My wife drove 2004 325i to store, no problem, got in to leave and no power steering. Has fluid, no leaks and the belt is on and pump spinning. What happened?
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2004 BMW 325i
Question: Power Steering
Answer #1patrick mannion from Greg Solow's Engine Room, August 31, 2009, 19:42Master
I have no personal experience of this but see a Technical Service Bulletin from BMW concerning loss of steering assist/heavy steering effort required (SI B 32 19 05)
It attributes internal pump wear to power steering fluid impurities and says to replace the pump and fully flush the steering hydraulics.
It is best not to jump to conclusions but have the system checked out by someone familiar with BMW and be aware of this TSB.