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The video above shows you how to replace the battery in your 2004 Audi A6. We recommend changing the battery in Audis every 4 years. Although some batteries last much longer, most batteries begin breaking down chemically after four years, so you could experience dimmer headlights and other negative effects before you have a dead battery in your A6 that you need to replace.
Replacing the battery in your A6 involves removing the terminals. When you reconnect the terminals, your radio presets are likely to be cleared out. In some A6s, you may need to re-enter a security code to get your radio to work again. Check for this code in your owners manual - it will usually be either a sticker or small card in the booklet. If you can't find it, call Audi and they will give you the code for free. In many Audis, the transmission "learns" how you drive over time and makes adjustments, so you may experience altered driving dynamics as your car re-learns your driving style after changing the battery.
Unlike a waist belt, these usually become looser as they age! Learn how to check it here2004 Audi A6 3.0L V6
Small bulbs that burn out regularly - did you know you can replace these with LED lights?2004 Audi A6 3.0L V6
On many cars, the high beam bulb runs at reduced power during the day - check 'em and change 'em!2004 Audi A6 3.0L V6
If your car is leaking a small amount of power steering fluid - see this video on how to fix the leak2004 Audi A6 3.0L V6
Flushing the coolant in your car is not that hard and will extend the life of your engine tremendously - learn how here!2004 Audi A6 3.0L V6
The burnt out tail light: classic reason for a cop to pull you over - change yours now2004 Audi A6 3.0L V6