Contact Corrosion
WARNING: This page is about a different car, the 2011 Audi Q7, 2010 Audi Q7, and 2009 Audi Q7. However, it is still accessible from the selected car via links, so may be relevant.
Contact corrosion can occur if incorrect fasteners (bolts, nuts, washers, etc.) are used.
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 there are doubts about whether parts can be used or not, then use new parts.
NOTE:
Only original replacement parts are recommended, they are checked and compatible with aluminum.
It is recommended to use Audi accessories.
Damage resulting from contact corrosion is not covered by the warranty.