The 2018 Audi A8 is a mild-hybrid technology vehicle, with a belt alternator starter (BAS) and a lithium-ion battery.
The best place to start when performing diagnostics on sensors is the wiring diagram. This video is sponsored by Mitchell 1.
The latest SUN collision Information software features wiring diagrams that connect directly to component information.
The Hippocratic Oath states a doctor shall “do no harm.” The technician’s oath is the same, but we “do no harm” to a vehicle we are trying to diagnose or repair.
Instructor Dave Hobbs talks about voltage drop testing issues where the circuit you’re testing doesn’t really have the current flow going through it like it should. It may not be due to the fact you have a big voltage drop from a large resistance source in the wiring or the connections. It could be a couple of problems. It could be the wiring and connections, in addition to a component that’s either inoperative or not drawing enough current as it normally would. In this tip clip we talk about these things and some alternative ‘MacGyver like’ load testing techniques you can try.