well I changed the tune on my flash tuner the other day and seem to have lost cruise control because of it.. Im not sure if it was the changing of the tune that has dont it but I was using cruise control about 5 mins before so think it was.

has the ever happened to anyone with/without tune??

is there a fuse or something that could have blown causeing this??

Might be a bit left-field, but are you touching the brake at all between starting the car and turning on the cruise control...as it needs to see the brake light circuit working before it will engage.

If not then I got NFI. Have you tried it on the factory tune (if possible)?

Check to see if both your brake lights are working. If there is any drop in voltage the cruise turns on but will not set.

as mentioned check the obvious, fuses etc, check operation of brake lights as if they are not working it may be affected, a faulty brake light switch will also stop it from working.

If that is all ok, flash the standard tune back into the car, it it now works, you may have a tune based on an incorrect processor code for your car.

well today the horn stopped workin haha but it seems to work after a certian amount of right hand lock??? any ideas

Clock spring on the steering column, could explain all your problems