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I tried both of these testers on my 2018 F-150 and received the same results. Once the display ‘trailer connected’ appeared, I pressed in the brake and the truck showed ‘trailer disconnected.’ When I released the brake the display ‘trailer connected’ came back on. I also noticed when either...
I have a 2018 5.0L and also having issues with the electric brake controller. I do not get ‘not connected’ and everything looks to be working. I use to hear the electric brakes on the trailer while parking. I have contacted my dealer who wanted me to bring in the truck with the trailer. They...