Contact Corrosion
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.
Contact corrosion can occur if inappropriate fasteners (bolts, nuts, washers, rivets, plugs, grommets, adhesives etc.) are used.
For this reason, the manufacturer only installs fasteners with a special surface coating. Also, rubber and plastic parts and adhesive consist of materials that do not conduct electricity. These parts, which have been tested and are aluminum compatible, are also available as replacement parts.
Note:
- Always install new parts if there is any doubt as to whether parts can be reused.
- Original equipment replacement parts are recommended. They have been tested and are compatible with aluminum.
- Audi accessories are recommended.
- Contact corrosion damage is not covered under warranty.