Removing Hydraulic Pump Relay (SMG)

WARNING: This page is about a different car, the 2005 BMW 645Ci, 2005 BMW 545i, 2004 BMW 645Ci, and 2004 BMW 545i. However, it is still accessible from the selected car via links, so may be relevant.

Remove microfilter housing lower sections on left and right. See CABIN AIR FILTERS . Remove tension strut on spring strut dome. See TENSION STRUTS .

Unscrew bolt (1) of fresh air duct. See Fig 1 . Loosen screws (2). Turn quick-release fastener (3) approx. 90° counterclockwise. If necessary, release screw on pipe clamp. Feed out fresh air duct (4) in direction of arrow and remove. Upon installation, if necessary, replace damaged seals. Make sure fresh air duct (4) is correctly seated. Tighten fasteners to specification. See TORQUE SPECIFICATIONS .

Fig 1: Removing Fresh Air Duct

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Unlock stopper (1) in direction of arrow. See Fig 2 . Unfasten screws. Lift out cover (2).

Fig 2: Removing Hydraulic Relay Cover

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Unlock and disconnect relay (1). See Fig 3 .

Fig 3: Removing Hydraulic Pump Relay

Courtesy of BMW OF NORTH AMERICA, INC.