Why does the check engine light come on when I start my S550?

It's okay if your check engine light comes on when you first start your vehicle. This is just your S550 testing its circuits. The dash light shouldn't stay on. If it does, you might want to bring your vehicle in for service.

Why does my Mercedes-Benz engine sound different?

Strange engine sounds can be a sign something’s off in your Mercedes-Benz S550. 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 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 S550 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.

Is it okay to put water in my Mercedes-Benz S550 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 S550 when you’re out of coolant, having water in the coolant reservoir is better than nothing.

Why did my S550 engine suddenly stop?

There are different reasons your S550 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 S550 repair?

Your local Firestone Complete Auto Care has you covered with expert S550 engine repair. Schedule an appointment today and see us at one of our thousands of locations.

2012 Mercedes-Benz S550 Engine Repair

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2012 Mercedes-Benz S550 Trim Options

Select your Mercedes-Benz S550 trim level to learn more about Mercedes-Benz-recommended engine repair. Even Mercedes-Benz S550 parts will get older and change.

V8/4.7L

Mercedes-Benz S550 Repairs and Services

Nothing stays the same forever. Even your Mercedes-Benz S550's many parts and pieces. We’re here to help when something stops working. Select a repair or category to learn more about 2012 Mercedes-Benz S550 services.

We Care for Mercedes-Benz S550 Engines

Mercedes-Benz S550 engines are known for their reliability. 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. If they do, you’ll have to find a dependable 2012 Mercedes-Benz service center — quick! That’s where Firestone Complete Auto Care comes in. Since 1926, we’ve taken care of 500 million+ cars, so you can rest assured knowing your Mercedes-Benz S550 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.

Check Engine Light on 2012 Mercedes-Benz S550

As soon as your S550 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, Potential causes may include a faulty oxygen sensor, bad spark plug, issues 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 S550 issues diagnosed and our expert techs will get the root of the problem. Other signs it's time for Mercedes-Benz S550 engine service might include oil leaks, or misfiring.

2012 S550 Engine Services

When your Mercedes-Benz S550 engine needs repairs, our technicians will provide you with a thorough explanation beforehand. We never do any work without your sign-off. If a repair can wait, 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. By choosing Firestone Complete Auto Care for S550 engine repairs and you can drive easy knowing that we use Mercedes-Benz-approved parts and fluids — timing belt, engine oil seal, sensors, or a different component.

Questions About 2012 Mercedes-Benz S550 Engines

Why does the check engine light come on when I start my S550? It's okay if your check engine light comes on when you first start your vehicle. This is just your S550 testing its circuits. The dash light shouldn't stay on. If it does, you might want to bring your vehicle in for service.
Why does my Mercedes-Benz engine sound different? Strange engine sounds can be a sign something’s off in your Mercedes-Benz S550. 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 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 S550 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.
Is it okay to put water in my Mercedes-Benz S550 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 S550 when you’re out of coolant, having water in the coolant reservoir is better than nothing.
Why did my S550 engine suddenly stop? There are different reasons your S550 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 S550 repair? Your local Firestone Complete Auto Care has you covered with expert S550 engine repair. Schedule an appointment today and see us at one of our thousands of locations.