Ford F-450 Super Duty Questions - Cruise Control Not Cruise Control Not Working. Report; Follow; Asked by RVinSD Aug 25, 2010 at 07:33 PM about the Ford F-450 Super Duty. Question type: Maintenance & Repair. I have a f450 v10 (configured as a Class C RV). During our last trip the Cruise Control didn't work. Can't find any mention of a fuse in the owner's manual. 2008 Ford F-450 Super Duty Cruise Control Not Turning On | Quick Fix - YouTube Mar 24, 2017This is the first thing I check if the cruise control is not coming on. Follow me on Instagram and twitter for updates and more content @MrOffAndOn.