Trailer brake controler will report not connected when it is connected correctly. Systemm was tested and everything on the trailer is working properly. system was working corretly and suddenly stopped when on the interstate. Have had multiple shops look at the issue and no one can locate the issue. The radio/infotanment system will also disconnect radomly. Both act like a wire is lose. disconnect then reconnect and disconnect and reconnect, over and over. The radio disconnecting from the phone is an issue however not a safety concern like the trailer brake issue is. When I am pulling a 16,000 pound camper and the trailer brake stops that means I no longer have traler brakes and that can be an issue when stopping.