Help! How do I use the cruise control on my Smart 453? Do I still have to keep pressing the pedal? [Facepalm] My Murano allows me to relax my feet. Is it broken, or is it supposed to be like this?

OP, how did you finally solve it? I have the same issue. When I press the button on the left to switch to cruise control mode, the right side buttons to adjust the speed have no response.

There's a round button labeled "LIM" at the lower left corner of the steering wheel. Press it to activate cruise control. Then use the up and down buttons on the left to set the speed. When the circle with "A" on the dashboard turns green, it means cruise control is working, and you can release your feet as the vehicle will maintain the set speed.