Contact Corrosion

WARNING: This page is about a different car, the 2014 Audi A5, 2013 Audi A5, 2012 Audi A5, and 2011 Audi A5. However, it is still accessible from the selected car via links, so may be relevant.

General:

Contact corrosion can occur if non-approved fasteners are used on vehicle (bolts, nuts, washers, etc.).
For this reason, only fasteners with a special surface coating may be installed.
In addition, rubber or plastic parts and adhesive are made of non-conductive materials.
If there are doubts about whether parts can be used or not, use new parts. Refer to the parts information.

NOTE:

We recommend only using original replacement parts. They have been inspected and are compatible with magnesium.
The use of Audi accessories is recommended.
Contact corrosion damage is not covered under warranty.