I had all brakes replaced pads rotors and sensors. After i had "Replace brake pads" warning light on display and warning light on dash. Took it to BMW they said i needed computer upgrade as sensors weren't recognised. Paid $250. Problem still there. Now BMW state veh needs new DSC as no earth to rear sensors. Cost $2500 brakes cost 1500 upgrade was 250. Anyone heard of this problem? Veh is z4 E89 im in Australia. Looking for answers or cheaper part to purchase overseas. Anyone help?