After reviewing all the forum pages a couple of times in the last year, I have yet to see this warning which I encountered last night:

"Cruise Control is Unavailable"

What causes this warning to pop up? Will it go away with time, or by clearing or resetting codes?

Thanks guys.

 

Have you checked the fuses?

 

OR ---- A bad Brake Switch. This switch has both Normally Open and Normally Closed Contacts.

 

There are a lot of threads on this. It is most commonly the brake light switch. It can also occur if there is a problem with the steering wheel cruise control buttons, possibly a stuck button or bad wiring, but really, this is likey the brake light switch.

 

+1 on the brake switch. This might help JagRepair.com - Brake Switch Replacement

 

If you go to the OBDII code chart for the Jaguar you will find A LOT of issues that first disable the cruise control. Do you have a CEL?

 

Thanks for all the help guys..... Ed