Surface Cracks In Cooling Duct Crosspieces

WARNING: This page is about a different car, the 2021 Audi S4 and 2021 Audi A4 Quattro. However, it is still accessible from the selected car via links, so may be relevant.

The cracks -arrow- on the surface of the cooling channels were produced during the manufacturing process.

Fig 1: Cracks On Surface Of Cooling Channels Were Produced During Manufacturing Process

Courtesy of AUDI OF AMERICA, LLC

The surface cracks in the cooling duct crosspieces do not mean the ceramic brake rotor is faulty.