Does a cracked belly pan on 2001 Audi A4 Quattro 2.8 need to be replaced?

A cracked belly pan on a 2001 Audi A4 Quattro 2.8 needs to be replaced if it allows water to splash onto the engine and ancillary components that are sensitive to water. The car manufacturer would have installed the belly pan to prevent this from happening, so it should be replaced if the belly pan can no longer fulfill this function.