Line Routing And Securing

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2018 Audi S8, 2018 Audi A8 Quattro, 2017 Audi S8, 2017 Audi A8 Quattro, and 2016 Audi S8. However, it is still accessible from the selected car via links, so may be relevant.

Mark the individual fuel, hydraulic and vacuum lines, EVAP system as well as the wires before removing them. This will prevent interchanging them and will ensure the original installation position. Draw sketches or take pictures of them if required.
Due to the limited space inside the engine compartment, allow sufficient clearance to all moving or hot parts to avoid damaging the lines.