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

It’s usually normal for your check engine light to turn on upon ignition. This is just your CLS400 testing its circuits. The light should turn off in a bit, but come see us if it doesn't.

Are Mercedes-Benz CLS400 engine noises bad?

Strange under-the-hood noises can point to problems within your Mercedes-Benz CLS400 engine. Knocking or tapping could be a symptom of low oil. Whistling sounds could mean you have an intake leak or misaligned belt. Squealing can be traced back to a loose fan belt, and grinding might be coming from the brakes, not the engine.

What could damage my Mercedes-Benz CLS400 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. Protect your engine’s performance and efficiency by distancing yourself from these habits.

Can I put water in my Mercedes-Benz CLS400 radiator?

While it’s not recommended, you can use water in your CLS400 radiator in emergencies. Normally, you should only use a 50/50 mix of coolant and water or a pre-mixed coolant. However, if you are completely out of coolant and must continue driving, it’s better to have water in your coolant reservoir than nothing.

What can cause a CLS400 engine to suddenly stop?

Your CLS400 car engine could stop suddenly due to low fuel, electrical issues, overheating, a faulty ignition system, mechanical troubles, or sensor problems.

Who repairs Mercedes-Benz CLS400 engines?

For Mercedes-Benz CLS400 engine repair, trust your local Firestone Complete Auto Care. You can make an appointment today at any of our thousands of locations across the U.S.

Reliable Repairs for 2016 Mercedes-Benz CLS400 Engines

Learn about

2016 Mercedes-Benz CLS400 Trim Options

Select your Mercedes-Benz CLS400 trim level to learn more about Mercedes-Benz-recommended engine repair. Even Mercedes-Benz CLS400 parts will get older and change.

V6/3.0L

V6/3.5L

2016 Mercedes-Benz CLS400 Repair

Nothing lasts forever. Even your Mercedes-Benz CLS400's many parts and pieces. When something breaks, we're ready. Select a repair or category to learn more about 2016 Mercedes-Benz CLS400 services.

We’re Trained to Care for Mercedes-Benz CLS400 Engines

Mercedes-Benz CLS400 engines are known for their reliability. You probably thought about that when you got it. Even so, pieces and parts can break down over time. Things can go sideways sometimes. When they do, you might find yourself searching for 2016 Mercedes-Benz CLS400 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. Since 1926, we’ve taken care of 500 million+ cars, so you can rest assured knowing your Mercedes-Benz CLS400 engine will be in good hands. 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.

Illuminated Check Engine Light on 2016 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, Potential causes may include a faulty oxygen sensor, damaged spark plug, a clogged catalytic converter, or an engine vacuum leak, but that's only a few of the possible causes. Stop by your local Firestone Complete Auto Care to get your CLS400 issues diagnosed and our expert techs will get the root of the problem. engine rattling, burning smells, or engine misfiring.

Mercedes-Benz CLS400 Engine Repair

If your 2016 CLS400 engine needs repairs, our technicians will provide you with a thorough explanation beforehand. 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 provide you with the information you need to make an informed engine repair decision. Turn to Firestone Complete Auto Care for your 2016 CLS400 engine repairs and you can feel good knowing that we only use Mercedes-Benz-compliant replacement parts such as the timing belt, valve guide seal, sensors, or other parts.

Engine Q&A 2016 Mercedes-Benz CLS400

Why does my CLS400’s check engine light come on when I start it? It’s usually normal for your check engine light to turn on upon ignition. This is just your CLS400 testing its circuits. The light should turn off in a bit, but come see us if it doesn't.
Are Mercedes-Benz CLS400 engine noises bad? Strange under-the-hood noises can point to problems within your Mercedes-Benz CLS400 engine. Knocking or tapping could be a symptom of low oil. Whistling sounds could mean you have an intake leak or misaligned belt. Squealing can be traced back to a loose fan belt, and grinding might be coming from the brakes, not the engine.
What could damage my Mercedes-Benz CLS400 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. Protect your engine’s performance and efficiency by distancing yourself from these habits.
Can I put water in my Mercedes-Benz CLS400 radiator? While it’s not recommended, you can use water in your CLS400 radiator in emergencies. Normally, you should only use a 50/50 mix of coolant and water or a pre-mixed coolant. However, if you are completely out of coolant and must continue driving, it’s better to have water in your coolant reservoir than nothing.
What can cause a CLS400 engine to suddenly stop? Your CLS400 car engine could stop suddenly due to low fuel, electrical issues, overheating, a faulty ignition system, mechanical troubles, or sensor problems.
Who repairs Mercedes-Benz CLS400 engines? For Mercedes-Benz CLS400 engine repair, trust your local Firestone Complete Auto Care. You can make an appointment today at any of our thousands of locations across the U.S.