Ball and Nut or Rack and Pinion Power Steering
WARNING: This page does not describe the selected car, but rather 259 other vehicles, including the 2006 BMW Z4, 2006 BMW X5, 2006 BMW X3, 2006 BMW M6, and 2006 BMW M5. However, it is still accessible from the selected car via links, so may be relevant.
Only reputable brand Automatic Transmission Fluid (ATF) of Dexron® III formulation may be used for the power steering and power steering pump.
In case of brief hydraulic noise after starting at low outside temperatures, we recommend replacing the red ATF with green CHF or LHM oil (see below).