Check Engine Light is On: 2009 Mercedes-Benz C300 Sport 3.0L V6

Mercedes-Benz C300 Model Years - 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015

How to diagnose a check engine light with an obd scanner on a Mercedes-Benz C300

Author

Hans Angermeier is an ASE certified Maintenance and Light Repair Technician and has produced over 100,000 videos showing drivers how to fix things on their cars. He has broad expertise on basic repair procedures covering the majority of cars on the road. Over the past 10 years, Hans has been focused on building CarCareKiosk, which is visited by millions of drivers each month.

2009 Mercedes-Benz C300 Sport 3.0L V6 Lights Reverse Light (replace bulb)

White light when you back up - yup, they burn out and you can replace them with bright LEDs

2009 Mercedes-Benz C300 Sport 3.0L V6 Battery Replace

Did you know that heat is worse for your battery than cold? Replace it every 4 years

2009 Mercedes-Benz C300 Sport 3.0L V6 Lights Highbeam (replace bulb)

On many cars, the high beam bulb runs at reduced power during the day - check 'em and change 'em!

2009 Mercedes-Benz C300 Sport 3.0L V6 Air Filter (Engine) Replace

Replacing a dirty air filter can improve gas mileage by up to 4%. Isn't efficiency great?

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Video Description

A check engine light can indicate a broad spectrum of problems with your 2009 Mercedes-Benz C300. If you have a flashing check engine light, turn off the engine immediately to prevent potential motor damage. Whereas a steady check engine light may mean 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 location 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.

Is it OK to drive with a check engine light on? Intermittent Check Engine Light: If the check engine light on your 2009 C300 is not steady, 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 – a blinking check engine light means 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 after finding the C300 OBD port location and scanning the codes; have your C300 diagnosed by a professional automotive technician.

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