23 42 551 Replacing hydraulic pump GS6S53BZ (SMG): Notes
WARNING: This page is about a different car, the 2010 BMW 650i, 2009 BMW 650i, 2008 BMW 650i, 2007 BMW 650i, and 2006 BMW 650i. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT:
Before working on hydraulic system:
- Disconnect HYDRAULIC PUMP RELAY in electronics box
Do not reconnect relay for entire duration of repair work
- Reduce pressure in hydraulic system by means of Service Function in DIS Tester (BMW scan tool)
Installation:
Replace hydraulic pump relay.
NOTE:
After completing work:
- Check fluid level in hydraulic system. See 21 53... CHECKING/TOPPING UP FLUID LEVEL IN HYDRAULIC SYSTEM (GS6S37BZ/GS6S53BZ/ SMG)
- Perform "Bleed hydraulic system" service function by means of DIS Tester (BMW scan tool)
- Perform "Teach in transmission" service function by means of DIS Tester (BMW scan tool)