Why does the check engine light in my ML550 turn on when I start my car?

It’s usually normal for your check engine light to turn on upon ignition. It’s just your ML550 firing up its circuits. The light should go off shortly. Bring your vehicle in 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 ML550. Tapping or knocking could mean you need an oil change. Whistling could mean a belt is misaligned or there's an intake leak. Squealing can indicate a loose fan belt, and grinding might be coming from the brakes, not the engine.

What could damage my Mercedes-Benz ML550 engine?

Certain driving habits can damage your engine and should be avoided. These habits include 'running on fumes,' revving your engine while the vehicle is in Park, or accelerating too quickly, too soon. Help sustain your engine’s performance and efficiency by staying miles away from these bad driving practices.

Can I use water in my Mercedes-Benz ML550 radiator?

While it’s not recommended, you can use water in your ML550 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 the engine in my ML550 to suddenly stop?

If your ML550 car engine suddenly stops, it could be due to overheating, low fuel, a faulty ignition system, sensor problems, electrical system trouble, or mechanical issues.

Who can repair my Mercedes-Benz ML550 engine?

Your local Firestone Complete Auto Care has you covered with expert ML550 engine repair. Schedule an appointment today and see us at one of our thousands of locations.

Engine Repairs for Your 2012 Mercedes-Benz ML550

Learn about

2012 Mercedes-Benz ML550 Trim Options

Select your Mercedes-Benz ML550 trim level to learn more about Mercedes-Benz-recommended engine repair. Use the following chart to find information.

V8/4.7L

2012 Mercedes-Benz ML550 Repair

Nothing lasts forever. Even your Mercedes-Benz ML550’s engine parts and components will change. When something breaks or fails, we’re ready to help. Select a repair or category to learn more about 2012 Mercedes-Benz ML550 services.

We’re Trained to Care for Mercedes-Benz ML550 Engines

Mercedes-Benz ML550 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. Things can go sideways sometimes. If the unexpected strikes, you may search the internet frantically for quick and affordable 2012 Mercedes-Benz ML550 engine repairs. 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 ML550 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 ML550

An illuminated check engine light on your Mercedes-Benz ML550 is one of the first signs it's time to 'brake' for engine service. A steady or flashing check engine light could signal a serious issue with your car’s ignition, Possible causes can include a failing oxygen sensor, bad spark plug, a problem with your catalytic converter, or a leak in the engine vacuum, to name a few potential sources. Bring your ML550 in for an on-board diagnostic check and we'll determine exactly why your check engine light is on. rattling sounds, oil leaks, or misfiring.

Mercedes-Benz ML550 Engine Repair

When your Mercedes-Benz ML550 engine needs repairs, our technicians will make sure you understand what’s going on before they start working on your engine. We make recommendations, but you make the final decision. If a service can wait, we’ll make sure 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. Choose Firestone Complete Auto Care for Mercedes-Benz ML550 engine repairs and you can feel confident knowing that we use Mercedes-Benz-approved parts and components like the cambelt, engine oil seal, ignition coil, or a different component.

Questions About 2012 Mercedes-Benz ML550 Engines

Why does the check engine light in my ML550 turn on when I start my car? It’s usually normal for your check engine light to turn on upon ignition. It’s just your ML550 firing up its circuits. The light should go off shortly. Bring your vehicle in 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 ML550. Tapping or knocking could mean you need an oil change. Whistling could mean a belt is misaligned or there's an intake leak. Squealing can indicate a loose fan belt, and grinding might be coming from the brakes, not the engine.
What could damage my Mercedes-Benz ML550 engine? Certain driving habits can damage your engine and should be avoided. These habits include 'running on fumes,' revving your engine while the vehicle is in Park, or accelerating too quickly, too soon. Help sustain your engine’s performance and efficiency by staying miles away from these bad driving practices.
Can I use water in my Mercedes-Benz ML550 radiator? While it’s not recommended, you can use water in your ML550 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 the engine in my ML550 to suddenly stop? If your ML550 car engine suddenly stops, it could be due to overheating, low fuel, a faulty ignition system, sensor problems, electrical system trouble, or mechanical issues.
Who can repair my Mercedes-Benz ML550 engine? Your local Firestone Complete Auto Care has you covered with expert ML550 engine repair. Schedule an appointment today and see us at one of our thousands of locations.