Why does my S450’s check engine light come on when I start it?

It’s usually normal for your check engine light to turn on upon ignition. It’s just your S450 firing up its circuits. The light should go off shortly. Bring your vehicle in if it doesn't.

Are Mercedes-Benz S450 engine noises bad?

Strange under-the-hood noises can point to problems within your Mercedes-Benz S450 engine. Tapping or knocking could mean you're low on oil. 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 S450 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 use water in my Mercedes-Benz S450 radiator?

Only in emergencies. A 50/50 mix of coolant and water (or a pre-mixed) coolant is recommended. However, if you must keep driving when you're out of coolant, it's better to drive with water in your coolant reservoir than nothing.

What can cause a S450 engine to suddenly stop?

Reasons your S450 car engine may suddenly stop include engine overheating, electrical troubles, mechanical issues, ignition system problems, faulty sensors, and low fuel.

Where can I go for Mercedes-Benz S450 repair?

For Mercedes-Benz S450 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.

Reliable Repairs for 2018 Mercedes-Benz S450 Engines

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2018 Mercedes-Benz S450 Trim Options

Select your Mercedes-Benz S450 trim level to learn more about Mercedes-Benz-recommended engine repair. Use the following chart to find information.

Repairs for Your 2018 Mercedes-Benz S450

Stuff wears out. Even your Mercedes-Benz S450’s engine parts and components will change. We’re here to help when something stops working. Select a repair or category to learn more about 2018 Mercedes-Benz S450 services.

We Know Mercedes-Benz S450 Engines

Mercedes-Benz S450 drivers trust that their S450 will take them near and far. That might be why you bought it in the first place. Even so, pieces and parts can break down over time. Things can go wrong on the road. If they do, you’ll have to find a dependable 2018 Mercedes-Benz service center — quick! That's when it's time to head to Firestone Complete Auto Care. We've serviced more than 500 million vehicles since 1926, and our technicians know Mercedes-Benz S450 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.

Illuminated Check Engine Light on 2018 Mercedes-Benz S450

If your S450 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 fuel, Causes may include a faulty oxygen sensor, bad spark plug, a clogged catalytic converter, or a leaking engine vacuum, to name a few potential sources. Bring your S450 to Firestone Complete Auto Care to get computerized diagnostics and we'll determine exactly why your check engine light is on. engine pinging noises, oil leaks, or engine misfiring.

Engine Repairs for Your 2018 S450

If your 2018 Mercedes-Benz S450 needs engine repair, our technicians will provide you with a thorough explanation beforehand. We make recommendations, but you make the final decision. If a repair can wait, we'll let you know. We'll also tell you if it's necessary for your safety. We want to give you all the details you need to make an informed decision about your engine repairs. By choosing Firestone Complete Auto Care for S450 engine repairs and you can feel good knowing that we only use Mercedes-Benz-compliant replacement parts such as the timing chain or belt, motor oil seal, ignition coil, or another part.

Engine Q&A 2018 Mercedes-Benz S450

Why does my S450’s check engine light come on when I start it? It’s usually normal for your check engine light to turn on upon ignition. It’s just your S450 firing up its circuits. The light should go off shortly. Bring your vehicle in if it doesn't.
Are Mercedes-Benz S450 engine noises bad? Strange under-the-hood noises can point to problems within your Mercedes-Benz S450 engine. Tapping or knocking could mean you're low on oil. 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 S450 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 use water in my Mercedes-Benz S450 radiator? Only in emergencies. A 50/50 mix of coolant and water (or a pre-mixed) coolant is recommended. However, if you must keep driving when you're out of coolant, it's better to drive with water in your coolant reservoir than nothing.
What can cause a S450 engine to suddenly stop? Reasons your S450 car engine may suddenly stop include engine overheating, electrical troubles, mechanical issues, ignition system problems, faulty sensors, and low fuel.
Where can I go for Mercedes-Benz S450 repair? For Mercedes-Benz S450 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.