Has anyone had this same problem recently. I have a 2008 Landrover LR3 and just noticed the problem when I sold my old boat and upgraded to a new one. The LED's on the trailer flash whether the truck is running or not and it's clear the trailer and truck are not "talking" to each other since my backup warning does not disengage and the auto-level system is not working with the trailer either.
I followed the advice of others and bought the part listed on earlier posts but it does not work at all. I'm debating about taking the trailer to a local electrical shop and having them swap out all of the lights.
Any other creative ideas? I'm stumped.
Current: 2012 Prostar 197 WTT
Past: 1996 Prostar 190