Contact Corrosion

Contact Corrosion

General:

• Contact corrosion can occur if non-approved fasteners are used on the vehicle (bolts, nuts, washers, etc.).

• For this reason, only connecting elements with a special surface coating are installed.

• In addition, rubber or plastic parts and adhesive are made of materials that do not conduct electricity.

• If you are not sure about the suitability of parts, install new parts.

The following points must be followed specifically for the transmission:

• Through approximately 2004, the transmission housing for the Multitronic 01J transmission was made out of magnesium alloy; from 2005 it is made out of aluminum.

• Bolts and other components which have direct contact with the transmission have a surface coating which is matched to the transmission housing.

• On a magnesium transmission, bolts must always be replaced on the following bolted connections: Transmission cover on the transmission casing and cover for final drive on transmission casing and the connection of the engine to the transmission.

• Contact corrosion occurs when incorrect components (bolts, nuts, washers, etc.) are used. The transmission housing will be damaged.

• Furthermore, the transmission housing, transmission cover and final drive cover must all be of the same material.

• If you are not sure about the suitability of parts, install new parts.

• We recommend using original replacement parts only. They have been inspected and are compatible with magnesium.

• It is recommended to use Audi accessories.

• Damage resulting from contact corrosion is not covered by the warranty.