plankey
New Member
I have a 2018 FX4, XLT Expedition. My problem is after plugging trailer to suv the lights work fine, and the trailer brakes work, but are very weak. I set it up through computer to brake hard, and have the gain turned all the way up full to 10. I can feel the trailer brakes engaging and disengaging, but it’s very weak. Every other truck I ever had, when turned all the way it would lock up the trailer tires. It won’t even come close to doing that even with the trailer empty. It does this no matter what trailer I hook to it. Am I missing something here?