Bringing this thread back from the dead as my wife and I are expecting real soon. Was this issue ever resolved? I am really surprised that BMW would put that disclaimer in the manual. I called BMW NA and they told me to ask my local dealership. Both dealer and BMW NA do not seem to know the answer as to why the disclaimer is there. Part department said they do not sell BMW infant seats specific for an 04 X5 and he hasn't sold a BMW infant seat the whole time he has been there.

I double checked with my local fire dept and my baby seat is set right using the latch system. He had no idea what the disclaimer was referring to and has not seen anything like that.

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-Arjay