The 7th gen owners manual says it should start at either 25 or 26mph, I forget which one. I can get mine to kick in at about 25-26. It won't activate lower than that. You need to first select the toggle switch so there's a green "Cruise Control" light on your dash and then once at the desired speed, you select the bottom switch of the up/down rocker switch. I think it says "set". Then you just press up to increase by 1mph at a time, or down by one mph at a time. If you hold your finger on either button it will keep speeding up or slowing down until you take your finger off the button. Pretty simple really. Kind of like a video game really.
If you clutch, brake or press cancel the CC deactivates and if you press the up half of the rocker switch, providing the car is above 25 mph it will reengage the cruise control and accelerate back up to the previous speed you were doing before the cruise control was cancelled. This part I like best. I end up driving around on the cruise control all the time. Read the road and cancel the cc well in advance if you need to slow, just roll in gear, slowing all the while, then once things are good to go, press the top button and let the car take you back up to the speed you need. This is ideal in 6th gear A-Road cruising, where 6th gear will drive you from 25mph up. It's a good way to keep your acceleration mild and consistent which also saves on fuel. Driving like this I manage 450 miles from a tank of regular, sainsbury's unleaded in my 2.4, with no motorway.
Cruise Control for the win :lol: