You say you were going 60 and the brakes engaged. Were you towing it then?
Do you have enough slack it the brake cable between the surge lever and the toad? Suppose to be able to lift the cable about 2". Were you on levelers when you hooked up the toad? Try hooking up road ready.
Drive it around if you can. Try lifting up the pedal with your left foot and see if that causes the brakes to release.
Disconnect the cable from the brake pedal and try that. Drive the Canyon around and see if that makes a difference. The first thing the dealer is going to say without checking anything is that it is the Ready Brake.
Do you have to disconnect the battery before towing? What are the towing four down instructions in your owners manual?
