Coast button???

What the hell does the "coast" button on the steering wheel do??? I know how to work the cruise control but I dont get what the coast button does....

if you have cruise control on, but you want to go a bit slower, holding the coast button will lower the throttle. when you have slowed down to the speed you want, let off the button, and the cruise control will keep you at the new spedd. the acc part of set/acc causes you to go a little bit faster.

ahhhh ok thanks man!

One 'click' of either acc or coast will accelerate or decelerate the vehicle in increments of one MPH.