Battery In Luggage Compartment Under Floor Trim Panel
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2006 BMW M3, 2005 BMW M3, 2004 BMW M3, 2003 BMW M3, and 2002 BMW M3. However, it is still accessible from the selected car via links, so may be relevant.
Follow instructions for disconnecting and connecting battery. Refer to 12 00 ... INSTRUCTIONS FOR DISCONNECTING AND CONNECTING BATTERY .
Fold back floor trim panel (1).
Lift cover (2) on battery negative lead.
Disconnect and cover battery negative lead (3).
Release nuts (4).
Remove battery cover.