MX: Audi A6 C6 2008 Battery drain after using mmi for +-1 hr - AudiWorld Forums
Flat Battery - Amp Problem? | Audi-Sport.net
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Audi A6 C6 (2006): Battery Lamp stayed on, ESP came on a few miles later, so I thought it was actually not charging, finished my drive home (7 miles total), checked voltage,
Battery drain issue, dealers are unable to fix - AudiWorld Forums