2.0 Preparing the surface

WARNING: This page is about a different car, the 2013 BMW 550i GT, 2012 BMW 550i GT, 2011 BMW 550i GT, and 2010 BMW 550i GT. However, it is still accessible from the selected car via links, so may be relevant.

Surface temperature of bonding surface and room temperature at least 18°C.
Cover area around bonding surface.
Remove swarf, flaked paint etc. from bonding surface with a brush. Use of compressed air prohibited!
Clean bonding surface with cleaning agent R1.
Let cleaned surface air dry for at least 2 minutes. Bonding surface must be completely dry.
Do not contaminate bonding surfaces once they have been cleaned (sweat from hands, fingerprints, etc.).