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 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 SL550. Tapping or knocking could mean you need an oil change. Whistling sounds could mean you have an intake leak or misaligned belt. Squealing may be caused by a loose fan belt, and grinding might be coming from the brakes, not the engine.

What could damage a Mercedes-Benz engine? [ordered-list-1-item-3-1]Are you unknowingly damaging your Mercedes-Benz SL550 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 slamming the gas pedal while the engine is still cold. Steer clear of these habits to help protect engine performance and efficiency.

Can I add water to 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 repairs Mercedes-Benz SL550 engines?

Your local Firestone Complete Auto Care has you covered with expert SL550 engine repair. Schedule an appointment today and see us at one of our thousands of locations.

2019 Mercedes-Benz SL550 Engine Repair

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2019 Mercedes-Benz SL550 Trim Options

Select your Mercedes-Benz SL550 trim level to learn more about Mercedes-Benz-recommended engine repair. Use the following chart to find information.

V8/4.7L

Repairs for Your 2019 Mercedes-Benz SL550

Nothing stays the same forever. Even your Mercedes-Benz SL550’s engine parts and components will change. We’re here to help when something stops working. Click on a repair below to learn more about 2019 Mercedes-Benz SL550 repairs.

We Care for Mercedes-Benz SL550 Engines

Mercedes-Benz SL550 drivers trust that their SL550 will take them near and far. You may have even been thinking about that when you bought it. Even so, pieces and parts can break down over time. Things can go sideways sometimes. If they do, you’ll have to find a dependable 2019 Mercedes-Benz service center — quick! 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. After all, Firestone Complete Auto Care is one of the most popular picks for professional engine repairs thanks to its service and affordability.

My 2019 Mercedes-Benz SL550 Check Engine Light Is On

If your SL550 check engine light is on, it’s time to get it looked at. A steady or flashing check engine light could signal a serious issue with your or emission system, and it won’t go away by ignoring it. Possible causes can include a failing oxygen sensor, damaged spark plug, a clogged catalytic converter, or an engine vacuum leak, to name a few possible causes. Bring your SL550 in for an on-board diagnostic check and we'll determine exactly why your check engine light is on. Other signs your Mercedes-Benz SL550 engine needs some TLC are oil leaks, or a sinking feeling that something’s wrong.

Engine Repairs for Your 2019 SL550

If your 2019 Mercedes-Benz SL550 needs engine repair, 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 seek to give you all the info you need to make a smart decision about our services. By choosing Firestone Complete Auto Care for SL550 engine repairs and you can feel good knowing that we only use Mercedes-Benz-compliant replacement parts such as the timing belt, motor oil seal, ignition coil, or a different component.

2019 Mercedes-Benz SL550 Engine Q&A

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 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 SL550. Tapping or knocking could mean you need an oil change. Whistling sounds could mean you have an intake leak or misaligned belt. Squealing may be caused by a loose fan belt, and grinding might be coming from the brakes, not the engine.
What could damage a Mercedes-Benz engine? [ordered-list-1-item-3-1]Are you unknowingly damaging your Mercedes-Benz SL550 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 slamming the gas pedal while the engine is still cold. Steer clear of these habits to help protect engine performance and efficiency.
Can I add water to 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 repairs Mercedes-Benz SL550 engines? Your local Firestone Complete Auto Care has you covered with expert SL550 engine repair. Schedule an appointment today and see us at one of our thousands of locations.