I had this problem. I also had a problem with my rear discs which brought up some lights on the dash. Took the car into Renault to sort, they did a clip test on all abs sensors/braking systems and sorted that problem out, it also had an added bonus of fixing the cruise control and speed limiter.
you should be able to set the speed though on the computer screen regardless of if the brake sensors are reporting as on/faulty.
No, I just had lines and like the OP says its wanting to be set but you can't set it.