On my "02 X5, there are 2 bolts in the back and 2 bolts in the front. My seat was in the farthest back position when the controller died so it was stuck in that position. The 2 front bolts were easy to see, under a plastic/rubber cap in the tracks that move the seat. But, I finally had to take to the dealer because the seat was positioned right over the rear bolts and I could not get access to them. Hope this helps. Good Luck!