The screw connection for the towline anchorage is located behind a cover cap on the right side of the front bumper.
Take the towline anchorage out of the Audi A8's tool kit.
To detach the cover cap, firmly and briefly press the top left side of the cap inwards to release it Fig. 1.
Screw the towline anchorage into the screw connection as far as it will go Fig. 2 and tighten it with the box spanner.
Put the towline anchorage back in the tool kit after use.
WARNING!
If the towline anchorage is not screwed in as far as the stop, there is a risk of the screw connection shearing off during towing - risk of accident!