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Fix
I took delivery of my 550i (Dark Graphite Metallic/Black Nappa/ZAV/ZDH/ ZSP/ZP2/2TB/Convenience) in Northern California in early August (production date 6/1/10) and noticed pulling to right as others have detailed.
BMW service checked alignment, swapped the front tires from left to right and rotated struts, removed both front struts and compressed the spring to rotate the lower section of the strut assembly by 10mm and finally swapped a complete set of wheels from another car per the instructions of the regional technical engineer, all to no avail. Confirmed that car drifted on roads without a crown. A PUMA case was then started.
New software for the EPS module is available, was installed and has fixed the problem. Good luck to others with this solution.
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