So what is it, neutral with ignition off or in accessory when being towed four down? Mine is push button so I tested both scenarios.
I positioned myself on top of a long grade, parked and shut the ignition off. I put my foot on the brake, pressed the ignition switch, moved the transmission to “N”, removed my foot from the brake then shut off the ignition. I opened and closed the door to simulate leaving and waited until everything timed out. The only thing still displaying was a red “N” on the dash where the gear selection shows. I let off the hand brake to freely roll as if I was being towed. I successfully engaged the foot brake three times then on the fourth attempt noted that power assist to the brakes was gone. My conclusion is the C-Max brakes are not active when the ignition is off.
I repeated the test exactly the same except in accessory. The brakes remained powered the entire way down the grade with no fade. My conclusion is C-Max brakes are active when the ignition is in accessory. Hopefully they remain so without timing out.
Under both tests the steering was unpowered. When I slightly depressed the brake, while also depressing the ignition button, this woke up the power steering instantly.
So is it right to be off or in accessory?