How to reset brake warning service

[jlee]

I have an e63 2004 and I reset the warning service for the oil change. All worked well. On cycling through the menu I thought id also reset the brake pad as these were changed not long ago. Now i get a warning when i turn the car on that the pads were due 9k miles ago and i cant seem to clear this one. Any ideas?
thanks

[jlee]

I cant reset it, the mileage stays as -9000 miles though and a red service light and chime come up on the dash when i first put the key in

[jlee]

i can reset everything apart from brake warning for some reason.