00 00... Replacing spark plugs
WARNING: This page is about a different car, the 2005 BMW 745i, 2004 BMW 745i, 2003 BMW 745i, and 2002 BMW 745i. However, it is still accessible from the selected car via links, so may be relevant.
For further information on how to proceed, refer to 12 12 011 REPLACING ALL SPARK PLUGS (N62) .