Why does my C240’s check engine light come on when I start it?

Generally, your check engine light turning on upon ignition is not a bad thing. This is just your C240 testing its circuits. The light should turn off in a bit, but come see us if it doesn't.

Why does my Mercedes-Benz engine sound different?

Strange engine sounds can be a sign something’s off in your Mercedes-Benz C240. Knocking or tapping could be a symptom of low oil. Whistling could mean a belt is misaligned or there's an intake leak. Squealing can be traced back to 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 C240 engine?

Certain driving habits can damage your engine and should be avoided. These habits include 'running on fumes,' flooring the gas pedal while the car is in Park, or pushing 'the pedal to the metal' before the engine has warmed up. Help sustain your engine’s performance and efficiency by staying miles away from these bad driving practices.

Can I add water to my Mercedes-Benz C240 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 the engine in my C240 to suddenly stop?

There are different reasons your C240 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.

Where can I go for Mercedes-Benz C240 repair?

Your local Firestone Complete Auto Care has you covered with expert C240 engine repair. Schedule an appointment today and see us at one of our thousands of locations.

Engine Repairs for Your 2004 Mercedes-Benz C240

Learn about

2004 Mercedes-Benz C240 Trim Options

Select your Mercedes-Benz C240 trim level to learn more about Mercedes-Benz-recommended engine repair. Use the following chart to find information.

V6/2.6L

Mercedes-Benz C240 Repairs and Services

Stuff wears out. Even your Mercedes-Benz C240's many parts and pieces. We’re here to help when something stops working. Click on a repair below to learn more about 2004 Mercedes-Benz C240 repairs.

We Care for Mercedes-Benz C240 Engines

Mercedes-Benz C240 drivers trust that their C240 will take them near and far. That might be why you bought it in the first place. Even so, pieces and parts can break down over time. Sometimes plans go sideways. When they do, you might find yourself searching for 2004 Mercedes-Benz C240 engine repair or replacement parts. Luckily, you won’t have to look far, since Firestone Complete Auto Care has 1,700+ locations across the country. We've serviced more than 500 million vehicles since 1926, and our technicians know Mercedes-Benz C240 engines. Schedule a courtesy inspection at the first sign of engine trouble. After all, Firestone Complete Auto Care is one of the most popular picks for professional engine repairs thanks to its service and affordability.

My 2004 Mercedes-Benz C240 Check Engine Light Is On

As soon as your C240 check engine light turns on, it’s time to get an expert’s opinion. A steady or flashing check engine light could signal a serious issue with your fuel, Possible causes can include a failing oxygen sensor, worn spark plug, issues with your catalytic converter, or a leak in the engine vacuum, to name a few potential sources. Stop by your local Firestone Complete Auto Care to get your C240 issues diagnosed and our expert techs will get the root of the problem. engine rattling, essential fluid leaks, or engine misfiring.

2004 C240 Engine Services

If your 2004 Mercedes-Benz C240 needs engine repair, our technicians will provide you with a thorough explanation beforehand. We don't start working until we have your approval. If a repair can wait, we'll let you know. If it's necessary for your safety, we'll make sure you understand that, too. We want to give you all the details you need to make an informed decision about your engine repairs. Turn to Firestone Complete Auto Care for your 2004 C240 engine repairs and you can feel good knowing that we only use Mercedes-Benz-compliant replacement parts such as the timing belt, oil gasket, fuses, or other parts.

2004 Mercedes-Benz C240 Engine Q&A

Why does my C240’s check engine light come on when I start it? Generally, your check engine light turning on upon ignition is not a bad thing. This is just your C240 testing its circuits. The light should turn off in a bit, but come see us if it doesn't.
Why does my Mercedes-Benz engine sound different? Strange engine sounds can be a sign something’s off in your Mercedes-Benz C240. Knocking or tapping could be a symptom of low oil. Whistling could mean a belt is misaligned or there's an intake leak. Squealing can be traced back to 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 C240 engine? Certain driving habits can damage your engine and should be avoided. These habits include 'running on fumes,' flooring the gas pedal while the car is in Park, or pushing 'the pedal to the metal' before the engine has warmed up. Help sustain your engine’s performance and efficiency by staying miles away from these bad driving practices.
Can I add water to my Mercedes-Benz C240 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 the engine in my C240 to suddenly stop? There are different reasons your C240 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.
Where can I go for Mercedes-Benz C240 repair? Your local Firestone Complete Auto Care has you covered with expert C240 engine repair. Schedule an appointment today and see us at one of our thousands of locations.