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The video above shows you how to replace the battery in your 2009 Mercedes-Benz C300. We recommend changing the battery in Mercedes-Benzs 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 C300 that you need to replace.
Replacing the battery in your C300 involves removing the terminals. When you reconnect the terminals, your radio presets are likely to be cleared out. In some C300s, 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 Mercedes-Benz and they will give you the code for free. In many Mercedes-Benzs, 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.
Replacing a dirty air filter can improve gas mileage by up to 4%. Isn't efficiency great?2009 Mercedes-Benz C300 Sport 3.0L V6
Small bulbs that burn out regularly - did you know you can replace these with LED lights?2009 Mercedes-Benz C300 Sport 3.0L V6
Do you ever get into your friend's car and notice a bad smell? A dirty cabin air filter could be the culprit2009 Mercedes-Benz C300 Sport 3.0L V6
Learn how to diagnose and fix minor oil leaks in your car2009 Mercedes-Benz C300 Sport 3.0L V6
A few key tips will make jacking up your car much safer2009 Mercedes-Benz C300 Sport 3.0L V6
If your blinker doesn't blink, or blinks rapidly, you likely have a burnt out bulb2009 Mercedes-Benz C300 Sport 3.0L V6