Why does my CLS400’s check engine light come on when I start it?

It's okay if your check engine light comes on when you first start your vehicle. It’s just your CLS400 firing up its circuits. The light should go off shortly. Bring your vehicle in if it doesn't.

Why is my Mercedes-Benz CLS400 making engine noise?

Unusual noises can signal a problem with your Mercedes-Benz CLS400 engine. Tapping or knocking could mean you need an oil change. A high-pitched whistle could signal an intake leak or misaligned belt. Squealing can be traced back to a loose fan belt, and grinding could be a sign that something is wrong with your brakes — not the engine.

What could damage a Mercedes-Benz engine? [ordered-list-1-item-3-1]Are you unknowingly damaging your Mercedes-Benz CLS400 engine?

Certain driving habits can hurt your engine. These habits include driving on an empty fuel 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 use water in my Mercedes-Benz CLS400 radiator?

An emergency is the only time you should consider putting water in your radiator. Outside of that, it’s recommended you use a pre-mixed coolant or a 50/50 blend of water and coolant. However, if you need to continue driving your CLS400 when you’re out of coolant, having water in the coolant reservoir is better than nothing.

What can cause a CLS400 engine to suddenly stop?

There are different reasons your CLS400 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 CLS400 repair?

Your local Firestone Complete Auto Care fixes Mercedes-Benz CLS400 engines. Book an appointment today! We have thousands of locations across the country.

2017 Mercedes-Benz CLS400 Engine Repair

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2017 Mercedes-Benz CLS400 Trim Options

Select your Mercedes-Benz CLS400 trim level to learn more about Mercedes-Benz-recommended engine repair. Use the following chart to find information.

Mercedes-Benz CLS400 Repairs and Services

Nothing stays the same forever. Even your Mercedes-Benz CLS400's many parts and pieces. When something breaks, we're ready. Click on a repair below to learn more about 2017 Mercedes-Benz CLS400 repairs.

We Care for Mercedes-Benz CLS400 Engines

Mercedes-Benz CLS400 drivers trust that their CLS400 will take them near and far. You probably thought about that when you got it. However, the wear-proof engine has yet to be invented! Things can go sideways sometimes. If they do, you’ll have to find a dependable 2017 Mercedes-Benz service center — quick! That’s where Firestone Complete Auto Care comes in. We've serviced millions of vehicles since 1926, and our professional technicians are trained to service Mercedes-Benz CLS400 engines. Schedule an appointment if you're experiencing problems that could require engine repair. After all, Firestone Complete Auto Care is one of the most popular picks for professional engine repairs thanks to its service and affordability.

Illuminated Check Engine Light on 2017 Mercedes-Benz CLS400

As soon as your CLS400 check engine light turns on, it’s time to get an expert’s opinion. A check engine light that’s on or flashing could be a symptom of a serious problem in your car’s ignition, Causes may include a faulty oxygen sensor, bad spark plug, a problem with your catalytic converter, or an engine vacuum leak, to name a few possible causes. Stop by your local Firestone Complete Auto Care to get your CLS400 issues diagnosed and we'll determine exactly why your check engine light is on. rattling sounds, oil leaks, or engine misfiring.

Mercedes-Benz CLS400 Engine Repair

When your Mercedes-Benz CLS400 engine needs repairs, our expert techs will let you know what needs to be done and why before they get started. We don't start working until we have your approval. If a repair isn’t urgent right now, we’ll let 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 CLS400 engine repairs and you can drive easy knowing that we use Mercedes-Benz-approved parts and fluids — cambelt, valve guide seal, sensors, or other parts.

2017 Mercedes-Benz CLS400 Engine Q&A

Why does my CLS400’s check engine light come on when I start it? It's okay if your check engine light comes on when you first start your vehicle. It’s just your CLS400 firing up its circuits. The light should go off shortly. Bring your vehicle in if it doesn't.
Why is my Mercedes-Benz CLS400 making engine noise? Unusual noises can signal a problem with your Mercedes-Benz CLS400 engine. Tapping or knocking could mean you need an oil change. A high-pitched whistle could signal an intake leak or misaligned belt. Squealing can be traced back to a loose fan belt, and grinding could be a sign that something is wrong with your brakes — not the engine.
What could damage a Mercedes-Benz engine? [ordered-list-1-item-3-1]Are you unknowingly damaging your Mercedes-Benz CLS400 engine? Certain driving habits can hurt your engine. These habits include driving on an empty fuel 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 use water in my Mercedes-Benz CLS400 radiator? An emergency is the only time you should consider putting water in your radiator. Outside of that, it’s recommended you use a pre-mixed coolant or a 50/50 blend of water and coolant. However, if you need to continue driving your CLS400 when you’re out of coolant, having water in the coolant reservoir is better than nothing.
What can cause a CLS400 engine to suddenly stop? There are different reasons your CLS400 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 CLS400 repair? Your local Firestone Complete Auto Care fixes Mercedes-Benz CLS400 engines. Book an appointment today! We have thousands of locations across the country.