I reached out to etrailer and to Fordparts. Etrailer responded first. Apparently the smart towing features interfere with the Echo. You get that feature with the factory tow package. Etrailer still recommends the echo but now states it is not compatible with the smart trailering features. I returned the controller before I got the response so not sure if there are features tou can turn off to make it work. It does make sense though since the controller acknowledged the brake activation once i turned off the truck and depressed the pedal. I had setup the blind spot feature for the trailer and that may be the one feature I had not turned off. I know turning off adaptive cruise control had not effect sonit must be the blind spot setting for the trailer. Will be interested to see if others try to figure it out. Am disappointed that etrailer would still recommend when it doesn't work. Will probably go with the redarc.