00 00 ... Steering fluid reservoir: Check oil level.

WARNING: This page is about a different car, the 2005 BMW 545i and 2004 BMW 545i. However, it is still accessible from the selected car via links, so may be relevant.

Visual Inspection And Leak Test:

Check connections, hoses and steering gear for traces of fluid.

Checking Fluid Level:

Check fluid level with engine switched off at expansion tank of power steering/ride-height control system.

If necessary, add hydraulic fluid (refer to appropriate article) up to Max. marking (1).

Fig 1: Identifying Steering Fluid Reservoir Min/Max Marking

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: If the fluid level has dropped to the Min. marking (2), you must check the power steering and ride-height control for leaks and issue a separate invoice for this work. It Is Not Enough Merely To Top Up The Fluid.