Why does the check engine light come on when I start my SL550?

It’s usually normal for your check engine light to turn on upon ignition. This is just your SL550 testing 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 SL550. 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 my Mercedes-Benz SL550 engine?

Certain driving habits can damage your engine and should be avoided. These habits include 'running on fumes,' revving the engine while still in Park, or accelerating too quickly, too soon. Protect your engine’s performance and efficiency by distancing yourself from these habits.

Is it okay to put water in my Mercedes-Benz SL550 radiator?

While it’s not recommended, you can use water in your SL550 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 SL550 engine to suddenly stop?

If your SL550 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 SL550 engine?

For Mercedes-Benz SL550 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.

Engine Repairs for Your 2014 Mercedes-Benz SL550

Learn about

2014 Mercedes-Benz SL550 Trim Options

Select your Mercedes-Benz SL550 trim level to learn more about Mercedes-Benz-recommended engine repair. Even Mercedes-Benz SL550 parts will get older and change.

V8/4.7L

Mercedes-Benz SL550 Repairs and Services

Nothing lasts forever. Even your Mercedes-Benz SL550’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 2014 Mercedes-Benz SL550 services.

We Know Mercedes-Benz SL550 Engines

Mercedes-Benz SL550 drivers trust that their SL550 will take them near and far. That might be why you bought it in the first place. However, even your trustworthy engine is subject to wear and tear. Things can go sideways sometimes. If the unexpected strikes, you may search the internet frantically for quick and affordable 2014 Mercedes-Benz SL550 engine repairs. That’s where Firestone Complete Auto Care comes in. We've serviced more than 500 million vehicles since 1926, and our technicians know Mercedes-Benz SL550 engines. Schedule a courtesy inspection at the first sign of engine trouble. Firestone Complete Auto Care offers both trustworthy and affordable engine repairs.

My 2014 Mercedes-Benz SL550 Check Engine Light Is On

An illuminated check engine light on your Mercedes-Benz SL550 is one of the first signs it's time to 'brake' for engine service. A check engine light that’s on or flashing could be a symptom of a serious problem in your or emission system, and it won’t go away by ignoring it. Causes may include a faulty oxygen sensor, worn spark plug, issues with your catalytic converter, or a leak in the engine vacuum, to name a few possible causes. Stop by your local Firestone Complete Auto Care to get your SL550 issues diagnosed and we’ll figure out why that check engine light is giving you grief. engine rattling, oil leaks, or misfiring.

2014 SL550 Engine Services

If your 2014 SL550 engine needs repairs, our technicians will provide you with a thorough explanation beforehand. We make recommendations, but you make the final decision. If a repair isn’t urgent right now, 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 2014 SL550 engine repairs and you can drive easy knowing that we use Mercedes-Benz-approved parts and fluids — timing belt, motor oil seal, fuses, or other parts.

Engine Q&A 2014 Mercedes-Benz SL550

Why does the check engine light come on when I start my SL550? It’s usually normal for your check engine light to turn on upon ignition. This is just your SL550 testing 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 SL550. 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 my Mercedes-Benz SL550 engine? Certain driving habits can damage your engine and should be avoided. These habits include 'running on fumes,' revving the engine while still in Park, or accelerating too quickly, too soon. Protect your engine’s performance and efficiency by distancing yourself from these habits.
Is it okay to put water in my Mercedes-Benz SL550 radiator? While it’s not recommended, you can use water in your SL550 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 SL550 engine to suddenly stop? If your SL550 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 SL550 engine? For Mercedes-Benz SL550 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.