Aluminum bolts -2 through 10- Usage
WARNING: This page is about a different car, the 2018 Audi A6, 2017 Audi A6, and 2016 Audi A6. However, it is still accessible from the selected car via links, so may be relevant.
The aluminum bolts -2 through 10- can be used twice. Therefore, the bolts must be marked with two notches "X" made by a chisel after they have be used the first time -arrow-.
To prevent damaging the bolts when marking them, do not clamp them in a vise. Insert the bolt using a 14 mm socket with a 1 /2 drive, which is inserted in to the vise, as illustrated.
Bolts marked with an "X" may not be used again.