Defect
On certain vehicles, the bolts that attach the electric power steering assist motor to the steering gear may corrode and break. This could cause a loss of power steering assist.
Safety Risk
A loss of power steering assist may result in a sudden increase in steering effort, especially at low vehicle speeds. This could increase the risk of a crash.
Remedy
BMW will notify owners by mail and instruct you to take your vehicle to a dealer to replace the bolts and apply a wax sealer. If one or more of the bolts are broken or missing, a new steering gear will be installed.