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 Replacement: 2013 Audi A6 Quattro Premium 3.0L V6 Supercharged
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2014 Audi A6 Battery - ACDelco 49AGM
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Battery Replacement: 2011 Audi A6 Quattro 3.0L V6 Supercharged
How to replace the car battery on a Audi S6 - Car Ownership - AutoTrader
New 8th-generation Audi A6 features 48V mild hybrid system as standard - Green Car Congress