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

Generally, your check engine light turning on upon ignition is not a bad thing. It’s just your SL450 firing up its circuits. The light should turn off in a bit, but come see us if it doesn't.

Are Mercedes-Benz SL450 engine noises bad?

Strange engine sounds can be a sign something’s off in your Mercedes-Benz SL450. Tapping or knocking could mean you need an oil change. Whistling sounds could mean you have an intake leak or misaligned belt. Squealing can be traced back to a loose fan belt, and grinding might be coming from the brakes, not the engine.

What could damage my Mercedes-Benz SL450 engine?

Some driving habits are not so great for your engine. These include driving on a near-empty gas tank, 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 put water in my Mercedes-Benz SL450 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 SL450 when you’re out of coolant, having water in the coolant reservoir is better than nothing.

Why did my SL450 engine suddenly stop?

Your SL450 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 SL450 engines?

For Mercedes-Benz SL450 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.

2017 Mercedes-Benz SL450 Engine Repair

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2017 Mercedes-Benz SL450 Trim Options

Select your Mercedes-Benz SL450 trim level to learn more about Mercedes-Benz-recommended engine repair. Use the following chart to find information.

V6/3.0L

2017 Mercedes-Benz SL450 Repair

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. Click on a repair below to learn more about 2017 Mercedes-Benz SL450 repairs.

We’re Trained to Care for Mercedes-Benz SL450 Engines

The Mercedes-Benz SL450 is respected for its reliability. That might be why you bought it in the first place. However, the wear-proof engine has yet to be invented! Sometimes plans go sideways. When they do, you might find yourself searching for 2017 Mercedes-Benz SL450 engine repair or replacement parts. Luckily, you won’t have to look far, since Firestone Complete Auto Care has 1,700+ locations across the country. 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. 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 2017 Mercedes-Benz SL450 Check Engine Light Is On

As soon as your SL450 check engine light turns on, it’s time to get an expert’s opinion. A check engine light that’s flashing or steadily illuminated could point to problems with your vehicle's ignition, Potential causes may include a faulty oxygen sensor, damaged spark plug, a clogged catalytic converter, or a leak in the engine vacuum, to name a few possible causes. Bring your SL450 to Firestone Complete Auto Care to get computerized diagnostics and we’ll figure out why that check engine light is giving you grief. engine pinging noises, essential fluid leaks, or engine misfiring.

2017 SL450 Engine Services

When your Mercedes-Benz SL450 engine needs repairs, our expert techs will let you know what needs to be done and why before they get started. 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 seek to give you all the info you need to make a smart decision about our services. By choosing Firestone Complete Auto Care for SL450 engine repairs and you can drive easy knowing that we use Mercedes-Benz-approved parts and fluids — serpentine belt, motor oil seal, fuses, or a different component.

2017 Mercedes-Benz SL450 Engine Q&A

Why does the check engine light in my SL450 turn on when I start my car? Generally, your check engine light turning on upon ignition is not a bad thing. It’s just your SL450 firing up its circuits. The light should turn off in a bit, but come see us if it doesn't.
Are Mercedes-Benz SL450 engine noises bad? Strange engine sounds can be a sign something’s off in your Mercedes-Benz SL450. Tapping or knocking could mean you need an oil change. Whistling sounds could mean you have an intake leak or misaligned belt. Squealing can be traced back to a loose fan belt, and grinding might be coming from the brakes, not the engine.
What could damage my Mercedes-Benz SL450 engine? Some driving habits are not so great for your engine. These include driving on a near-empty gas tank, 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 put water in my Mercedes-Benz SL450 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 SL450 when you’re out of coolant, having water in the coolant reservoir is better than nothing.
Why did my SL450 engine suddenly stop? Your SL450 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 SL450 engines? For Mercedes-Benz SL450 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.