One problem related to steering has been reported for the 2004 BMW 5 Series. The most recently reported issues are listed below.
I owned a 2004 BMW 525i e60 had "active steering fault came on at all time . The dealer wants 4000usd to fix the problem but the steering control is fine . I believe this issue had related to steering angle sensor defective from BMW factory and dealers in us did not want to fix this manufacturing defects. This problems had happened to all BMW's . All over the blogs . Customers had filed a complaint about this issue. Please looking into this problem(s).