Safety Precautions When Working On Ignition System
WARNING: This page is about a different car, the 2021 Audi RS 7 Sportback. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:
Risk of injury due to electrocution
The ignition system is under high voltage when the engine is running. It is possible to be electrocuted by touching the ignition system.
-- Never touch or remove the ignition wires when the engine is running or at cranking speed.