Brake controller

1bentbike

My daughter has a 2017 BMW X5. What brake controller are people using?

Denny16

I use a vehicle non specific (works with any TV that has a 7-pin with 12VDC charging circuit on center pin.  It is an Curt Echo, uses your smart phone to setup and control brakes manually, if desired.  No need to modify vehicle wiring, it connects into the 7-pin and the trailer plugs into it.
cheers

ChrisFix

@1bentbike
If the X5 is pre-wired for a brake controller, then you have a fairly wide variety of choices depending on budget and installation goals.
I use the Redarc Tow-Pro Elite and love it.
https://redarcelectronics.com/products/tow-pro-elite-electric-brake-controller

Perhaps the most mentioned brake controller in this and other trailer forums is the Tekonsha Prodigy series of brake controllers.

The Redarc allows for a more customized install, with nothing hanging under the dash.
The Tekonsha allows for a less customized install, with the option to unplug it and move it to another vehicle.

The Curt Echo that @Denny16 mentions is basically "installation free" and can easily be moved from vehicle to vehicle - but requires a cell phone app to manage it's settings or to engage the brakes manually.