I finally determined the cause on my truck. I usually deploy the side steps when I come home at the end of the day in the following sequence: put the truck in park, deploy side steps using the Uconnect icon, then turn the ignition off. No problem UNLESS my wife is with me. Then the sequence is: put the truck in park, she opens her door, deploy side steps using the Uconnect icon, then turn the ignition off. Every time that happens, “Press Brake and Push Button to Start” displays and the 12” Uconnect is blank but lit and will not go out until I start the truck and put it in gear.
I plan to contact my dealer but I wanted to put this out there in case it might help someone until there’s a fix.