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This video shows you how to jump start a dead battery in your 2009 Mercedes-Benz C300. If you get into your C300, turn the key, and your car doesn't start (you may hear nothing or a clicking sound from the engine bay), you have a dead battery and need a jump-start. Check to see if you left your headlights or an interior light on and turn the switch off. Assuming that you have a pair of jumper cables, a pair of safety glasses and a friend to give you a jumpstart, the video above will show you where to connect the cables (and in what order!) for your C300. Once you are finished reviving a dead car battery in your C300, make sure you drive it for at least 5 minutes before turning it off so your battery isn't dead the next time.
So what's up with the safety glasses? There is a small possibility of a battery exploding during the charging process if you don't connect the cables properly (causing a spark) and there is a bunch of hydrogen gas around the battery (car batteries emit hydrogen gas when they discharge) - this is much more of an issue with cars that haven't been driven for a long time than if you drive your C300 regularly and simply forgot to turn your lights off.
If your battery has green or white cruddy deposits, it is probably not getting enough juice from and will likely wear out sooner2009 Mercedes-Benz C300 Sport 3.0L V6
The best way to fix leaking hoses is to replace them, but if you don't have time, a stop leak product might work for you2009 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
Cars burn, leak and otherwise dispense of their oil. Check your level frequently and top up when necessary2009 Mercedes-Benz C300 Sport 3.0L V6
White light when you back up - yup, they burn out and you can replace them with bright LEDs2009 Mercedes-Benz C300 Sport 3.0L V6
See how to seal up minor power steering fluid leaks2009 Mercedes-Benz C300 Sport 3.0L V6