Bronco Joe

98.5 MT, Quattro, 2.8v6 30 v, 205k+, have not had issues in the past with resetting this service message. Have the instructions on how to do it with the control stalk but no go, battery has been disconnected, mechanic has tried and all no go. Any thoughts? anyone else run into this issue? it's annoying that it can't be reset, doesn't impact the driveability of course but still, hate to look at it when i start the car.