THE TAIL LIGHT ASSEMBLY ON MY BMW IS DEFECTIVE, WHICH CAUSES THE BRAKE LIGHT TO NOT WORK, WHICH IS DANGEROUS WHEN DRIVING. A QUICK SEARCH ON THE INTERNET TURNS UP THAT THIS IS A VERY COMMON PROBLEM IN X5'S, AND I THINK BMW SHOULD BE RESPONSIBLE FOR REPLACING THESE ASSEMBLIES, NOT THE CUSTOMER. THIS IS EXTREMELY DANGEROUS, AND WE SHOULD NOT HAVE TO FOOT THE BILL FOR A MATERIAL DEFECT IN THEIR PRODUCTS.