Replacing Hydraulic Pump GS6S53BZ (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.
NOTE:
Numbers in text refer to numbers in figure.
CAUTION:
Before working on hydraulic system: reduce pressure in hydraulic system by means of service function in DIS Tester. Disconnect hydraulic pump relay in electronics box. DO NOT reconnect relay for entire duration of repair work.
NOTE:
After completing work: check fluid level in hydraulic system by means of DIS Tester "Service Function". Perform "Teach in transmission" service function by means of DIS Tester.
Remove underbody protection. Remove right heat shield.
Release screw (1) and remove grounding strap. See Fig 1 .
Release line (1) and screws (2). See Fig 2 . Unlock connector and remove. Remove hydraulic pump. Upon installation, tighten fasteners to specification. See TORQUE SPECIFICATIONS .