[jsb5717]

As stated, start with the truck and check the easiest things first. Your trailer is newer so I wouldn’t suspect brake wiring issues…especially if everything worked originally.

However, if you don’t find issues on the truck side then you’ll need to dig into the trailer side. When we got that “intermittent” message I eventually found 2 issues on our trailer.

1. A broken brake wire inside one of the wheel hubs
2. Worn wire insulation in the wires that ride loosely inside the axles. The only way to find this one is to cut one end of the wires and pull them out. So you’re forced to “fix” it before really knowing if it’s “broken”. But it’s a relatively easy operation and either solves the current issue or prevents a future one. Once the wires are pulled from the axle then rewire the ends and zip-tie them tightly on top of the axle. Our brakes have worked great since.