I’ve just acquired a 2014 Audi A5 Cabriolet Premium Plus with Navigation and sport package. From 2008-2017 it’s B8. I’m listing all the things we need to know about our A5 B8 (I think it’s the same for coupe also). : I left the interior lights on for 2 days and the battery went down …
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).
The battery has been great for 11 years, it doesn’t seem to hold charge any more. I had an incident of battery failure yesterday after parking the car for about 20 minutes, the car wouldn’t crank and all indicators on the dash was flashing while I tried to start the car. The battery definitely had …
