Ignition Coils: Installing
WARNING: This page is about a different car, the 2012 Audi A8 and 2011 Audi A8. However, it is still accessible from the selected car via links, so may be relevant.
-- Insert all ignition coils loosely into spark plug shaft.
-- Align the ignition coils to the connectors and then connect all of the connectors simultaneously onto the ignition coils.
-- Press the ignition coils uniformly onto the spark plugs by hand (do not use an impact tool under any circumstances).
Further installation is performed in reverse order.