermittently) so I went and grabbed a new motorcraft hoping for and easy fix as a lot of other members have experienced. Unfortunately, the new battery has not solved this one.
We towed our camper yesterday and left it hooked up over night, everything was working properly. This morning I unhitched, started the truck and moved it closer to the garage to finish unloading a few things... also vacuumed the rugs so it would be presentable during its stay at the body shop. After that, the "no crank, no start" condition presented itself along with the aforementioned warning lights... so far no DTC's showing when I scan for codes. I can hear the relays clicking at the passenger kick panel, also hear them in the "tunnel" when in park and brake pedal depressed, new starter march 2021.
I have the factory trailer brake controller, it was installed by the local dealer shortly after we purchased the truck new back in 2012. I have tried pulling the fuses for the brake controller both under passenger side dash and at the power distribution panel under the hood to no avail.
Sure hope one of you guys has an idea of where I should look to rule out any other issues... my buddy is trying to get his scan tool set up with a Ford license so we can do a deeper dive into the can bus and see if anything looks awry.
EDIT: Update... MY problem was fixed by replacing a blown 15A fuse, no. 30 in the engine's fuse/relay panel. I suspect some shoddy seat heater wiring shorted out while vacuuming the carpets and caused it to blow the next time I started the truck. That one tiny fuse presented all of this supposed trouble.
Read on for links to tech manuals, wiring diagrams and some other things you might look at, if you are having a similar problem, before you spend money at the stealership or mechanic's shop.
