What you should/must know about Audi Electrical System

A8 D3 energy (power) management control unit

Audi electrical system is very sophisticated especially with A8 D3. This is how I understand the system. The electrical system in general includes Alternator, Battery, Power Management System, ECM (Engine Control Module).  

How To Replace Honda Odyssey Alternator

I replaced a rebuilt alternator for my father in-law’s 97 Honda Odyssey 2 years ago and now it’s dead again, with the engine running, measure across the battery terminal, only 11.90 V registered, it should be over 14V. He got another rebuilt one, life time warranty, but he never keeps the receipt any way. The