2.0 Preparing the surface

WARNING: This page is about a different car, the 2011 BMW 750xi, 2011 BMW 750Lxi, 2010 BMW 750xi, and 2010 BMW 750Lxi. 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 debris, 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.).