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A check engine light can indicate a broad spectrum of problems with your 2009 Mercedes-Benz C300. In some cases you need to pull over immediately to prevent damage while in others you merely need to tighten you gas cap next time you stop in order to reset the service engine soon light. The video above shows how to locate the on board diagnostics (OBD) plug on your 2009 C300, how to read the trouble codes and how to reset or clear the check engine light using a scanner on your C300.
Intermittent Check Engine Light: If the check engine light on your 2009 C300 is intermittent, try to take note of the conditions when this happens. For example, does it happen when you accelerating, driving on the highway or does it appear at low speeds? This will help your mechanic evaluate the issue. Steady Check Engine Light: If your check engine light is on every time you operate your C300, you need to have it checked as soon as possible, especially if you notice performance problems or unusual noises. Flashing Check Engine Light: If your check engine light is flashing, stop driving your C300 and have it towed to your nearest mechanic - you probably have a very serious problem with your car and you risk ruining your engine by driving it. If you are unsure about what your diagnostic trouble codes mean; have your C300 diagnosed by a professional automotive technician.
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
Many cars will burn or leak a little bit of oil. Over time, this adds up and you might need to add some - learn how to here!2009 Mercedes-Benz C300 Sport 3.0L V6
Avoid tickets and accidents with both working headlights! New bulbs are much brighter too2009 Mercedes-Benz C300 Sport 3.0L V6
Carmakers are hiding interior fuse boxes all over the place these days - see how to check your interior fuses here!2009 Mercedes-Benz C300 Sport 3.0L V6
If your car is leaking a small amount of power steering fluid - see this video on how to fix the leak2009 Mercedes-Benz C300 Sport 3.0L V6
Help keep your car as responsive as you are by maintaining proper power steering fluid levels2009 Mercedes-Benz C300 Sport 3.0L V6