Why does the check engine light come on when I start my C300?

Generally, your check engine light turning on upon ignition is not a bad thing. This is just your C300 testing its circuits. The light should turn off in a bit, but come see us if it doesn't.

Are Mercedes-Benz C300 engine noises bad?

Strange under-the-hood noises can point to problems within your Mercedes-Benz C300 engine. Knocking or tapping could be a symptom of low oil. Whistling could mean a belt is misaligned or there's an intake leak. Squealing may be caused by a loose fan belt, and grinding might be a sign of brake problems rather than engine issues.

What could damage a Mercedes-Benz engine? [ordered-list-1-item-3-1]Are you unknowingly damaging your Mercedes-Benz C300 engine?

Some driving habits are not so great for your engine. These include driving on a near-empty gas tank, revving your engine while the vehicle is in Park, or pushing 'the pedal to the metal' before the engine has warmed up. Steer clear of these habits to help protect engine performance and efficiency.

Can I add water to my Mercedes-Benz C300 radiator?

Only in emergencies. A 50/50 mix of coolant and water (or a pre-mixed) coolant is recommended. However, if you must keep driving when you're out of coolant, it's better to drive with water in your coolant reservoir than nothing.

What can cause a C300 engine to suddenly stop?

There are different reasons your C300 vehicle engine could suddenly stop. You may be looking at a lack of fuel, faulty sensors, issues with the ignition system, engine overheating, electrical problems, or mechanical troubles.

Who fixes Mercedes-Benz C300 engines?

Your local Firestone Complete Auto Care offers Mercedes-Benz C300 engine repair. Schedule an appointment today at one of our thousands of locations nationwide!

Reliable Repairs for 2012 Mercedes-Benz C300 Engines

Learn about

2012 Mercedes-Benz C300 Trim Options

Select your Mercedes-Benz C300 trim level to learn more about Mercedes-Benz-recommended engine repair. Use the following chart to find information.

V6/3.0L

2012 Mercedes-Benz C300 Repair

Nothing lasts forever. Even your Mercedes-Benz C300's many parts and pieces. When something breaks, we're ready. Click on a repair below to learn more about 2012 Mercedes-Benz C300 repairs.

We’re Trained to Care for Mercedes-Benz C300 Engines

Mercedes-Benz C300 engines are known for their reliability. You may have even been thinking about that when you bought it. However, even your trustworthy engine is subject to wear and tear. Things can go sideways sometimes. When they do, you might find yourself searching for 2012 Mercedes-Benz C300 engine repair or replacement parts. That’s where Firestone Complete Auto Care comes in. We've serviced more than 500 million vehicles since 1926, and our technicians know Mercedes-Benz C300 engines. Schedule an appointment if you're experiencing problems that could require engine repair. Firestone Complete Auto Care offers both trustworthy and affordable engine repairs.

My 2012 Mercedes-Benz C300 Check Engine Light Is On

If your C300 check engine light is on, it’s time to get it looked at. A steady or flashing check engine light could signal a serious issue with your or emission control system that won’t go away on its own. Possible causes can include a failing oxygen sensor, worn spark plug, a problem with your catalytic converter, or an engine vacuum leak, but that's only a few of the possible causes. Bring your C300 to Firestone Complete Auto Care to get computerized diagnostics and our expert techs will get the root of the problem. rattling sounds, essential fluid leaks, or engine misfiring.

Mercedes-Benz C300 Engine Repair

If your 2012 Mercedes-Benz C300 needs engine repair, our expert techs will let you know what needs to be done and why before they get started. We never do any work without your sign-off. If a service can wait, we’ll make sure you know. We'll also tell you if it's necessary for your safety. We want to give you all the details you need to make an informed decision about your engine repairs. Choose Firestone Complete Auto Care for Mercedes-Benz C300 engine repairs and you can feel confident knowing that we use Mercedes-Benz-approved parts and components like the timing chain or belt, valve guide seal, sensors, or other parts.

Engine Q&A 2012 Mercedes-Benz C300

Why does the check engine light come on when I start my C300? Generally, your check engine light turning on upon ignition is not a bad thing. This is just your C300 testing its circuits. The light should turn off in a bit, but come see us if it doesn't.
Are Mercedes-Benz C300 engine noises bad? Strange under-the-hood noises can point to problems within your Mercedes-Benz C300 engine. Knocking or tapping could be a symptom of low oil. Whistling could mean a belt is misaligned or there's an intake leak. Squealing may be caused by a loose fan belt, and grinding might be a sign of brake problems rather than engine issues.
What could damage a Mercedes-Benz engine? [ordered-list-1-item-3-1]Are you unknowingly damaging your Mercedes-Benz C300 engine? Some driving habits are not so great for your engine. These include driving on a near-empty gas tank, revving your engine while the vehicle is in Park, or pushing 'the pedal to the metal' before the engine has warmed up. Steer clear of these habits to help protect engine performance and efficiency.
Can I add water to my Mercedes-Benz C300 radiator? Only in emergencies. A 50/50 mix of coolant and water (or a pre-mixed) coolant is recommended. However, if you must keep driving when you're out of coolant, it's better to drive with water in your coolant reservoir than nothing.
What can cause a C300 engine to suddenly stop? There are different reasons your C300 vehicle engine could suddenly stop. You may be looking at a lack of fuel, faulty sensors, issues with the ignition system, engine overheating, electrical problems, or mechanical troubles.
Who fixes Mercedes-Benz C300 engines? Your local Firestone Complete Auto Care offers Mercedes-Benz C300 engine repair. Schedule an appointment today at one of our thousands of locations nationwide!