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

Generally, your check engine light turning on upon ignition is not a bad thing. This is just your SL550 testing its circuits. The light should turn off in a bit, but come see us if it doesn't.

Why is my Mercedes-Benz SL550 making engine noise?

Strange under-the-hood noises can point to problems within your Mercedes-Benz SL550 engine. Knocking or tapping could be a symptom of low oil. Whistling sounds could mean you have an intake leak or misaligned belt. Squealing may be caused by 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 hurt your engine. These habits include driving on an empty fuel tank, revving the engine while still 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.

Is it okay to put water in my Mercedes-Benz SL550 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 SL550 when you’re out of coolant, having water in the coolant reservoir is better than nothing.

What could cause my SL550 engine to suddenly stop?

Your SL550 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 SL550 engines?

Your local Firestone Complete Auto Care fixes Mercedes-Benz SL550 engines. Book an appointment today! We have thousands of locations across the country.

Engine Repairs for Your 2017 Mercedes-Benz SL550

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2017 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

2017 Mercedes-Benz SL550 Repair

Stuff wears out. Even your Mercedes-Benz SL550’s engine parts and components will change. When something breaks, we're ready. Select a repair or category to learn more about 2017 Mercedes-Benz SL550 services.

We Care for Mercedes-Benz SL550 Engines

The Mercedes-Benz SL550 is respected for its reliability. That might be why you bought it in the first place. However, even your trustworthy engine is subject to wear and tear. Sometimes plans go sideways. If they do, you’ll have to find a dependable 2017 Mercedes-Benz service center — quick! That’s where Firestone Complete Auto Care comes in. We've serviced millions of vehicles since 1926, and our professional technicians are trained to service Mercedes-Benz SL550 engines. If you think something’s wrong with your engine, schedule an appointment at your convenience. Firestone Complete Auto Care offers both trustworthy and affordable engine repairs.

Illuminated Check Engine Light on 2017 Mercedes-Benz SL550

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 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, bad spark plug, issues with your catalytic converter, or a leaking engine vacuum, to name a few potential sources. Stop by your local Firestone Complete Auto Care to get your SL550 issues diagnosed and our expert techs will get the root of the problem. engine pinging noises, oil leaks, or a sinking feeling that something’s wrong.

Engine Repairs for Your 2017 SL550

If your 2017 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 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. Turn to Firestone Complete Auto Care for your 2017 SL550 engine repairs and you can feel confident knowing that we use Mercedes-Benz-approved parts and components like the serpentine belt, valve guide seal, ignition coil, or other parts.

Questions About 2017 Mercedes-Benz SL550 Engines

Why does the check engine light come on when I start my SL550? Generally, your check engine light turning on upon ignition is not a bad thing. This is just your SL550 testing its circuits. The light should turn off in a bit, but come see us if it doesn't.
Why is my Mercedes-Benz SL550 making engine noise? Strange under-the-hood noises can point to problems within your Mercedes-Benz SL550 engine. Knocking or tapping could be a symptom of low oil. Whistling sounds could mean you have an intake leak or misaligned belt. Squealing may be caused by 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 hurt your engine. These habits include driving on an empty fuel tank, revving the engine while still 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.
Is it okay to put water in my Mercedes-Benz SL550 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 SL550 when you’re out of coolant, having water in the coolant reservoir is better than nothing.
What could cause my SL550 engine to suddenly stop? Your SL550 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 SL550 engines? Your local Firestone Complete Auto Care fixes Mercedes-Benz SL550 engines. Book an appointment today! We have thousands of locations across the country.