Seems to be a contentious issue. Here's my perspective:
Ford say it is required
It's needed if you have active cruise control or automatic emergency brakes and you want this to brake the trailer. These functions apply the brakes without generating the signal from the brake pedal, so the...
I believe it's the camera behind the rear view mirror. That's how my BMW worked.
What I'm curious about is how it handles highways where the speed limit says 70 and then there's another sign that says Trucks 60 (but the part that says 60 is same size as the 70 sign
Thanks
Maybe I misinterpreted and was $9/period and not per month. Checking now.
I think it's way more than $800, as it's now a 2 hour job and requires calibration of the camera