Originally posted by John - K5AWO
You don't use Resume/Accelerate to set a lower speed.
Just hit the brakes to disengage, drop down to the lower speed and punch SET. It should reprogram to the desired speed.
Just being in an "ON" state should have no effect on being to reset to lower speeds, providing you use the SET button.
What you are describing is typical of older two function cruise controls. You can set them at speed each time, or you can accelerate to a new speed.
The resume feature is so clumsy to get to on my work truck, I just punch the SET button each time I want the cruise.