Now after one year of ownership of my 2000 XKR i still have no solution to the fault message. ABS sensors are clean. Brake sensor is new. Brake lights work fine. Today a had a (very expensive) visit to my local Jaguar dealership. They tried to remove the ACC module as discribed on this forum, by disconnection the "radar" and do the STD CC programming in the computer. The ACC not avaiable message still is on the dash. After consulting the importer they said that the Brake, spees module LJD1962AA is the faulty element. So not the "radar". My question is, i never have read this in one of the threads about this issue. Any experience to share is welcome about that part. And also, where can i find that part. My may sourch (ebay) doesn't give a hit. Jaguar classic spare? well, i rather keep on driving with the fault message that spend 2000USD and others don't have the item.