[MN2///M]

My install and coding went perfectly, sorry you are having problems. The vehicle does sense when the trailer is plugged in and changes some parameters, but pretty sure all this is selectable in the coding also. I meant to check mine to see how it operates with the trailer plugged in.

I'll try and find some time to plug my trailer in and see specifically how mine behaves, never really paid attention to it beyond the initial install and I don't tow often.

I would recommend posting your question in the coding forum; pretty sure someone can tell you what parameters control what functions. Coding is pretty easy if you want to dive in. I've done coding for my M4 and X5 and the hardest part was getting started and the associated worrying about messing with the computers in your car. Lots of good help out there though.