Just bought an 07 RSTD with only 1340 miles on it... and the only thing that seemed iffy on it while test driving was the Cruise control.
Haven't ridden it much yet.. so may still need to test it more, but one symptom I had was .. after getting it to set (hold throttle a couple of secs), If I hit an overpass where it had to increase speed.. it would there after keep lunging then slowing , then lunging and slowing, etc... until I canceled it and reset it. It also did this if I hit accelerate button.
Decelerate button does nothing.
I did read in owners manual that the Cruise only works in 4th and 5th gears.
And it does have a diagnostics mode you can put it in.. mine tested ok.
If anyone knows what is causing the lunging I would appreciate the info.
Thanks.
Keith