Why does the check engine light in my SL450 turn on when I start my car?

It's okay if your check engine light comes on when you first start your vehicle. This is just your SL450 testing its circuits. The dash light shouldn't stay on. If it does, you might want to bring your vehicle in for service.

Are Mercedes-Benz SL450 engine noises bad?

Strange engine sounds can be a sign something’s off in your Mercedes-Benz SL450. Knocking or tapping could be a symptom of low oil. Whistling sounds could mean you have an intake leak or misaligned belt. Squealing can indicate 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 SL450 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 pushing 'the pedal to the metal' before the engine has warmed up. 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 SL450 radiator?

While it’s not recommended, you can use water in your SL450 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.

Why did my SL450 engine suddenly stop?

If your SL450 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 SL450 engine?

Your local Firestone Complete Auto Care has you covered with expert SL450 engine repair. Schedule an appointment today and see us at one of our thousands of locations.

2018 Mercedes-Benz SL450 Engine Repair

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2018 Mercedes-Benz SL450 Trim Options

Select your Mercedes-Benz SL450 trim level to learn more about Mercedes-Benz-recommended engine repair. Even Mercedes-Benz SL450 parts will get older and change.

V6/3.0L

Mercedes-Benz SL450 Repairs and Services

Nothing stays the same forever. Even your Mercedes-Benz SL450’s engine parts and components will change. We’re here to help when something stops working. Select a service or repair below to learn more about what we can do for your 2018 Mercedes-Benz SL450.

We Care for Mercedes-Benz SL450 Engines

Mercedes-Benz SL450 drivers trust that their SL450 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. When they do, you might find yourself searching for 2018 Mercedes-Benz SL450 engine repair or replacement parts. 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 SL450 engine will be in good hands. If you think something’s wrong with your engine, schedule an appointment at your convenience. After all, Firestone Complete Auto Care is one of the most popular picks for professional engine repairs thanks to its service and affordability.

Illuminated Check Engine Light on 2018 Mercedes-Benz SL450

An illuminated check engine light on your Mercedes-Benz SL450 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 fuel injection, Potential causes may include a faulty oxygen sensor, worn spark plug, a clogged catalytic converter, or a leaking engine vacuum, to name a few possible causes. Stop by your local Firestone Complete Auto Care to get your SL450 issues diagnosed and we'll determine exactly why your check engine light is on. Other signs it's time for Mercedes-Benz SL450 engine service might include burning smells, or engine misfiring.

Engine Repairs for Your 2018 SL450

When your Mercedes-Benz SL450 engine needs repairs, our technicians will make sure you understand what’s going on before they start working on your engine. We don't start working until we have your approval. If a service can wait, we’ll make sure you know. But if immediate repairs are necessary for your safety, we’ll make sure that's clear, too. We want to provide you with the information you need to make an informed engine repair decision. Choose Firestone Complete Auto Care for Mercedes-Benz SL450 engine repairs and you can drive easy knowing that we use Mercedes-Benz-approved parts and fluids — serpentine belt, oil gasket, ignition coil, or other parts.

Questions About 2018 Mercedes-Benz SL450 Engines

Why does the check engine light in my SL450 turn on when I start my car? It's okay if your check engine light comes on when you first start your vehicle. This is just your SL450 testing its circuits. The dash light shouldn't stay on. If it does, you might want to bring your vehicle in for service.
Are Mercedes-Benz SL450 engine noises bad? Strange engine sounds can be a sign something’s off in your Mercedes-Benz SL450. Knocking or tapping could be a symptom of low oil. Whistling sounds could mean you have an intake leak or misaligned belt. Squealing can indicate 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 SL450 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 pushing 'the pedal to the metal' before the engine has warmed up. 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 SL450 radiator? While it’s not recommended, you can use water in your SL450 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.
Why did my SL450 engine suddenly stop? If your SL450 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 SL450 engine? Your local Firestone Complete Auto Care has you covered with expert SL450 engine repair. Schedule an appointment today and see us at one of our thousands of locations.