"I had no symptoms of power-steering issues or ESS ever before or when I took it in. "
Are you sure that the ESS worked when you brought the car in for the V53 Recall? You're not one of these people that disables the ESS right after starting the car are you? If you are, you may not have seen any ESS error message displayed before the recall was done.
If you're sure the ESS was enabled and active and actually went thru an ESS autostop and autostart sequence on the day you took it in for the V53 Recall, then it's almost a sure thing that the mechanic who did the recall screwed things up. He may have forgot to reconnect the negative terminal to the auxiliary battery when he was done. That might explain it.
2018 Pacifica Touring L
Velvet Red Pearl
Tire and Wheel Group
Trailer Tow Group
Power 8-Way Passenger Seat